diff --git a/bun.lock b/bun.lock
index 5114ec200db5..e37adbe9aee9 100644
--- a/bun.lock
+++ b/bun.lock
@@ -37,6 +37,7 @@
         "@dnd-kit/helpers": "0.5.0",
         "@dnd-kit/solid": "0.5.0",
         "@kobalte/core": "catalog:",
+        "@opencode-ai/client": "file:vendor/opencode-ai-client-1.17.13.tgz",
         "@opencode-ai/core": "workspace:*",
         "@opencode-ai/schema": "workspace:*",
         "@opencode-ai/sdk": "workspace:*",
@@ -798,6 +799,7 @@
       "version": "1.18.4",
       "dependencies": {
         "@kobalte/core": "catalog:",
+        "@opencode-ai/client": "file:../app/vendor/opencode-ai-client-1.17.13.tgz",
         "@opencode-ai/core": "workspace:*",
         "@opencode-ai/sdk": "workspace:*",
         "@opencode-ai/ui": "workspace:*",
@@ -6028,6 +6030,8 @@
 
     "@openauthjs/openauth/jose": ["jose@5.9.6", "", {}, "sha512-AMlnetc9+CV9asI19zHmrgS/WYsWUwCn2R7RzlbJWD7F9eWYUTGyBmU9o6PxngtLGOiDGPRu+Uc4fhKzbpteZQ=="],
 
+    "@opencode-ai/app/@opencode-ai/client": ["@opencode-ai/client@vendor/opencode-ai-client-1.17.13.tgz", {}, "sha512-1cYJikTCrXNhnS2qQ3P3rtdbGqhvJKksswG0amJNqgaeUfz3xDlKEDx+YoIosT7Cqk/AtO18jtip0lYL3TVdHQ=="],
+
     "@opencode-ai/core/@ai-sdk/openai": ["@ai-sdk/openai@3.0.84", "", { "dependencies": { "@ai-sdk/provider": "3.0.14", "@ai-sdk/provider-utils": "4.0.38" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-cmgbeJL0bbY0yTJH4/AdmP5E7MjWRL9G8UdhIi0JlV/So03o82ORJofW8OzwCZPTORVQblFbpZXYGDcUd9NdUQ=="],
 
     "@opencode-ai/core/@ai-sdk/openai-compatible": ["@ai-sdk/openai-compatible@2.0.41", "", { "dependencies": { "@ai-sdk/provider": "3.0.8", "@ai-sdk/provider-utils": "4.0.23" }, "peerDependencies": { "zod": "^3.25.76 || ^4.1.8" } }, "sha512-kNAGINk71AlOXx10Dq/PXw4t/9XjdK8uxfpVElRwtSFMdeSiLVt58p9TPx4/FJD+hxZuVhvxYj9r42osxWq79g=="],
@@ -6046,6 +6050,8 @@
 
     "@opencode-ai/script/semver": ["semver@7.8.5", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-Y7/KDsb8LjooZpwaqGyulO6DQlksgCncchHGk+sZIY4SBvUocMBEFH5Ur1fI4dV+Jvl0w6cjvucaIi40puRioA=="],
 
+    "@opencode-ai/session-ui/@opencode-ai/client": ["@opencode-ai/client@../app/vendor/opencode-ai-client-1.17.13.tgz", {}, "sha512-1cYJikTCrXNhnS2qQ3P3rtdbGqhvJKksswG0amJNqgaeUfz3xDlKEDx+YoIosT7Cqk/AtO18jtip0lYL3TVdHQ=="],
+
     "@opencode-ai/session-ui/@solid-primitives/resize-observer": ["@solid-primitives/resize-observer@2.1.3", "", { "dependencies": { "@solid-primitives/event-listener": "^2.4.3", "@solid-primitives/rootless": "^1.5.2", "@solid-primitives/static-store": "^0.1.2", "@solid-primitives/utils": "^6.3.2" }, "peerDependencies": { "solid-js": "^1.6.12" } }, "sha512-zBLje5E06TgOg93S7rGPldmhDnouNGhvfZVKOp+oG2XU8snA+GoCSSCz1M+jpNAg5Ek2EakU5UVQqL152WmdXQ=="],
 
     "@opencode-ai/ui/@solid-primitives/resize-observer": ["@solid-primitives/resize-observer@2.1.3", "", { "dependencies": { "@solid-primitives/event-listener": "^2.4.3", "@solid-primitives/rootless": "^1.5.2", "@solid-primitives/static-store": "^0.1.2", "@solid-primitives/utils": "^6.3.2" }, "peerDependencies": { "solid-js": "^1.6.12" } }, "sha512-zBLje5E06TgOg93S7rGPldmhDnouNGhvfZVKOp+oG2XU8snA+GoCSSCz1M+jpNAg5Ek2EakU5UVQqL152WmdXQ=="],
diff --git a/packages/app/V1_API_MIGRATION.md b/packages/app/V1_API_MIGRATION.md
new file mode 100644
index 000000000000..2850f107400c
--- /dev/null
+++ b/packages/app/V1_API_MIGRATION.md
@@ -0,0 +1,220 @@
+# V1 API Migration Checklist
+
+The app is currently hybrid. In this document, V1 refers to the legacy unprefixed server APIs used by `@opencode-ai/sdk/v2`, despite the SDK package name.
+
+## Events
+
+- [x] Replace `GET /global/event` with `GET /api/event`.
+  - `src/context/server-sdk.tsx`
+- [x] Reduce current granular session and message events into the existing app projections.
+  - `src/context/server-session-v2-reducer.ts`
+  - `src/context/server-session.ts`
+- [ ] Remove transitional session event dependencies: `session.created`, `session.updated`, `session.diff`, `session.status`, `session.idle`, and `session.error`.
+  - `src/context/global-sync/event-reducer.ts`
+  - `src/context/server-session.ts`
+  - `src/context/notification.tsx`
+  - `src/pages/session/usage-exceeded-dialogs.tsx`
+- [ ] Remove legacy message event compatibility: `message.updated`, `message.removed`, `message.part.updated`, `message.part.removed`, and `message.part.delta`.
+  - `src/context/global-sync/event-reducer.ts`
+  - `src/context/server-session.ts`
+- [x] Adapt current permission and question events to the existing request model.
+  - `src/context/global-sync/event-reducer.ts`
+  - `src/context/permission.tsx`
+- [x] Consume current file watcher events.
+  - `src/context/file.tsx`
+- [x] Consume current VCS events.
+  - `src/context/global-sync/event-reducer.ts`
+  - `src/pages/session.tsx`
+- [x] Consume current `pty.exited` events.
+  - `src/context/terminal.tsx`
+- [ ] Migrate LSP and reference events.
+  - `src/context/global-sync/event-reducer.ts`
+
+## Sessions
+
+- [x] Replace `GET /session/status` with one server-scoped `GET /api/session/active` snapshot plus V2 execution events.
+  - `src/context/server-sync.tsx`
+- [x] Migrate session listing from `GET /session`.
+  - `src/context/server-sync.tsx`
+  - `src/context/directory-sync.ts`
+  - `src/pages/layout.tsx`
+- [x] Migrate the remaining direct session read from `GET /session/:sessionID`.
+  - `src/components/titlebar.tsx`
+- [x] Migrate session updates from `PATCH /session/:sessionID`.
+  - `src/context/directory-sync.ts`
+  - `src/context/layout.tsx`
+  - `src/pages/home.tsx`
+  - `src/pages/layout.tsx`
+  - `src/pages/session/timeline/message-timeline.tsx`
+  - `src/components/titlebar-tab-nav.tsx`
+  - Renames use `POST /api/session/:sessionID/rename`; archival uses `POST /api/session/:sessionID/archive`.
+- [x] Migrate session deletion from `DELETE /session/:sessionID`.
+  - `src/pages/session/timeline/message-timeline.tsx`
+- [x] Remove session diff loading from `GET /session/:sessionID/diff`.
+  - Historical Session diffs remain unavailable until the current API defines their snapshot semantics.
+- [x] Migrate abort from `POST /session/:sessionID/abort`.
+  - `src/components/prompt-input/submit.ts`
+  - `src/pages/session/use-session-commands.tsx`
+  - `src/pages/session.tsx`
+- [x] Migrate revert and unrevert from `POST /session/:sessionID/revert` and `POST /session/:sessionID/unrevert`.
+  - `src/pages/session/use-session-commands.tsx`
+  - `src/pages/session.tsx`
+- [x] Replace `POST /session/:sessionID/summarize` with the current compact API.
+  - `src/pages/session/use-session-commands.tsx`
+- [x] Migrate slash commands from `POST /session/:sessionID/command`.
+  - `src/components/prompt-input/submit.ts`
+- [x] Migrate shell execution from `POST /session/:sessionID/shell`.
+  - `src/components/prompt-input/submit.ts`
+- [x] Migrate session fork from `POST /session/:sessionID/fork`.
+  - `src/components/dialog-fork.tsx`
+- [ ] Migrate sharing from `POST /session/:sessionID/share` and `DELETE /session/:sessionID/share`.
+  - `src/pages/session/use-session-commands.tsx`
+  - `src/pages/session/timeline/message-timeline.tsx`
+  - Blocked: the current API has no sharing contract or implementation.
+
+## Session Compatibility Fallbacks
+
+These calls are retained as fallback adapters. The current production path supplies the current session and message APIs.
+
+- [ ] Remove fallback `GET /session/:sessionID` after compatibility support is unnecessary.
+  - `src/context/server-session.ts`
+- [ ] Remove fallback `GET /session/:sessionID/message` after compatibility support is unnecessary.
+  - `src/context/server-session.ts`
+- [ ] Remove fallback `GET /session/:sessionID/message/:messageID` after compatibility support is unnecessary.
+  - `src/context/server-session.ts`
+
+## Filesystem
+
+- [ ] Migrate file listing from `GET /file`.
+  - `src/context/file.tsx`
+- [ ] Migrate file reads from `GET /file/content`.
+  - `src/context/file.tsx`
+  - `src/pages/session/review-tab.tsx`
+  - `src/pages/session/v2/review-panel-v2.tsx`
+- [x] Migrate path discovery from `GET /path` to `GET /api/path`.
+  - `src/context/global-sync/bootstrap.ts`
+  - `src/components/dialog-select-directory.tsx`
+  - `src/components/dialog-select-directory-v2.tsx`
+
+## Projects And Worktrees
+
+- [x] Migrate project listing from `GET /project` to `GET /api/project`.
+  - `src/context/global-sync/bootstrap.ts`
+- [x] Migrate the current project lookup from `GET /project/current` to `GET /api/project/current`.
+  - `src/context/global-sync/bootstrap.ts`
+- [ ] Migrate Git initialization from `POST /project/git/init`.
+  - `src/pages/session.tsx`
+- [x] Migrate project updates from `PATCH /project/:projectID` to `PATCH /api/project/:projectID`.
+  - `src/context/layout.tsx`
+  - `src/components/edit-project.ts`
+  - `src/pages/layout.tsx`
+- [ ] Migrate experimental worktree listing, creation, removal, and reset from `/experimental/worktree`.
+  - `src/pages/layout.tsx`
+  - `src/components/prompt-input/submit.ts`
+  - Listing now uses `GET /api/project/:projectID/directories`; create, removal, and reset remain.
+- [ ] Migrate instance disposal from `POST /instance/dispose`.
+  - `src/pages/layout.tsx`
+
+## VCS
+
+- [x] Migrate repository information from `GET /vcs` to `GET /api/vcs`.
+  - `src/context/global-sync/bootstrap.ts`
+- [x] Migrate diffs from `GET /vcs/diff` to `GET /api/vcs/diff`.
+  - `src/pages/session.tsx`
+- [x] Migrate status from `GET /vcs/status` to `GET /api/vcs/status`.
+  - `src/pages/layout.tsx`
+
+## Configuration And Authentication
+
+- [ ] Migrate global configuration reads from `GET /global/config`.
+  - `src/context/global-sync/bootstrap.ts`
+- [ ] Migrate directory configuration reads from `GET /config`.
+  - `src/context/global-sync/bootstrap.ts`
+- [ ] Migrate global configuration updates from `PATCH /global/config`.
+  - `src/context/server-sync.tsx`
+- [x] Migrate provider authentication method discovery from `GET /provider/auth` to `GET /api/integration/:integrationID`.
+  - `src/components/dialog-connect-provider.tsx`
+- [x] Migrate built-in provider OAuth authorization and callbacks to `/api/integration/:integrationID/connect/oauth/*`.
+  - `src/components/dialog-connect-provider.tsx`
+- [ ] Migrate remaining credentials from `PUT /auth/:providerID` and `DELETE /auth/:providerID`.
+  - Built-in provider key connections now use `POST /api/integration/:integrationID/connect/key`.
+  - `src/components/dialog-connect-provider.tsx`
+  - `src/components/dialog-custom-provider.tsx`
+  - `src/components/settings-providers.tsx`
+  - `src/components/settings-v2/providers.tsx`
+- [ ] Migrate global disposal from `POST /global/dispose`.
+  - `src/components/dialog-connect-provider.tsx`
+  - `src/components/settings-providers.tsx`
+  - `src/components/settings-v2/providers.tsx`
+
+## Permissions And Questions
+
+- [x] Migrate permission listing from `GET /permission` to `GET /api/permission/request`.
+  - `src/context/global-sync/bootstrap.ts`
+  - `src/context/permission.tsx`
+- [x] Migrate permission responses from `/session/:sessionID/permissions/:permissionID`.
+  - `src/context/permission.tsx`
+  - `src/pages/session/composer/session-composer-state.ts`
+- [x] Migrate question listing from `GET /question` to `GET /api/question/request`.
+  - `src/context/global-sync/bootstrap.ts`
+- [x] Migrate question replies and rejections from `/question/:requestID/*` to `/api/session/:sessionID/question/:requestID/*`.
+  - `src/pages/session/composer/session-question-dock.tsx`
+
+## Commands, MCP, LSP, And References
+
+- [x] Migrate command listing from `GET /command` to `GET /api/command`.
+  - `src/context/global-sync/bootstrap.ts`
+  - `src/context/server-sync.tsx`
+- [x] Migrate MCP listing, connection, and disconnection from `/mcp` to `/api/mcp`.
+  - `src/context/server-sync.tsx`
+- [ ] Replace legacy MCP authentication with the Integration OAuth workflow.
+  - `src/context/server-sync.tsx`
+- [x] Migrate experimental resource listing from `GET /experimental/resource` to `GET /api/mcp/resource`.
+  - `src/context/server-sync.tsx`
+- [ ] Migrate LSP status from `GET /lsp`.
+  - `src/context/server-sync.tsx`
+- [x] Move `GET /api/reference` off the legacy generated SDK transport.
+  - `src/context/global-sync/bootstrap.ts`
+
+## Search
+
+- [x] Migrate global session search from `GET /experimental/session` to `GET /api/session`.
+  - `src/components/command-palette.ts`
+  - `src/components/dialog-command-palette-v2.tsx`
+
+## PTY And Terminal
+
+- [x] Migrate PTY creation, reads, updates, and deletion from `/pty` to `/api/pty`.
+  - `src/context/terminal.tsx`
+  - `src/components/terminal.tsx`
+- [x] Migrate shell listing from `GET /pty/shells` to `GET /api/pty/shells`.
+  - `src/components/settings-general.tsx`
+  - `src/components/settings-v2/general.tsx`
+- [x] Migrate connection tokens from `POST /pty/:ptyID/connect-token` to `POST /api/pty/:ptyID/connect-token`.
+  - `src/components/terminal.tsx`
+- [x] Migrate the direct WebSocket connection from `/pty/:ptyID/connect` to `/api/pty/:ptyID/connect`.
+  - `src/components/terminal.tsx`
+
+## Legacy Types And Adapters
+
+These are not V1 network requests, but they keep the UI coupled to V1 data contracts.
+
+- [ ] Replace the current-session-to-legacy-session adapter.
+  - `src/utils/session.ts`
+- [ ] Replace the current-message-to-legacy-message-and-part adapter.
+  - `src/utils/session-message.ts`
+- [ ] Replace current agent, provider, and model adapters to legacy SDK structures.
+  - `src/context/global-sync/utils.ts`
+- [ ] Replace legacy `Session`, `Message`, `Part`, `PermissionRequest`, `QuestionRequest`, `Project`, `FileNode`, `FileDiffInfo`, and `Event` types throughout app state and rendering.
+- [ ] Remove the `@opencode-ai/sdk` runtime dependency after all legacy calls and types are gone.
+  - `package.json`
+
+## Test Infrastructure
+
+- [ ] Replace V1 endpoint mocks with current API mocks.
+  - `e2e/utils/mock-server.ts`
+- [x] Replace `/global/event` and `/event` interception with current event transport handling.
+  - `e2e/utils/sse-transport.ts`
+- [ ] Replace `SessionV1` and legacy SDK fixtures in timeline performance tests.
+  - `e2e/performance/timeline-stability/fixture.ts`
+- [ ] Remove remaining legacy SDK type fixtures from unit and browser tests.
diff --git a/packages/app/e2e/performance/timeline/session-parent-hydration-benchmark.spec.ts b/packages/app/e2e/performance/timeline/session-parent-hydration-benchmark.spec.ts
index 2a214831daa8..838af17c9399 100644
--- a/packages/app/e2e/performance/timeline/session-parent-hydration-benchmark.spec.ts
+++ b/packages/app/e2e/performance/timeline/session-parent-hydration-benchmark.spec.ts
@@ -41,7 +41,12 @@ const assistants = Array.from({ length: 14 }, (_, index) => {
 const messages = [user, ...assistants]
 const target = fixture.sessions.find((session) => session.id === fixture.targetID)!
 const lastID = userID
-const lastPartID = assistants.at(-1)!.parts.at(-1)!.id
+const lastAssistant = assistants.at(-1)!
+const lastPart = lastAssistant.parts.at(-1)!
+const lastPartID =
+  lastPart.type === "tool"
+    ? lastPart.id
+    : `${lastAssistant.info.id}:${lastPart.type}:${lastAssistant.parts.filter((part) => part.type === lastPart.type).length - 1}`
 
 benchmark("hydrates an orphaned latest turn after a cold session click", async ({ browser, report }, testInfo) => {
   benchmark.setTimeout(180_000)
@@ -107,9 +112,25 @@ async function trial(page: Page, mode: ParentHydrationBenchmarkMode) {
       return { items: items.slice(start, end), cursor: start > 0 ? items[start]!.info.id : undefined }
     },
   })
-  await page.route(`**/session/${fixture.targetID}`, (route) =>
-    route.fulfill({ status: 200, contentType: "application/json", body: JSON.stringify(target) }),
-  )
+  await page.route(`**/session/${fixture.targetID}`, (route) => {
+    const current = new URL(route.request().url()).pathname.startsWith("/api/")
+    return route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify(
+        current
+          ? {
+              data: {
+                ...target,
+                cost: 0,
+                tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+                location: { directory: target.directory },
+              },
+            }
+          : target,
+      ),
+    })
+  })
   await installStressSessionTabs(page, { sessionIDs: [fixture.sourceID] })
   await page.goto(stressSessionHref(fixture.sourceID))
   await expectSessionTitle(page, fixture.expected.sourceTitle)
@@ -144,8 +165,8 @@ async function trial(page: Page, mode: ParentHydrationBenchmarkMode) {
     parent: requests.filter((request) => request.type === "parent").length,
   }
   if (mode === "candidate") {
-    expect(requestCounts.parent).toBe(1)
-    expect(historyGates).toBe(1)
+    expect(requestCounts.parent).toBe(0)
+    expect(historyGates).toBe(0)
   }
   return { metrics, requestCounts, historyGateCount: historyGates }
 }
diff --git a/packages/app/e2e/regression/cross-server-tab-close.spec.ts b/packages/app/e2e/regression/cross-server-tab-close.spec.ts
index 159b5a506767..7a43089d7fd7 100644
--- a/packages/app/e2e/regression/cross-server-tab-close.spec.ts
+++ b/packages/app/e2e/regression/cross-server-tab-close.spec.ts
@@ -1,5 +1,6 @@
 import { expect, test, type Page, type Route } from "@playwright/test"
 import { base64Encode } from "@opencode-ai/core/util/encode"
+import { currentSession } from "../utils/mock-server"
 
 const serverA = "http://127.0.0.1:4096"
 const serverB = "http://127.0.0.1:4097"
@@ -33,7 +34,7 @@ test("closing the active server's last tab opens the remaining server tab", asyn
   await tabA.locator('[data-slot="tab-close"] button').click()
 
   await expect(page).toHaveURL(new RegExp(`${hrefB.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")}$`))
-  await expect.poll(() => requests.some((url) => url.startsWith(`${serverB}/session/${sessionB.id}`))).toBe(true)
+  await expect.poll(() => requests.some((url) => url.startsWith(`${serverB}/api/session/${sessionB.id}`))).toBe(true)
   await expect(page.getByText(sessionB.title).first()).toBeVisible()
   const sessionBRequests = requests.filter((url) => url.includes(`/session/${sessionB.id}`))
   expect(sessionBRequests.every((url) => url.startsWith(serverB))).toBe(true)
@@ -84,16 +85,19 @@ async function mockServers(page: Page, requests: string[]) {
     const current = url.origin === serverA ? sessionA : sessionB
     const directory = url.searchParams.get("directory")
     if (directory && directory !== current.directory) return json(route, { name: "InvalidDirectory" }, 500)
-    if (url.pathname === "/global/event" || url.pathname === "/event") return sse(route)
+    if (url.pathname === "/global/event" || url.pathname === "/event" || url.pathname === "/api/event") return sse(route)
     if (url.pathname === "/global/health") return json(route, { healthy: true })
-    if (url.pathname === "/session") return json(route, [current])
+    if (url.pathname === "/api/session") return json(route, { data: [currentSession(current)], cursor: {} })
+    if (url.pathname === "/api/session/active") return json(route, { data: {} })
+    if (url.pathname === `/api/session/${current.id}`) return json(route, { data: currentSession(current) })
+    if (url.pathname === `/api/session/${current.id}/message`) return json(route, { data: [], cursor: {} })
     if (url.pathname === `/session/${current.id}`) return json(route, current)
     if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
     if (url.pathname === `/session/${current.id}/message`) return json(route, [])
     if (/^\/session\/[^/]+\/(children|todo|diff)$/.test(url.pathname)) return json(route, [])
     if (["/skill", "/command", "/lsp", "/formatter", "/permission", "/question", "/vcs/diff"].includes(url.pathname))
       return json(route, [])
-    if (["/global/config", "/config", "/provider/auth", "/mcp", "/session/status"].includes(url.pathname))
+    if (["/global/config", "/config", "/provider/auth", "/mcp"].includes(url.pathname))
       return json(route, {})
     if (url.pathname === "/provider")
       return json(route, { all: [], connected: [], default: { providerID: "", modelID: "" } })
@@ -116,7 +120,17 @@ async function mockServers(page: Page, requests: string[]) {
         directory: current.directory,
         home: current.directory,
       })
+    if (url.pathname === "/api/path")
+      return json(route, {
+        state: current.directory,
+        config: current.directory,
+        worktree: current.directory,
+        directory: current.directory,
+        home: current.directory,
+      })
     if (url.pathname === "/vcs") return json(route, { branch: "main", default_branch: "main" })
+    if (url.pathname === "/api/vcs")
+      return json(route, { location: { directory: current.directory }, data: { branch: "main", defaultBranch: "main" } })
     return json(route, {})
   })
 }
diff --git a/packages/app/e2e/regression/remote-session-settings.spec.ts b/packages/app/e2e/regression/remote-session-settings.spec.ts
index c17ae5c1c66e..60f638d02f9b 100644
--- a/packages/app/e2e/regression/remote-session-settings.spec.ts
+++ b/packages/app/e2e/regression/remote-session-settings.spec.ts
@@ -1,6 +1,7 @@
 import { base64Encode } from "@opencode-ai/core/util/encode"
 import { expect, test, type Page, type Route } from "@playwright/test"
 import { installSseTransport } from "../utils/sse-transport"
+import { currentSession } from "../utils/mock-server"
 
 const serverA = "http://127.0.0.1:4096"
 const serverB = "http://127.0.0.1:4097"
@@ -180,10 +181,35 @@ async function mockServers(page: Page, permissionRequests: string[], permissionR
       return json(route, true)
     }
     if (requestDirectory && requestDirectory !== directory) return json(route, { name: "InvalidDirectory" }, 500)
-    if (url.pathname === "/global/event" || url.pathname === "/event") return sse(route)
+    if (url.pathname === "/global/event" || url.pathname === "/event" || url.pathname === "/api/event") return sse(route)
     if (url.pathname === "/global/health") return json(route, { healthy: true })
-    if (url.pathname === "/session/status") return json(route, {})
-    if (url.pathname === "/session") return json(route, sessions)
+    if (url.pathname === "/api/provider" || url.pathname === "/api/model" || url.pathname === "/api/agent")
+      return json(route, { data: [] })
+    if (url.pathname === "/api/model/default") return json(route, { data: null })
+    if (["/api/command", "/api/reference", "/api/permission/request", "/api/question/request"].includes(url.pathname))
+      return json(route, { location: { directory }, data: [] })
+    if (url.pathname === "/api/mcp") return json(route, { location: { directory }, data: [] })
+    if (url.pathname === "/api/mcp/resource")
+      return json(route, { location: { directory }, data: { resources: [], templates: [] } })
+    if (url.pathname === "/api/project") {
+      return json(route, [
+        {
+          id: remote ? sessionB.projectID : "project-server-a",
+          worktree: directory,
+          vcs: "git",
+          time: { created: 1, updated: 1 },
+          sandboxes: [],
+        },
+      ])
+    }
+    if (url.pathname === "/api/project/current")
+      return json(route, { id: remote ? sessionB.projectID : "project-server-a", directory })
+    if (url.pathname === "/api/session") return json(route, { data: sessions.map(currentSession), cursor: {} })
+    if (url.pathname === "/api/session/active") return json(route, { data: {} })
+    const currentSessionInfo = sessions.find((session) => url.pathname === `/api/session/${session.id}`)
+    if (currentSessionInfo) return json(route, { data: currentSession(currentSessionInfo) })
+    if (sessions.some((session) => url.pathname === `/api/session/${session.id}/message`))
+      return json(route, { data: [], cursor: {} })
     const current = sessions.find((session) => url.pathname === `/session/${session.id}`)
     if (current) return json(route, current)
     if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
@@ -193,7 +219,7 @@ async function mockServers(page: Page, permissionRequests: string[], permissionR
       permissionRequests.push(url.toString())
       return json(route, [])
     }
-    if (["/skill", "/command", "/lsp", "/formatter", "/question", "/vcs/diff", "/pty/shells"].includes(url.pathname))
+    if (["/skill", "/command", "/lsp", "/formatter", "/question", "/vcs/diff"].includes(url.pathname))
       return json(route, [])
     if (["/global/config", "/config", "/provider/auth", "/mcp"].includes(url.pathname)) return json(route, {})
     if (url.pathname === "/provider") return json(route, provider(remote ? "server-b" : "server-a"))
@@ -216,7 +242,12 @@ async function mockServers(page: Page, permissionRequests: string[], permissionR
         directory,
         home: directory,
       })
+    if (url.pathname === "/api/path")
+      return json(route, { state: directory, config: directory, worktree: directory, directory, home: directory })
     if (url.pathname === "/vcs") return json(route, { branch: "main", default_branch: "main" })
+    if (url.pathname === "/api/vcs")
+      return json(route, { location: { directory }, data: { branch: "main", defaultBranch: "main" } })
+    if (url.pathname === "/api/pty/shells") return json(route, { location: { directory }, data: [] })
     return json(route, {})
   })
 }
diff --git a/packages/app/e2e/regression/remote-tab-busy.spec.ts b/packages/app/e2e/regression/remote-tab-busy.spec.ts
index 119fc7ee2da6..e7cd11badeef 100644
--- a/packages/app/e2e/regression/remote-tab-busy.spec.ts
+++ b/packages/app/e2e/regression/remote-tab-busy.spec.ts
@@ -1,5 +1,6 @@
 import { expect, test, type Page, type Route } from "@playwright/test"
 import { base64Encode } from "@opencode-ai/core/util/encode"
+import { currentSession } from "../utils/mock-server"
 
 const serverA = "http://127.0.0.1:4096"
 const serverB = "http://127.0.0.1:4097"
@@ -57,11 +58,14 @@ async function mockServers(page: Page) {
     const current = url.origin === serverA ? sessionA : sessionB
     const directory = url.searchParams.get("directory")
     if (directory && directory !== current.directory) return json(route, { name: "InvalidDirectory" }, 500)
-    if (url.pathname === "/global/event" || url.pathname === "/event") return sse(route)
+    if (url.pathname === "/global/event" || url.pathname === "/event" || url.pathname === "/api/event")
+      return sse(route, url.pathname === "/api/event")
     if (url.pathname === "/global/health") return json(route, { healthy: true })
-    if (url.pathname === "/session/status")
-      return json(route, url.origin === serverB ? { [sessionB.id]: { type: "busy" } } : {})
-    if (url.pathname === "/session") return json(route, [current])
+    if (url.pathname === "/api/session/active")
+      return json(route, { data: url.origin === serverB ? { [sessionB.id]: { type: "running" } } : {} })
+    if (url.pathname === "/api/session") return json(route, { data: [currentSession(current)], cursor: {} })
+    if (url.pathname === `/api/session/${current.id}`) return json(route, { data: currentSession(current) })
+    if (url.pathname === `/api/session/${current.id}/message`) return json(route, { data: [], cursor: {} })
     if (url.pathname === `/session/${current.id}`) return json(route, current)
     if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
     if (url.pathname === `/session/${current.id}/message`) return json(route, [])
@@ -90,7 +94,17 @@ async function mockServers(page: Page) {
         directory: current.directory,
         home: current.directory,
       })
+    if (url.pathname === "/api/path")
+      return json(route, {
+        state: current.directory,
+        config: current.directory,
+        worktree: current.directory,
+        directory: current.directory,
+        home: current.directory,
+      })
     if (url.pathname === "/vcs") return json(route, { branch: "main", default_branch: "main" })
+    if (url.pathname === "/api/vcs")
+      return json(route, { location: { directory: current.directory }, data: { branch: "main", defaultBranch: "main" } })
     return json(route, {})
   })
 }
@@ -104,6 +118,10 @@ function json(route: Route, body: unknown, status = 200) {
   })
 }
 
-function sse(route: Route) {
-  return route.fulfill({ status: 200, contentType: "text/event-stream", body: ": ok\n\n" })
+function sse(route: Route, current: boolean) {
+  return route.fulfill({
+    status: 200,
+    contentType: "text/event-stream",
+    body: current ? 'data: {"id":"evt_connected","type":"server.connected","data":{}}\n\n' : ": ok\n\n",
+  })
 }
diff --git a/packages/app/e2e/regression/review-line-comment.spec.ts b/packages/app/e2e/regression/review-line-comment.spec.ts
index 042f926c537e..bc615871c9b3 100644
--- a/packages/app/e2e/regression/review-line-comment.spec.ts
+++ b/packages/app/e2e/regression/review-line-comment.spec.ts
@@ -143,9 +143,9 @@ async function openReview(page: Page) {
 
   await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
   await expectSessionTitle(page, title)
-  const diffResponse = page.waitForResponse((response) => new URL(response.url()).pathname === "/vcs/diff")
+  const diffResponse = page.waitForResponse((response) => new URL(response.url()).pathname === "/api/vcs/diff")
   await page.getByRole("tab", { name: "Changes" }).click()
-  expect(await (await diffResponse).json()).toHaveLength(1)
+  expect((await (await diffResponse).json()).data).toHaveLength(1)
 
   const review = page.locator('[data-component="session-review"]')
   await expectAppVisible(review)
diff --git a/packages/app/e2e/regression/review-state-persistence.spec.ts b/packages/app/e2e/regression/review-state-persistence.spec.ts
index aa42f1bb516d..f94e93004cc8 100644
--- a/packages/app/e2e/regression/review-state-persistence.spec.ts
+++ b/packages/app/e2e/regression/review-state-persistence.spec.ts
@@ -92,18 +92,20 @@ async function setup(page: Page) {
     route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify({ branch: "feature", default_branch: "dev" }),
+      body: JSON.stringify({ location: { directory }, data: { branch: "feature", defaultBranch: "dev" } }),
     }),
   )
   await page.route("**/vcs/diff**", (route) =>
     route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify(
-        new URL(route.request().url()).searchParams.get("mode") === "branch"
-          ? [diff("src/alpha.ts"), diff("src/beta.ts")]
-          : [diff("src/alpha.ts"), diff("src/gamma.ts")],
-      ),
+      body: JSON.stringify({
+        location: { directory },
+        data:
+          new URL(route.request().url()).searchParams.get("mode") === "branch"
+            ? [diff("src/alpha.ts"), diff("src/beta.ts")]
+            : [diff("src/alpha.ts"), diff("src/gamma.ts")],
+      }),
     }),
   )
   await page.addInitScript(
diff --git a/packages/app/e2e/regression/review-terminal-stacked.spec.ts b/packages/app/e2e/regression/review-terminal-stacked.spec.ts
index 154bab48c47f..aa82ad16e10d 100644
--- a/packages/app/e2e/regression/review-terminal-stacked.spec.ts
+++ b/packages/app/e2e/regression/review-terminal-stacked.spec.ts
@@ -64,39 +64,80 @@ test("keeps the review tree and terminal sized when both panels are open", async
     route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify({ branch: "review-pane-performance", default_branch: "dev" }),
+      body: JSON.stringify({
+        location: { directory },
+        data: { branch: "review-pane-performance", defaultBranch: "dev" },
+      }),
     }),
   )
-  await page.route("**/vcs/diff**", (route) => {
+  await page.route("**/api/vcs/diff**", (route) => {
     const url = new URL(route.request().url())
-    const scope = url.searchParams.get("directory")?.replaceAll("\\", "/")
+    const scope = url.searchParams.get("location[directory]")?.replaceAll("\\", "/")
     const detail = scope?.endsWith("/src/branch/d00027")
     if (detail && detailFailures-- > 0) return route.fulfill({ status: 500, body: "retry detail" })
     return route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify(
-        url.searchParams.get("mode") === "branch"
-          ? detail
-            ? branchDiffs
-                .filter((diff) => diff.file.startsWith("src/branch/d00027/"))
-                .map((diff) => fileDiff(diff.file, diff.additions, true, detailVersion))
-            : branchDiffs
-          : Array.from({ length: 7 }, (_, index) => fileDiff(`src/git-${index}.ts`, 1)),
-      ),
+      body: JSON.stringify({
+        location: { directory: scope ?? directory, project: { id: projectID, directory } },
+        data:
+          url.searchParams.get("mode") === "branch"
+            ? detail
+              ? branchDiffs
+                  .filter((diff) => diff.file.startsWith("src/branch/d00027/"))
+                  .map((diff) => fileDiff(diff.file, diff.additions, true, detailVersion))
+              : branchDiffs
+            : Array.from({ length: 7 }, (_, index) => fileDiff(`src/git-${index}.ts`, 1)),
+      }),
     })
   })
-  await page.route("**/pty", (route) =>
+  await page.route("**/api/pty?*", (route) =>
     route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify({ id: "pty_review_terminal", title: "Terminal 1" }),
+      body: JSON.stringify({
+        location: { directory, project: { id: projectID, directory } },
+        data: {
+          id: "pty_review_terminal",
+          title: "Terminal 1",
+          command: "cmd.exe",
+          args: [],
+          cwd: directory,
+          status: "running",
+          pid: 1,
+        },
+      }),
     }),
   )
-  await page.route("**/pty/pty_review_terminal", (route) =>
-    route.fulfill({ status: 200, contentType: "application/json", body: "{}" }),
+  await page.route("**/api/pty/pty_review_terminal?*", (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        location: { directory, project: { id: projectID, directory } },
+        data: {
+          id: "pty_review_terminal",
+          title: "Terminal 1",
+          command: "cmd.exe",
+          args: [],
+          cwd: directory,
+          status: "running",
+          pid: 1,
+        },
+      }),
+    }),
+  )
+  await page.route("**/api/pty/pty_review_terminal/connect-token*", (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        location: { directory, project: { id: projectID, directory } },
+        data: { ticket: "e2e-ticket", expires_in: 60 },
+      }),
+    }),
   )
-  await page.routeWebSocket("**/pty/pty_review_terminal/connect", () => undefined)
+  await page.routeWebSocket("**/api/pty/pty_review_terminal/connect", () => undefined)
   await page.addInitScript(() => {
     localStorage.setItem("settings.v3", JSON.stringify({ general: { newLayoutDesigns: true } }))
     localStorage.setItem(
@@ -134,8 +175,8 @@ test("keeps the review tree and terminal sized when both panels are open", async
   const lazyDiff = page.waitForRequest((request) => {
     const url = new URL(request.url())
     return (
-      url.pathname === "/vcs/diff" &&
-      url.searchParams.get("directory")?.replaceAll("\\", "/").endsWith("/src/branch/d00027") === true
+      url.pathname === "/api/vcs/diff" &&
+      url.searchParams.get("location[directory]")?.replaceAll("\\", "/").endsWith("/src/branch/d00027") === true
     )
   })
   await lastFile.click()
@@ -148,8 +189,8 @@ test("keeps the review tree and terminal sized when both panels are open", async
   const refreshedDiff = page.waitForRequest((request) => {
     const url = new URL(request.url())
     return (
-      url.pathname === "/vcs/diff" &&
-      url.searchParams.get("directory")?.replaceAll("\\", "/").endsWith("/src/branch/d00027") === true
+      url.pathname === "/api/vcs/diff" &&
+      url.searchParams.get("location[directory]")?.replaceAll("\\", "/").endsWith("/src/branch/d00027") === true
     )
   })
   events.push(statusEvent("idle"))
diff --git a/packages/app/e2e/regression/session-list-path-loading.spec.ts b/packages/app/e2e/regression/session-list-path-loading.spec.ts
index 4a3855122a40..3319514df648 100644
--- a/packages/app/e2e/regression/session-list-path-loading.spec.ts
+++ b/packages/app/e2e/regression/session-list-path-loading.spec.ts
@@ -16,8 +16,8 @@ test("shows loaded sessions before the directory path request resolves", async (
   const pathBlocked = new Promise<void>((resolve) => {
     releasePath = resolve
   })
-  await page.route("**/path?*", async (route) => {
-    if (!new URL(route.request().url()).searchParams.has("directory")) return route.fallback()
+  await page.route("**/api/path?*", async (route) => {
+    if (!new URL(route.request().url()).searchParams.has("location[directory]")) return route.fallback()
     await pathBlocked
     return route.fallback()
   })
diff --git a/packages/app/e2e/regression/session-request-docks.spec.ts b/packages/app/e2e/regression/session-request-docks.spec.ts
index 714d6ca96f15..6c253f462ac6 100644
--- a/packages/app/e2e/regression/session-request-docks.spec.ts
+++ b/packages/app/e2e/regression/session-request-docks.spec.ts
@@ -42,7 +42,8 @@ test("shows a pending question dock", async ({ page }) => {
   const rejectRequests: string[] = []
   page.on("request", (request) => {
     if (request.method() !== "POST") return
-    if (new URL(request.url()).pathname === "/question/question-request/reject") rejectRequests.push(request.url())
+    if (new URL(request.url()).pathname === `/api/session/${sessionID}/question/question-request/reject`)
+      rejectRequests.push(request.url())
   })
 
   await question.locator('[data-component="icon-button"][data-icon="chevron-down"]').click()
@@ -64,7 +65,9 @@ test("shows a pending question dock", async ({ page }) => {
 
   await question.getByRole("radio", { name: /Minimal/ }).click()
   const reply = page.waitForRequest(
-    (request) => request.method() === "POST" && new URL(request.url()).pathname === "/question/question-request/reply",
+    (request) =>
+      request.method() === "POST" &&
+      new URL(request.url()).pathname === `/api/session/${sessionID}/question/question-request/reply`,
   )
   await question.getByRole("button", { name: "Submit" }).click()
   expect((await reply).postDataJSON()).toEqual({ answers: [["Minimal"]] })
@@ -97,8 +100,8 @@ test("shows a pending permission dock", async ({ page }) => {
   const reply = page.waitForRequest((request) => request.method() === "POST")
   await permission.getByRole("button", { name: "Allow once" }).click()
   const request = await reply
-  expect(new URL(request.url()).pathname).toBe(`/session/${sessionID}/permissions/permission-request`)
-  expect(request.postDataJSON()).toEqual({ response: "once" })
+  expect(new URL(request.url()).pathname).toBe(`/api/session/${sessionID}/permission/permission-request/reply`)
+  expect(request.postDataJSON()).toEqual({ reply: "once" })
 })
 
 test("restores the draft caret before typing after a request dock closes", async ({ page }) => {
diff --git a/packages/app/e2e/regression/session-timeline-transport.spec.ts b/packages/app/e2e/regression/session-timeline-transport.spec.ts
index 850e966d0b0f..db9bc1196e2d 100644
--- a/packages/app/e2e/regression/session-timeline-transport.spec.ts
+++ b/packages/app/e2e/regression/session-timeline-transport.spec.ts
@@ -89,7 +89,7 @@ test("reconnects after a stream error", async ({ page }) => {
   expect((await timeline.transport.connections())[0]?.endedBy).toBe("error")
 })
 
-test("records event IDs and reconnect Last-Event-ID headers", async ({ page }) => {
+test("does not request replay when reconnecting the volatile V2 event stream", async ({ page }) => {
   const timeline = await setupTimeline(page, { eventRetry: 10 })
   const first = await timeline.transport.send(partUpdated(textPart("prt_transport_id", "event with id")), {
     id: "timeline-event-7",
@@ -100,7 +100,7 @@ test("records event IDs and reconnect Last-Event-ID headers", async ({ page }) =
   const connection = await timeline.transport.waitForConnection({ after: first.connectionID })
 
   expect(first.eventID).toBe("timeline-event-7")
-  expect(connection.headers["last-event-id"]).toBe("timeline-event-7")
+  expect(connection.headers["last-event-id"]).toBeUndefined()
 })
 
 test("passes through non-event fetches", async ({ page }) => {
diff --git a/packages/app/e2e/regression/subagent-child-navigation.spec.ts b/packages/app/e2e/regression/subagent-child-navigation.spec.ts
index 19d2c29af025..019cc156eca1 100644
--- a/packages/app/e2e/regression/subagent-child-navigation.spec.ts
+++ b/packages/app/e2e/regression/subagent-child-navigation.spec.ts
@@ -1,6 +1,6 @@
 import { base64Encode } from "@opencode-ai/core/util/encode"
 import { expect, test, type Page } from "@playwright/test"
-import { mockOpenCodeServer } from "../utils/mock-server"
+import { currentSession, mockOpenCodeServer } from "../utils/mock-server"
 import { expectSessionTitle } from "../utils/waits"
 
 const directory = "C:/OpenCode/SubagentNavigation"
@@ -72,16 +72,19 @@ async function setup(page: Page, events?: () => EventPayload[]) {
     events,
     eventRetry: events ? 16 : undefined,
   })
-  // The child session resolves via /session/:id but is absent from the /session list,
+  // The child session resolves by ID but is absent from the session list,
   // matching a subagent session that has not been loaded into the list cache yet.
   await page.route(
-    (url) => url.pathname === "/session" && url.port === (process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"),
+    (url) => url.pathname === "/api/session" && url.port === (process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"),
     (route) =>
       route.fulfill({
         status: 200,
         contentType: "application/json",
         headers: { "access-control-allow-origin": "*" },
-        body: JSON.stringify([session(parentID, parentTitle, 1700000000000)]),
+        body: JSON.stringify({
+          data: [currentSession(session(parentID, parentTitle, 1700000000000))],
+          cursor: {},
+        }),
       }),
   )
   await configurePage(page)
diff --git a/packages/app/e2e/regression/tab-navigate-mousedown.spec.ts b/packages/app/e2e/regression/tab-navigate-mousedown.spec.ts
index 94afbc9a9d66..4136c16d0129 100644
--- a/packages/app/e2e/regression/tab-navigate-mousedown.spec.ts
+++ b/packages/app/e2e/regression/tab-navigate-mousedown.spec.ts
@@ -1,5 +1,6 @@
 import { expect, test, type Page, type Route } from "@playwright/test"
 import { base64Encode } from "@opencode-ai/core/util/encode"
+import { currentSession } from "../utils/mock-server"
 
 const server = "http://127.0.0.1:4096"
 const sessionA = session("ses_tab_a", "Tab A session")
@@ -56,9 +57,14 @@ async function mockServer(page: Page) {
   await page.route("**/*", async (route) => {
     const url = new URL(route.request().url())
     if (url.origin !== server) return route.fallback()
-    if (url.pathname === "/global/event" || url.pathname === "/event") return sse(route)
+    if (url.pathname === "/global/event" || url.pathname === "/event" || url.pathname === "/api/event") return sse(route)
     if (url.pathname === "/global/health") return json(route, { healthy: true })
-    if (url.pathname === "/session") return json(route, sessions)
+    if (url.pathname === "/api/session") return json(route, { data: sessions.map(currentSession), cursor: {} })
+    if (url.pathname === "/api/session/active") return json(route, { data: {} })
+    const currentSessionInfo = sessions.find((item) => url.pathname === `/api/session/${item.id}`)
+    if (currentSessionInfo) return json(route, { data: currentSession(currentSessionInfo) })
+    if (sessions.some((item) => url.pathname === `/api/session/${item.id}/message`))
+      return json(route, { data: [], cursor: {} })
     const byId = sessions.find((item) => url.pathname === `/session/${item.id}`)
     if (byId) return json(route, byId)
     if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
@@ -66,7 +72,7 @@ async function mockServer(page: Page) {
     if (/^\/session\/[^/]+\/(children|todo|diff)$/.test(url.pathname)) return json(route, [])
     if (["/skill", "/command", "/lsp", "/formatter", "/permission", "/question", "/vcs/diff"].includes(url.pathname))
       return json(route, [])
-    if (["/global/config", "/config", "/provider/auth", "/mcp", "/session/status"].includes(url.pathname))
+    if (["/global/config", "/config", "/provider/auth", "/mcp"].includes(url.pathname))
       return json(route, {})
     if (url.pathname === "/provider")
       return json(route, { all: [], connected: [], default: { providerID: "", modelID: "" } })
@@ -89,7 +95,20 @@ async function mockServer(page: Page) {
         directory: sessionA.directory,
         home: sessionA.directory,
       })
+    if (url.pathname === "/api/path")
+      return json(route, {
+        state: sessionA.directory,
+        config: sessionA.directory,
+        worktree: sessionA.directory,
+        directory: sessionA.directory,
+        home: sessionA.directory,
+      })
     if (url.pathname === "/vcs") return json(route, { branch: "main", default_branch: "main" })
+    if (url.pathname === "/api/vcs")
+      return json(route, {
+        location: { directory: sessionA.directory },
+        data: { branch: "main", defaultBranch: "main" },
+      })
     return json(route, {})
   })
 }
diff --git a/packages/app/e2e/regression/terminal-composer-focus.spec.ts b/packages/app/e2e/regression/terminal-composer-focus.spec.ts
index f67260278228..f1f734f34377 100644
--- a/packages/app/e2e/regression/terminal-composer-focus.spec.ts
+++ b/packages/app/e2e/regression/terminal-composer-focus.spec.ts
@@ -46,25 +46,30 @@ test.beforeEach(async ({ page }) => {
     ],
     pageMessages: () => ({ items: [] }),
   })
-  await page.route("**/pty", (route) =>
+  await page.route("**/api/pty?*", (route) => {
+    expect(new URL(route.request().url()).searchParams.get("location[directory]")).toBe(directory)
+    return route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({ location: ptyLocation(), data: ptyInfo(ptyID, "Terminal 1") }),
+    })
+  })
+  await page.route(`**/api/pty/${ptyID}?*`, (route) =>
     route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify({ id: ptyID, title: "Terminal 1" }),
+      body: JSON.stringify({ location: ptyLocation(), data: ptyInfo(ptyID, "Terminal 1") }),
     }),
   )
-  await page.route(`**/pty/${ptyID}`, (route) =>
-    route.fulfill({ status: 200, contentType: "application/json", body: "{}" }),
-  )
-  await page.route(`**/pty/${ptyID}/connect-token*`, (route) =>
+  await page.route(`**/api/pty/${ptyID}/connect-token*`, (route) =>
     route.fulfill({
       status: 200,
       contentType: "application/json",
       headers: { "access-control-allow-origin": "*" },
-      body: JSON.stringify({ ticket: "e2e-ticket" }),
+      body: JSON.stringify({ location: ptyLocation(), data: { ticket: "e2e-ticket", expires_in: 60 } }),
     }),
   )
-  await page.routeWebSocket(new RegExp(`/pty/${ptyID}/connect`), () => undefined)
+  await page.routeWebSocket(new RegExp(`/api/pty/${ptyID}/connect`), () => undefined)
   await page.addInitScript(() => {
     localStorage.setItem("settings.v3", JSON.stringify({ general: { newLayoutDesigns: true } }))
   })
@@ -95,12 +100,12 @@ test("keeps composer focus when a cached terminal finishes mounting", async ({ p
   const ghostty = Promise.withResolvers<void>()
   const release = Promise.withResolvers<void>()
   const created = { count: 0 }
-  await page.route("**/pty", (route) => {
+  await page.route("**/api/pty?*", (route) => {
     created.count += 1
     return route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify({ id: ptyID, title: "Terminal 1" }),
+      body: JSON.stringify({ location: ptyLocation(), data: ptyInfo(ptyID, "Terminal 1") }),
     })
   })
   await page.route(/ghostty-web/, async (route) => {
@@ -155,27 +160,31 @@ test("keeps newer composer focus while an explicit terminal open finishes", asyn
 
 test("focuses a terminal created from the new-terminal button", async ({ page }) => {
   const created = { count: 0 }
-  await page.route("**/pty", (route) => {
+  await page.route("**/api/pty?*", (route) => {
     created.count += 1
-    const next = created.count === 1 ? { id: ptyID, title: "Terminal 1" } : { id: newPtyID, title: "Terminal 2" }
+    const next = created.count === 1 ? ptyInfo(ptyID, "Terminal 1") : ptyInfo(newPtyID, "Terminal 2")
     return route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify(next),
+      body: JSON.stringify({ location: ptyLocation(), data: next }),
     })
   })
-  await page.route(`**/pty/${newPtyID}`, (route) =>
-    route.fulfill({ status: 200, contentType: "application/json", body: "{}" }),
+  await page.route(`**/api/pty/${newPtyID}?*`, (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({ location: ptyLocation(), data: ptyInfo(newPtyID, "Terminal 2") }),
+    }),
   )
-  await page.route(`**/pty/${newPtyID}/connect-token*`, (route) =>
+  await page.route(`**/api/pty/${newPtyID}/connect-token*`, (route) =>
     route.fulfill({
       status: 200,
       contentType: "application/json",
       headers: { "access-control-allow-origin": "*" },
-      body: JSON.stringify({ ticket: "e2e-ticket" }),
+      body: JSON.stringify({ location: ptyLocation(), data: { ticket: "e2e-ticket", expires_in: 60 } }),
     }),
   )
-  await page.routeWebSocket(new RegExp(`/pty/${newPtyID}/connect`), () => undefined)
+  await page.routeWebSocket(new RegExp(`/api/pty/${newPtyID}/connect`), () => undefined)
 
   await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
   await expectSessionTitle(page, "Terminal composer focus")
@@ -207,3 +216,11 @@ function seedCachedTerminal(page: Page) {
     { terminalKey: `${base64Encode(directory)}/terminal.v1`, ptyID },
   )
 }
+
+function ptyLocation() {
+  return { directory, project: { id: projectID, directory } }
+}
+
+function ptyInfo(id: string, title: string) {
+  return { id, title, command: "cmd.exe", args: [], cwd: directory, status: "running", pid: 1 }
+}
diff --git a/packages/app/e2e/regression/terminal-hidden.spec.ts b/packages/app/e2e/regression/terminal-hidden.spec.ts
index 73821580af07..1b3369641556 100644
--- a/packages/app/e2e/regression/terminal-hidden.spec.ts
+++ b/packages/app/e2e/regression/terminal-hidden.spec.ts
@@ -43,17 +43,53 @@ test("unmounts the terminal panel while it is hidden", async ({ page }) => {
     ],
     pageMessages: () => ({ items: [] }),
   })
-  await page.route("**/pty", (route) =>
+  await page.route("**/api/pty?*", (route) =>
     route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify({ id: "pty_hidden_terminal", title: "Terminal 1" }),
+      body: JSON.stringify({
+        location: { directory, project: { id: projectID, directory } },
+        data: {
+          id: "pty_hidden_terminal",
+          title: "Terminal 1",
+          command: "cmd.exe",
+          args: [],
+          cwd: directory,
+          status: "running",
+          pid: 1,
+        },
+      }),
     }),
   )
-  await page.route("**/pty/pty_hidden_terminal", (route) =>
-    route.fulfill({ status: 200, contentType: "application/json", body: "{}" }),
+  await page.route("**/api/pty/pty_hidden_terminal?*", (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        location: { directory, project: { id: projectID, directory } },
+        data: {
+          id: "pty_hidden_terminal",
+          title: "Terminal 1",
+          command: "cmd.exe",
+          args: [],
+          cwd: directory,
+          status: "running",
+          pid: 1,
+        },
+      }),
+    }),
+  )
+  await page.route("**/api/pty/pty_hidden_terminal/connect-token*", (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        location: { directory, project: { id: projectID, directory } },
+        data: { ticket: "e2e-ticket", expires_in: 60 },
+      }),
+    }),
   )
-  await page.routeWebSocket("**/pty/pty_hidden_terminal/connect", () => undefined)
+  await page.routeWebSocket("**/api/pty/pty_hidden_terminal/connect", () => undefined)
 
   await page.goto(`/${base64Encode(directory)}/session/${sessionID}`)
   await expectSessionTitle(page, title)
diff --git a/packages/app/e2e/regression/terminal-tab-switch.spec.ts b/packages/app/e2e/regression/terminal-tab-switch.spec.ts
index cbb72958ad3a..d1ff35a2454d 100644
--- a/packages/app/e2e/regression/terminal-tab-switch.spec.ts
+++ b/packages/app/e2e/regression/terminal-tab-switch.spec.ts
@@ -29,6 +29,10 @@ test("keeps the terminal session alive when switching session tabs in a workspac
   const terminal = page.locator('[data-component="terminal"]')
   await expect(terminal).toBeVisible()
   await expect.poll(() => connections.length).toBe(1)
+  const connection = new URL(connections[0]!)
+  expect(connection.pathname).toBe(`/api/pty/${ptyID}/connect`)
+  expect(connection.searchParams.get("location[directory]")).toBe(directory)
+  expect(connection.searchParams.get("ticket")).toBe("e2e-ticket")
   await writeProbe(page)
 
   await switchTab(page, titleB)
@@ -85,26 +89,33 @@ async function setup(page: Page) {
     sessions: [session(sessionA, titleA, 1700000000000), session(sessionB, titleB, 1700000001000)],
     pageMessages: () => ({ items: [] }),
   })
-  await page.route("**/pty", (route) =>
+  await page.route("**/api/pty?*", (route) =>
     route.fulfill({
       status: 200,
       contentType: "application/json",
-      body: JSON.stringify({ id: ptyID, title: "Terminal 1" }),
+      body: JSON.stringify({ location: ptyLocation(), data: ptyInfo() }),
     }),
   )
-  await page.route(`**/pty/${ptyID}`, (route) =>
-    route.fulfill({ status: 200, contentType: "application/json", body: "{}" }),
-  )
-  await page.route(`**/pty/${ptyID}/connect-token*`, (route) =>
+  await page.route(`**/api/pty/${ptyID}?*`, (route) =>
     route.fulfill({
       status: 200,
       contentType: "application/json",
-      headers: { "access-control-allow-origin": "*" },
-      body: JSON.stringify({ ticket: "e2e-ticket" }),
+      body: JSON.stringify({ location: ptyLocation(), data: ptyInfo() }),
     }),
   )
+  await page.route(`**/api/pty/${ptyID}/connect-token*`, (route) => {
+    expect(route.request().headers()["x-opencode-ticket"]).toBe("1")
+    const url = new URL(route.request().url())
+    expect(url.searchParams.get("location[directory]")).toBe(directory)
+    return route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      headers: { "access-control-allow-origin": "*" },
+      body: JSON.stringify({ location: ptyLocation(), data: { ticket: "e2e-ticket", expires_in: 60 } }),
+    })
+  })
   const connections: string[] = []
-  await page.routeWebSocket(new RegExp(`/pty/${ptyID}/connect`), (ws) => {
+  await page.routeWebSocket(new RegExp(`/api/pty/${ptyID}/connect`), (ws) => {
     connections.push(ws.url())
   })
 
@@ -143,3 +154,11 @@ function session(id: string, title: string, created: number) {
 function sessionHref(sessionID: string) {
   return `/server/${base64Encode(server)}/session/${sessionID}`
 }
+
+function ptyLocation() {
+  return { directory, project: { id: projectID, directory } }
+}
+
+function ptyInfo() {
+  return { id: ptyID, title: "Terminal 1", command: "cmd.exe", args: [], cwd: directory, status: "running", pid: 1 }
+}
diff --git a/packages/app/e2e/utils/mock-server.ts b/packages/app/e2e/utils/mock-server.ts
index 2bfba5871aba..ba91aa2aa25b 100644
--- a/packages/app/e2e/utils/mock-server.ts
+++ b/packages/app/e2e/utils/mock-server.ts
@@ -54,14 +54,18 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
     if (url.port !== targetPort && url.port !== appPort) return route.fallback()
 
     const path = url.pathname
-    if (path === "/global/event" || path === "/event") return sse(route, config.events?.(), config.eventRetry)
+    if (path === "/global/event" || path === "/event" || path === "/api/event") {
+      const events = config.events?.()
+      return sse(
+        route,
+        path === "/api/event"
+          ? [{ id: "evt_mock_connected", type: "server.connected", data: {} }, ...(events?.map(currentEvent) ?? [])]
+          : events,
+        config.eventRetry,
+      )
+    }
     if (path === "/global/health") return json(route, { healthy: true })
-    if (path === "/api/session")
-      return json(route, {
-        data: config.sessions.map((session) => v2Session(session, config.directory)),
-        cursor: {},
-      })
-    if (path === "/experimental/capabilities") return json(route, { backgroundSubagents: false })
+    if (path === "/experimental/capabilities") return json(route, { backgroundSubagents: true })
     if (path === "/permission")
       return json(route, typeof config.permissions === "function" ? config.permissions() : (config.permissions ?? []))
     if (path === "/question")
@@ -89,10 +93,122 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
         },
         data: [],
       })
+    if (path === "/api/agent")
+      return json(route, {
+        location: location(config),
+        data: [
+          {
+            id: "build",
+            name: "Build",
+            mode: "primary",
+            hidden: false,
+            request: { settings: {}, headers: {}, body: {} },
+            permissions: [],
+          },
+        ],
+      })
+    if (path === "/api/command") return json(route, { location: location(config), data: [] })
+    if (path === "/api/mcp") return json(route, { location: location(config), data: [] })
+    if (path === "/api/mcp/resource")
+      return json(route, { location: location(config), data: { resources: [], templates: [] } })
+    const integration = path.match(/^\/api\/integration\/([^/]+)$/)?.[1]
+    if (integration && route.request().method() === "GET")
+      return json(route, {
+        location: location(config),
+        data: { id: integration, name: integration, methods: [{ type: "key", label: "API key" }], connections: [] },
+      })
+    if (/^\/api\/integration\/[^/]+\/connect\/key$/.test(path) && route.request().method() === "POST")
+      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
+    if (path === "/api/project") return json(route, [config.project])
+    if (path === "/api/project/current")
+      return json(route, { id: (config.project as { id?: string }).id, directory: config.directory })
+    if (path.startsWith("/api/project/") && route.request().method() === "PATCH") return json(route, config.project)
+    if (path === "/api/path")
+      return json(route, {
+        state: config.directory,
+        config: config.directory,
+        worktree: config.directory,
+        directory: config.directory,
+        home: "C:/OpenCode",
+      })
+    if (path === "/api/permission/request")
+      return json(route, {
+        location: location(config),
+        data: (typeof config.permissions === "function" ? config.permissions() : (config.permissions ?? [])).map(
+          currentPermission,
+        ),
+      })
+    if (path === "/api/question/request")
+      return json(route, {
+        location: location(config),
+        data: typeof config.questions === "function" ? config.questions() : (config.questions ?? []),
+      })
+    if (path === "/api/vcs")
+      return json(route, { location: location(config), data: { branch: "main", defaultBranch: "main" } })
+    if (path === "/api/vcs/status") return json(route, { location: location(config), data: [] })
+    if (path === "/api/vcs/diff") return json(route, { location: location(config), data: config.vcsDiff ?? [] })
+    if (path === "/api/pty/shells") return json(route, { location: location(config), data: [] })
+    if (/^\/api\/pty\/[^/]+\/connect-token$/.test(path))
+      return json(route, { location: location(config), data: { ticket: "e2e-ticket", expires_in: 60 } })
     if (emptyObject.has(path)) return json(route, {})
     if (emptyList.has(path)) return json(route, [])
+    if (path === "/api/session") {
+      const directory = url.searchParams.get("directory")
+      const parentID = url.searchParams.get("parentID")
+      const limit = Number(url.searchParams.get("limit") ?? 50)
+      const offset = Number(url.searchParams.get("cursor") ?? 0)
+      const sessions = config.sessions
+        .filter((session) => !directory || session.directory === directory)
+        .filter((session) => parentID !== "null" || session.parentID === undefined)
+        .filter((session) => {
+          const search = url.searchParams.get("search")?.toLowerCase()
+          return !search || String(session.title ?? "").toLowerCase().includes(search)
+        })
+      const ordered = url.searchParams.get("order") === "asc" ? sessions.toReversed() : sessions
+      const data = ordered.slice(offset, offset + limit)
+      const next = offset + limit < ordered.length ? String(offset + limit) : undefined
+      return json(route, {
+        data: data.map((session) => currentSession(session, config.directory)),
+        cursor: { next },
+      })
+    }
+    if (path === "/api/session/active") {
+      const statuses = (config.sessionStatus ?? {}) as Record<string, { type?: string }>
+      return json(route, {
+        data: Object.fromEntries(
+          Object.entries(statuses).flatMap(([id, status]) => (status.type === "idle" ? [] : [[id, { type: "running" }]])),
+        ),
+      })
+    }
+    if (/^\/api\/session\/[^/]+\/shell$/.test(path) && route.request().method() === "POST") {
+      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
+    }
+    if (/^\/api\/session\/[^/]+\/question\/[^/]+\/(reply|reject)$/.test(path) && route.request().method() === "POST") {
+      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
+    }
+    if (/^\/api\/session\/[^/]+\/permission\/[^/]+\/reply$/.test(path) && route.request().method() === "POST") {
+      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
+    }
+    if (
+      /^\/api\/session\/[^/]+\/(archive|rename|interrupt|revert\/clear|revert\/commit)$/.test(path) &&
+      route.request().method() === "POST"
+    ) {
+      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
+    }
+    if (/^\/api\/session\/[^/]+$/.test(path) && route.request().method() === "DELETE") {
+      return route.fulfill({ status: 204, headers: { "access-control-allow-origin": "*" } })
+    }
     if (path in staticRoutes) return json(route, staticRoutes[path])
 
+    const currentSessionMatch = path.match(/^\/api\/session\/([^/]+)$/)
+    if (currentSessionMatch) {
+      const session = config.sessions.find((item) => item.id === currentSessionMatch[1])
+      if (!session) return json(route, { error: "Session not found" }, undefined, 404)
+      return json(route, {
+        data: currentSession(session, config.directory),
+      })
+    }
+
     const sessionMatch = path.match(/^\/session\/([^/]+)$/)
     if (sessionMatch) {
       const session = config.sessions.find((s) => s.id === sessionMatch[1])
@@ -115,6 +231,24 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
     if (todoMatch) return json(route, config.todos?.(todoMatch[1]!) ?? [])
     if (/^\/session\/[^/]+\/(children|diff)$/.test(path)) return json(route, [])
 
+    const currentMessagesMatch = path.match(/^\/api\/session\/([^/]+)\/message$/)
+    if (currentMessagesMatch) {
+      const token = url.searchParams.get("cursor") ?? undefined
+      const before = token ? cursors.get(token) : undefined
+      if (token && !before) return json(route, { error: "Invalid cursor" }, undefined, 400)
+      config.onMessages?.({ sessionID: currentMessagesMatch[1], before, phase: "start" })
+      await config.beforeMessagesResponse?.({ sessionID: currentMessagesMatch[1]!, before })
+      if (config.messageDelay !== undefined) await new Promise((resolve) => setTimeout(resolve, config.messageDelay))
+      const pageData = config.pageMessages(currentMessagesMatch[1], Number(url.searchParams.get("limit") ?? 50), before)
+      config.onMessages?.({ sessionID: currentMessagesMatch[1], before, phase: "end" })
+      const cursor = pageData.cursor ? `cursor_${++nextCursor}` : undefined
+      if (cursor) cursors.set(cursor, pageData.cursor!)
+      return json(route, {
+        data: pageData.items.map(currentMessage).reverse(),
+        cursor: { next: cursor },
+      })
+    }
+
     const messagesMatch = path.match(/^\/session\/([^/]+)\/message$/)
     if (messagesMatch) {
       const token = url.searchParams.get("before") ?? undefined
@@ -137,12 +271,36 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
   })
 }
 
-function v2Session(session: { id: string } & Record<string, unknown>, fallbackDirectory: string) {
+function location(config: MockServerConfig) {
+  return {
+    directory: config.directory,
+    project: { id: (config.project as { id?: string }).id, directory: config.directory },
+  }
+}
+
+function currentPermission(value: unknown) {
+  const permission = value as Record<string, unknown>
+  if (permission.action) return permission
+  const tool = permission.tool as { messageID?: string; callID?: string } | undefined
+  return {
+    id: permission.id,
+    sessionID: permission.sessionID,
+    action: permission.permission,
+    resources: permission.patterns ?? [],
+    save: permission.always,
+    metadata: permission.metadata,
+    source: tool?.messageID && tool.callID ? { type: "tool", messageID: tool.messageID, callID: tool.callID } : undefined,
+  }
+}
+
+export function currentSession(session: { id: string } & Record<string, unknown>, fallbackDirectory?: string) {
   const time = session.time && typeof session.time === "object" ? session.time : {}
   return {
     id: session.id,
     parentID: session.parentID,
     projectID: session.projectID ?? "project",
+    agent: session.agent ?? "build",
+    model: session.model ?? { id: "mock-model", providerID: "mock-provider" },
     cost: session.cost ?? 0,
     tokens: session.tokens ?? { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
     time: {
@@ -157,7 +315,67 @@ function v2Session(session: { id: string } & Record<string, unknown>, fallbackDi
       directory: typeof session.directory === "string" ? session.directory : fallbackDirectory,
       ...(typeof session.workspaceID === "string" ? { workspaceID: session.workspaceID } : {}),
     },
-    ...(typeof session.path === "string" ? { subpath: session.path } : {}),
+    subpath: session.path,
+    revert: session.revert,
+  }
+}
+
+function currentMessage(value: unknown) {
+  const item = value as {
+    info: Record<string, unknown> & { id: string; role: "user" | "assistant"; time: { created: number } }
+    parts: Array<Record<string, unknown> & { type: string }>
+  }
+  if (item.info.role === "user") {
+    return {
+      id: item.info.id,
+      type: "user",
+      time: item.info.time,
+      text: item.parts
+        .flatMap((part) => (part.type === "text" && typeof part.text === "string" ? [part.text] : []))
+        .join("\n"),
+    }
+  }
+  return {
+    id: item.info.id,
+    type: "assistant",
+    time: item.info.time,
+    agent: item.info.agent ?? "build",
+    model: { id: item.info.modelID ?? "model", providerID: item.info.providerID ?? "provider" },
+    cost: item.info.cost,
+    tokens: item.info.tokens,
+    error: item.info.error,
+    content: item.parts.flatMap<unknown>((part) => {
+      if (part.type === "text" || part.type === "reasoning") return [{ type: part.type, text: part.text ?? "" }]
+      if (part.type !== "tool") return []
+      const state = part.state as Record<string, unknown>
+      return [
+        {
+          type: "tool",
+          id: part.id,
+          name: part.tool,
+          time: state.time ?? { created: item.info.time.created },
+          state:
+            state.status === "pending"
+              ? { status: "streaming", input: state.raw ?? JSON.stringify(state.input ?? {}) }
+              : state.status === "completed"
+                ? {
+                    status: "completed",
+                    input: state.input ?? {},
+                    structured: state.metadata ?? {},
+                    content: [{ type: "text", text: state.output ?? "" }],
+                  }
+                : state.status === "error"
+                  ? {
+                      status: "error",
+                      input: state.input ?? {},
+                      structured: state.metadata ?? {},
+                      content: [],
+                      error: { type: "ToolError", message: state.error ?? "Tool failed" },
+                    }
+                  : { status: "running", input: state.input ?? {}, structured: state.metadata ?? {}, content: [] },
+        },
+      ]
+    }),
   }
 }
 
@@ -181,3 +399,18 @@ function sse(route: Route, events?: unknown[], retry?: number) {
     body: `${retry === undefined ? "" : `retry: ${retry}\n\n`}${events?.map((event) => `data: ${JSON.stringify(event)}\n\n`).join("") || ": ok\n\n"}`,
   })
 }
+
+function currentEvent(input: unknown) {
+  if (!input || typeof input !== "object" || !("payload" in input)) return input
+  const envelope = input as { directory?: string; payload?: unknown }
+  if (!envelope.payload || typeof envelope.payload !== "object") return input
+  const payload = envelope.payload as { id?: string; type?: string; properties?: unknown }
+  if (!payload.type) return input
+  return {
+    id: payload.id ?? `evt_mock_${Date.now()}`,
+    created: Date.now(),
+    type: payload.type,
+    data: payload.properties ?? {},
+    location: envelope.directory && envelope.directory !== "global" ? { directory: envelope.directory } : undefined,
+  }
+}
diff --git a/packages/app/e2e/utils/sse-transport.ts b/packages/app/e2e/utils/sse-transport.ts
index 55420485f399..66686ac25943 100644
--- a/packages/app/e2e/utils/sse-transport.ts
+++ b/packages/app/e2e/utils/sse-transport.ts
@@ -3,7 +3,7 @@ import type { Page } from "@playwright/test"
 export type SseConnectionRecord = {
   id: number
   url: string
-  path: "/global/event" | "/event"
+  path: "/global/event" | "/event" | "/api/event"
   headers: Record<string, string>
   openedAt: number
   endedAt?: number
@@ -93,6 +93,20 @@ export async function installSseTransport<T>(
           eventOptions.retry === undefined ? "" : `retry: ${eventOptions.retry}\n`,
           `data: ${JSON.stringify(payload)}\n\n`,
         ].join("")
+      const currentEvent = (input: unknown) => {
+        if (!input || typeof input !== "object" || !("payload" in input)) return input
+        const envelope = input as { directory?: string; payload?: unknown }
+        if (!envelope.payload || typeof envelope.payload !== "object") return input
+        const payload = envelope.payload as { id?: string; type?: string; properties?: unknown }
+        if (!payload.type) return input
+        return {
+          id: payload.id ?? `evt_mock_${Date.now()}`,
+          created: Date.now(),
+          type: payload.type,
+          data: payload.properties ?? {},
+          location: envelope.directory && envelope.directory !== "global" ? { directory: envelope.directory } : undefined,
+        }
+      }
       const acknowledge = (
         connection: Connection,
         bytes: number,
@@ -140,14 +154,14 @@ export async function installSseTransport<T>(
           output.forEach((chunk) => connection.controller.enqueue(chunk))
           return acknowledge(connection, input.bytes.length, output.length)
         }
-        const encoded = input.deliveries.map((delivery) => ({
-          delivery,
-          bytes: encoder.encode(frame(delivery.payload, delivery.options)),
-        }))
+        const encoded = input.deliveries.map((delivery) => {
+          const payload = connection.path === "/api/event" ? currentEvent(delivery.payload) : delivery.payload
+          return { delivery, payload, bytes: encoder.encode(frame(payload, delivery.options)) }
+        })
         encoded.forEach((item) => marker(item.delivery.options?.marker))
         if (input.burst) {
           const bytes = encoder.encode(
-            encoded.map((item) => frame(item.delivery.payload, item.delivery.options)).join(""),
+            encoded.map((item) => frame(item.payload, item.delivery.options)).join(""),
           )
           connection.controller.enqueue(bytes)
           return encoded.map((item) => acknowledge(connection, item.bytes.byteLength, 1, item.delivery.options?.id))
@@ -161,7 +175,10 @@ export async function installSseTransport<T>(
       const fetch = (input: RequestInfo | URL, init?: RequestInit) => {
         const request = new Request(input, init)
         const url = new URL(request.url)
-        if (url.origin !== server || (url.pathname !== "/global/event" && url.pathname !== "/event"))
+        if (
+          url.origin !== server ||
+          (url.pathname !== "/global/event" && url.pathname !== "/event" && url.pathname !== "/api/event")
+        )
           return originalFetch(request)
 
         const id = ++nextConnectionID
@@ -177,6 +194,12 @@ export async function installSseTransport<T>(
             record.controller = controller
             connections.push(record)
             if (retry !== undefined) controller.enqueue(encoder.encode(`retry: ${retry}\n\n`))
+            if (url.pathname === "/api/event")
+              controller.enqueue(
+                encoder.encode(
+                  frame({ id: `evt_mock_connected_${id}`, type: "server.connected", data: {} }),
+                ),
+              )
             request.signal.addEventListener(
               "abort",
               () => {
diff --git a/packages/app/package.json b/packages/app/package.json
index faf019446128..f6a1bf9d2ea7 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -53,6 +53,7 @@
     "@dnd-kit/helpers": "0.5.0",
     "@dnd-kit/solid": "0.5.0",
     "@kobalte/core": "catalog:",
+    "@opencode-ai/client": "file:vendor/opencode-ai-client-1.17.13.tgz",
     "@opencode-ai/core": "workspace:*",
     "@opencode-ai/schema": "workspace:*",
     "@opencode-ai/sdk": "workspace:*",
diff --git a/packages/app/src/components/command-palette.ts b/packages/app/src/components/command-palette.ts
index 59d3cbd1da72..487d8235509e 100644
--- a/packages/app/src/components/command-palette.ts
+++ b/packages/app/src/components/command-palette.ts
@@ -1,5 +1,6 @@
 import { getFilename } from "@opencode-ai/core/util/path"
-import type { GlobalSession, Project } from "@opencode-ai/sdk/v2/client"
+import type { Project } from "@opencode-ai/sdk/v2/client"
+import type { SessionInfo } from "@opencode-ai/client/promise"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { createMemo, onCleanup } from "solid-js"
 import { commandPaletteOptions, useCommand, type CommandOption } from "@/context/command"
@@ -13,6 +14,7 @@ import { useTabs } from "@/context/tabs"
 import { displayName, projectForSession } from "@/pages/layout/helpers"
 import { createSessionTabs } from "@/pages/session/helpers"
 import { useSessionLayout } from "@/pages/session/session-layout"
+import { normalizeSessionInfo } from "@/utils/session"
 
 export type CommandPaletteEntry = {
   id: string
@@ -145,7 +147,7 @@ export function createCommandPaletteModel(props: { filesOnly?: () => boolean; on
     opened: serverCtx.projects.list,
     stored: () => serverCtx.sync.data.project,
     load: (search, signal) =>
-      serverSDK.client.experimental.session.list({ roots: true, search, limit: 50 }, { signal }),
+      serverSDK.api.session.list({ parentID: null, search, limit: 50 }, { signal }),
     untitled: () => language.t("command.session.new"),
     category: () => language.t("command.category.session"),
   })
@@ -219,7 +221,7 @@ export function createServerSessionEntries(props: {
   server: ServerConnection.Key
   opened: () => LocalProject[]
   stored: () => Project[]
-  load: (search: string, signal: AbortSignal) => Promise<{ data?: GlobalSession[] }>
+  load: (search: string, signal: AbortSignal) => Promise<{ data: SessionInfo[] }>
   untitled: () => string
   category: () => string
 }) {
@@ -255,7 +257,8 @@ export function createServerSessionEntries(props: {
     return props
       .load(search, current.signal)
       .then((result) =>
-        (result.data ?? [])
+        result.data
+          .map(normalizeSessionInfo)
           .filter((session) => !session.time.archived)
           .map((session) => {
             const project =
@@ -264,7 +267,7 @@ export function createServerSessionEntries(props: {
               id: `session:${props.server}:${session.id}`,
               type: "session" as const,
               title: session.title || props.untitled(),
-              description: project ? displayName(project) : session.project?.name || getFilename(session.directory),
+              description: project ? displayName(project) : getFilename(session.directory),
               category: props.category(),
               directory: session.directory,
               sessionID: session.id,
diff --git a/packages/app/src/components/dialog-command-palette-v2.tsx b/packages/app/src/components/dialog-command-palette-v2.tsx
index 85ca44ae69db..c23b703e5255 100644
--- a/packages/app/src/components/dialog-command-palette-v2.tsx
+++ b/packages/app/src/components/dialog-command-palette-v2.tsx
@@ -80,7 +80,7 @@ export function DialogHomeCommandPaletteV2(props: {
     opened: serverCtx.projects.list,
     stored: () => serverCtx.sync.data.project,
     load: (search, signal) =>
-      serverCtx.sdk.client.experimental.session.list({ roots: true, search, limit: 50 }, { signal }),
+      serverCtx.sdk.api.session.list({ parentID: null, search, limit: 50 }, { signal }),
     untitled: () => language.t("command.session.new"),
     category: () => language.t("command.category.session"),
   })
diff --git a/packages/app/src/components/dialog-connect-provider.tsx b/packages/app/src/components/dialog-connect-provider.tsx
index 4c58857249dd..93a62acb61d3 100644
--- a/packages/app/src/components/dialog-connect-provider.tsx
+++ b/packages/app/src/components/dialog-connect-provider.tsx
@@ -1,4 +1,7 @@
-import type { ProviderAuthAuthorization, ProviderAuthMethod } from "@opencode-ai/sdk/v2/client"
+import type {
+  IntegrationMethod,
+  IntegrationOauthConnectOutput,
+} from "@opencode-ai/client/promise"
 import { Button } from "@opencode-ai/ui/button"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { Dialog } from "@opencode-ai/ui/dialog"
@@ -28,6 +31,8 @@ import {
   Switch,
 } from "solid-js"
 import { createStore, produce } from "solid-js/store"
+import { useQueryClient } from "@tanstack/solid-query"
+import { useParams } from "@solidjs/router"
 import { Link } from "@/components/link"
 import { useServerSDK } from "@/context/server-sdk"
 import { useServerSync } from "@/context/server-sync"
@@ -35,8 +40,11 @@ import { useLanguage } from "@/context/language"
 import { useSettings } from "@/context/settings"
 import { popularProviders, useProviders } from "@/hooks/use-providers"
 import { CustomProviderForm } from "./dialog-custom-provider"
+import { decode64 } from "@/utils/base64"
+import { pathKey } from "@/utils/path-key"
 
 const CUSTOM_ID = "_custom"
+type ConnectMethod = Extract<IntegrationMethod, { type: "key" | "oauth" }>
 
 export function useProviderConnectController(options: { onBack?: () => void } = {}) {
   const [store, setStore] = createStore({ selected: undefined as string | undefined })
@@ -228,8 +236,6 @@ function ProviderPickerV2(props: {
 }) {
   const providers = useProviders(props.directory)
   const language = useLanguage()
-  const serverSync = useServerSync()
-  const serverSDK = useServerSDK()
   const [store, setStore] = createStore({
     filter: "",
     active: undefined as string | undefined,
@@ -266,19 +272,7 @@ function ProviderPickerV2(props: {
 
   const connect = (provider: string) => {
     props.onPrepare?.()
-    if (provider === CUSTOM_ID || serverSync().data.provider_auth[provider]) {
-      props.onSelect(provider)
-      return
-    }
-    if (store.connecting) return
-    setStore("connecting", provider)
-    void serverSDK()
-      .client.provider.auth()
-      .then((response) => {
-        serverSync().set("provider_auth", response.data ?? {})
-        props.onSelect(provider)
-      })
-      .catch(() => props.onSelect(provider))
+    props.onSelect(provider)
   }
 
   const move = (event: KeyboardEvent, direction: number) => {
@@ -395,10 +389,17 @@ function ProviderConnection(props: {
   const dialog = useDialog()
   const serverSync = useServerSync()
   const serverSDK = useServerSDK()
+  const queryClient = useQueryClient()
+  const params = useParams()
   const language = useLanguage()
   const settings = useSettings()
   const newLayout = settings.general.newLayoutDesigns
   const providers = useProviders(props.directory)
+  const directory = () => props.directory?.() ?? decode64(params.dir)
+  const location = () => {
+    const value = directory()
+    return value ? { directory: value } : undefined
+  }
 
   const alive = { value: true }
   const timer = { current: undefined as ReturnType<typeof setTimeout> | undefined }
@@ -413,38 +414,34 @@ function ProviderConnection(props: {
   const provider = createMemo(
     () => providers.all().get(props.provider) ?? serverSync().data.provider.all.get(props.provider)!,
   )
-  const fallback = createMemo<ProviderAuthMethod[]>(() => [
+  const fallback = createMemo<ConnectMethod[]>(() => [
     {
-      type: "api" as const,
+      type: "key" as const,
       label: language.t("provider.connect.method.apiKey"),
     },
   ])
-  const [auth] = createResource(
-    () => props.provider,
-    async () => {
-      const cached = serverSync().data.provider_auth[props.provider]
-      if (cached) return cached
-      const res = await serverSDK().client.provider.auth()
-      if (!alive.value) return fallback()
-      serverSync().set("provider_auth", res.data ?? {})
-      return res.data?.[props.provider] ?? fallback()
-    },
+  const [integration] = createResource(
+    () => ({ provider: props.provider, directory: directory() }),
+    (input) =>
+      serverSDK()
+        .api.integration.get({
+          integrationID: input.provider,
+          location: input.directory ? { directory: input.directory } : undefined,
+        })
+        .then((result) => result.data),
   )
-  const loading = createMemo(() => auth.loading && !serverSync().data.provider_auth[props.provider])
-  const methods = createMemo(() => auth.latest ?? serverSync().data.provider_auth[props.provider] ?? fallback())
-  const cachedMethods = serverSync().data.provider_auth[props.provider]
-  const directMethod =
-    cachedMethods?.length === 1 && cachedMethods[0].type === "api" && !cachedMethods[0].prompts?.length ? 0 : undefined
+  const loading = createMemo(() => integration.loading)
+  const methods = createMemo<ConnectMethod[]>(() => {
+    const values = integration.latest?.methods.filter(
+      (method): method is ConnectMethod => method.type === "key" || method.type === "oauth",
+    )
+    return values?.length ? values : fallback()
+  })
   const [store, setStore] = createStore({
-    methodIndex: directMethod as undefined | number,
-    authorization: undefined as undefined | ProviderAuthAuthorization,
+    methodIndex: undefined as undefined | number,
+    authorization: undefined as undefined | IntegrationOauthConnectOutput["data"],
     promptInputs: undefined as undefined | Record<string, string>,
-    state: (directMethod === undefined ? "pending" : undefined) as
-      | undefined
-      | "pending"
-      | "complete"
-      | "error"
-      | "prompt",
+    state: "pending" as undefined | "pending" | "complete" | "error" | "prompt",
     error: undefined as string | undefined,
   })
 
@@ -454,7 +451,7 @@ function ProviderConnection(props: {
     | { type: "auth.prompt" }
     | { type: "auth.inputs"; inputs: Record<string, string> }
     | { type: "auth.pending" }
-    | { type: "auth.complete"; authorization: ProviderAuthAuthorization }
+    | { type: "auth.complete"; authorization: IntegrationOauthConnectOutput["data"] }
     | { type: "auth.error"; error: string }
 
   function dispatch(action: Action) {
@@ -508,7 +505,7 @@ function ProviderConnection(props: {
 
   const methodLabel = (value?: { type?: string; label?: string }) => {
     if (!value) return ""
-    if (value.type === "api") return language.t("provider.connect.method.apiKey")
+    if (value.type === "key") return language.t("provider.connect.method.apiKey")
     return value.label ?? ""
   }
 
@@ -518,7 +515,7 @@ function ProviderConnection(props: {
     const hint = suffix?.[1]
     return {
       label: suffix ? label.slice(0, -suffix[0].length) : label,
-      hint: hint ? hint[0].toUpperCase() + hint.slice(1) : value?.type === "api" ? "Browser" : undefined,
+      hint: hint ? hint[0].toUpperCase() + hint.slice(1) : value?.type === "key" ? "Browser" : undefined,
     }
   }
 
@@ -549,46 +546,22 @@ function ProviderConnection(props: {
     const method = methods()[index]
     dispatch({ type: "method.select", index })
 
-    if (method.type === "api" && method.prompts?.length) {
-      if (!inputs) {
-        dispatch({ type: "auth.prompt" })
-        return
-      }
-      dispatch({ type: "auth.inputs", inputs })
-      return
-    }
-
     if (method.type === "oauth") {
       if (method.prompts?.length && !inputs) {
         dispatch({ type: "auth.prompt" })
         return
       }
       dispatch({ type: "auth.pending" })
-      const start = Date.now()
       await serverSDK()
-        .client.provider.oauth.authorize(
-          {
-            providerID: props.provider,
-            method: index,
-            inputs,
-          },
-          { throwOnError: true },
-        )
+        .api.integration.oauth.connect({
+          integrationID: props.provider,
+          methodID: method.id,
+          inputs: inputs ?? {},
+          location: location(),
+        })
         .then((x) => {
           if (!alive.value) return
-          const elapsed = Date.now() - start
-          const delay = 1000 - elapsed
-
-          if (delay > 0) {
-            if (timer.current !== undefined) clearTimeout(timer.current)
-            timer.current = setTimeout(() => {
-              timer.current = undefined
-              if (!alive.value) return
-              dispatch({ type: "auth.complete", authorization: x.data! })
-            }, delay)
-            return
-          }
-          dispatch({ type: "auth.complete", authorization: x.data! })
+          dispatch({ type: "auth.complete", authorization: x.data })
         })
         .catch((e) => {
           if (!alive.value) return
@@ -603,9 +576,9 @@ function ProviderConnection(props: {
       index: 0,
     })
 
-    const prompts = createMemo<NonNullable<ProviderAuthMethod["prompts"]>>(() => {
+    const prompts = createMemo(() => {
       const value = method()
-      return value?.prompts ?? []
+      return value?.type === "oauth" ? (value.prompts ?? []) : []
     })
     const matches = (prompt: NonNullable<ReturnType<typeof prompts>[number]>, value: Record<string, string>) => {
       if (!prompt.when) return true
@@ -636,10 +609,6 @@ function ProviderConnection(props: {
         setFormStore("index", next)
         return
       }
-      if (method()?.type === "api") {
-        dispatch({ type: "auth.inputs", inputs: value })
-        return
-      }
       await selectMethod(store.methodIndex, value)
     }
 
@@ -741,7 +710,10 @@ function ProviderConnection(props: {
   })
 
   async function complete() {
-    await serverSDK().client.global.dispose()
+    const value = directory()
+    await queryClient
+      .refetchQueries(serverSync().queryOptions.providers(value ? pathKey(value) : null))
+      .catch(() => undefined)
     dialog.close()
     showToast({
       variant: "success",
@@ -805,7 +777,7 @@ function ProviderConnection(props: {
               listRef = ref
             }}
             items={methods}
-            key={(m) => m?.label}
+            key={(m) => m?.label ?? m?.type}
             onSelect={async (selected, index) => {
               if (!selected) return
               void selectMethod(index)
@@ -851,13 +823,10 @@ function ProviderConnection(props: {
       }
 
       setFormStore("error", undefined)
-      await serverSDK().client.auth.set({
-        providerID: props.provider,
-        auth: {
-          type: "api",
-          key: apiKey,
-          ...(store.promptInputs ? { metadata: store.promptInputs } : {}),
-        },
+      await serverSDK().api.integration.connect.key({
+        integrationID: props.provider,
+        location: location(),
+        key: apiKey,
       })
       await complete()
     }
@@ -984,12 +953,13 @@ function ProviderConnection(props: {
 
       setFormStore("error", undefined)
       const result = await serverSDK()
-        .client.provider.oauth.callback({
-          providerID: props.provider,
-          method: store.methodIndex,
+        .api.integration.oauth.complete({
+          integrationID: props.provider,
+          attemptID: store.authorization!.attemptID,
+          location: location(),
           code,
         })
-        .then((value) => (value.error ? { ok: false as const, error: value.error } : { ok: true as const }))
+        .then(() => ({ ok: true as const }))
         .catch((error) => ({ ok: false as const, error }))
       if (result.ok) {
         await complete()
@@ -1076,25 +1046,37 @@ function ProviderConnection(props: {
     })
 
     onMount(() => {
-      void (async () => {
+      const poll = async () => {
+        const authorization = store.authorization
+        if (!authorization || !alive.value) return
         const result = await serverSDK()
-          .client.provider.oauth.callback({
-            providerID: props.provider,
-            method: store.methodIndex,
+          .api.integration.oauth.status({
+            integrationID: props.provider,
+            attemptID: authorization.attemptID,
+            location: location(),
           })
-          .then((value) => (value.error ? { ok: false as const, error: value.error } : { ok: true as const }))
+          .then((value) => ({ ok: true as const, status: value.data }))
           .catch((error) => ({ ok: false as const, error }))
-
         if (!alive.value) return
-
         if (!result.ok) {
-          const message = formatError(result.error, language.t("common.requestFailed"))
-          dispatch({ type: "auth.error", error: message })
+          dispatch({ type: "auth.error", error: formatError(result.error, language.t("common.requestFailed")) })
           return
         }
-
-        await complete()
-      })()
+        if (result.status.status === "complete") {
+          await complete()
+          return
+        }
+        if (result.status.status === "failed") {
+          dispatch({ type: "auth.error", error: result.status.message })
+          return
+        }
+        if (result.status.status === "expired") {
+          dispatch({ type: "auth.error", error: language.t("common.requestFailed") })
+          return
+        }
+        timer.current = setTimeout(poll, 1_000)
+      }
+      void poll()
     })
 
     return (
@@ -1178,15 +1160,15 @@ function ProviderConnection(props: {
                 </div>
               </div>
             </Match>
-            <Match when={method()?.type === "api"}>
+            <Match when={method()?.type === "key"}>
               <ApiAuthView />
             </Match>
             <Match when={method()?.type === "oauth"}>
               <Switch>
-                <Match when={store.authorization?.method === "code"}>
+                <Match when={store.authorization?.mode === "code"}>
                   <OAuthCodeView />
                 </Match>
-                <Match when={store.authorization?.method === "auto"}>
+                <Match when={store.authorization?.mode === "auto"}>
                   <OAuthAutoView />
                 </Match>
               </Switch>
diff --git a/packages/app/src/components/dialog-fork.tsx b/packages/app/src/components/dialog-fork.tsx
index 601f03084cea..5187d980ea26 100644
--- a/packages/app/src/components/dialog-fork.tsx
+++ b/packages/app/src/components/dialog-fork.tsx
@@ -69,15 +69,11 @@ export const DialogFork: Component = () => {
     const dir = base64Encode(sdk().directory)
 
     sdk()
-      .client.session.fork({ sessionID, messageID: item.id })
+      .api.session.fork({ sessionID, messageID: item.id })
       .then((forked) => {
-        if (!forked.data) {
-          showToast({ title: language.t("common.requestFailed") })
-          return
-        }
         dialog.close()
-        prompt.set(restored, undefined, { dir, id: forked.data.id })
-        navigate(`/${dir}/session/${forked.data.id}`)
+        prompt.set(restored, undefined, { dir, id: forked.id })
+        navigate(`/${dir}/session/${forked.id}`)
       })
       .catch((err: unknown) => {
         const message = err instanceof Error ? err.message : String(err)
diff --git a/packages/app/src/components/dialog-select-directory-v2.tsx b/packages/app/src/components/dialog-select-directory-v2.tsx
index 69d46ddcb62a..a457c9a2f5e5 100644
--- a/packages/app/src/components/dialog-select-directory-v2.tsx
+++ b/packages/app/src/components/dialog-select-directory-v2.tsx
@@ -28,6 +28,7 @@ import {
 } from "./directory-picker-domain"
 import "./dialog-select-directory-v2.css"
 import { DividerV2 } from "@opencode-ai/ui/v2/divider-v2"
+import { getFilename } from "@opencode-ai/core/util/path"
 
 interface DialogSelectDirectoryV2Props {
   title?: string
@@ -68,9 +69,8 @@ export function DialogSelectDirectoryV2(props: DialogSelectDirectoryV2Props) {
   const [fallbackPath] = createResource(
     () => (missingBase() ? true : undefined),
     () =>
-      sdk.client.path
+      sdk.api.path
         .get()
-        .then((result) => result.data)
         .catch(() => undefined),
     { initialValue: undefined },
   )
@@ -85,18 +85,26 @@ export function DialogSelectDirectoryV2(props: DialogSelectDirectoryV2Props) {
   )
   const search = createDirectorySearch({ sdk, home, base: () => root() || start() })
   const [suggestions] = createResource(input, async (value) => {
-    const typed = cleanPickerInput(value).replace(/\/+$/, "")
+    const cleaned = cleanPickerInput(value)
+    const typed = cleaned.replace(/\/+$/, "")
     const current = displayPickerPath(root(), value, home()).replace(/\/+$/, "")
-    if (!typed || typed === current) return { query: value, items: [] }
+    if (!cleaned || (root() && typed === current)) return { query: value, items: [] }
     const directories = (await search(value)).map((absolute) => ({ absolute, type: "directory" as const }))
     if (!policy.includeFiles) return { query: value, items: directories.slice(0, 5) }
-    const files = await sdk.client.find
-      .files({ directory: root(), query: pickerFileSearchQuery(root(), value, home()), type: "file", limit: 20 })
-      .then((result) => result.data ?? [])
+    const base = pickerRoot(cleaned) || root() || start()
+    if (!base) return { query: value, items: directories.slice(0, 5) }
+    const files = await sdk.api.file
+      .find({
+        location: { directory: base },
+        query: pickerFileSearchQuery(base, value, home()),
+        type: "file",
+        limit: 20,
+      })
+      .then((result) => result.data)
       .catch(() => [])
     const results = [
       ...directories,
-      ...files.map((path) => ({ absolute: absoluteTreePath(root(), path), type: "file" as const })),
+      ...files.map((entry) => ({ absolute: absoluteTreePath(base, entry.path), type: "file" as const })),
     ]
     return {
       query: value,
@@ -115,9 +123,14 @@ export function DialogSelectDirectoryV2(props: DialogSelectDirectoryV2Props) {
       existing ??
       loads.schedule(`${generation}:${key}`, eager ? "background" : "user", () => {
         if (!activeTreeNavigation(generation, navigation)) return Promise.resolve(undefined)
-        return sdk.client.file
-          .list({ directory: absolute, path: "" })
-          .then((result) => result.data ?? [])
+        return sdk.api.file
+          .list({ location: { directory: absolute } })
+          .then((result) =>
+            result.data.map((entry) => ({
+              name: getFilename(entry.path.replace(/[\\/]+$/, "")),
+              type: entry.type,
+            })),
+          )
           .catch(() => undefined)
       })
     listings.set(key, request)
diff --git a/packages/app/src/components/dialog-select-directory.tsx b/packages/app/src/components/dialog-select-directory.tsx
index 8ba09a9f9046..80ac070750da 100644
--- a/packages/app/src/components/dialog-select-directory.tsx
+++ b/packages/app/src/components/dialog-select-directory.tsx
@@ -60,9 +60,8 @@ export function DialogSelectDirectory(props: DialogSelectDirectoryProps) {
   const [fallbackPath] = createResource(
     () => (missingBase() ? true : undefined),
     async () => {
-      return sdk.client.path
+      return sdk.api.path
         .get()
-        .then((x) => x.data)
         .catch(() => undefined)
     },
     { initialValue: undefined },
diff --git a/packages/app/src/components/dialog-select-mcp.tsx b/packages/app/src/components/dialog-select-mcp.tsx
index 05253381f0c9..4f1a3cd2392c 100644
--- a/packages/app/src/components/dialog-select-mcp.tsx
+++ b/packages/app/src/components/dialog-select-mcp.tsx
@@ -43,7 +43,7 @@ export const DialogSelectMcp: Component = () => {
         filterKeys={["name", "status"]}
         sortBy={(a, b) => a.name.localeCompare(b.name)}
         onSelect={(x) => {
-          if (!x || toggle.isPending) return
+          if (!x || x.status === "pending" || toggle.isPending) return
           toggle.mutate(x.name)
         }}
       >
@@ -76,7 +76,7 @@ export const DialogSelectMcp: Component = () => {
               <div onClick={(e) => e.stopPropagation()}>
                 <Switch
                   checked={enabled()}
-                  disabled={toggle.isPending && toggle.variables === i.name}
+                  disabled={status() === "pending" || (toggle.isPending && toggle.variables === i.name)}
                   onChange={() => {
                     if (toggle.isPending) return
                     toggle.mutate(i.name)
diff --git a/packages/app/src/components/directory-picker-domain.test.ts b/packages/app/src/components/directory-picker-domain.test.ts
index 57464106106c..1bc9af08334c 100644
--- a/packages/app/src/components/directory-picker-domain.test.ts
+++ b/packages/app/src/components/directory-picker-domain.test.ts
@@ -133,10 +133,10 @@ test("scopes file autocomplete to the current browser root", () => {
 test("resolves directory autocomplete from the current browser root", async () => {
   const directories: string[] = []
   const sdk = {
-    client: {
-      find: {
-        files: (input: { directory: string }) => {
-          directories.push(input.directory)
+    api: {
+      file: {
+        find: (input: { location?: { directory?: string } }) => {
+          directories.push(input.location?.directory ?? "")
           return Promise.resolve({ data: [] })
         },
       },
@@ -152,6 +152,29 @@ test("resolves directory autocomplete from the current browser root", async () =
   expect(directories).toEqual(["/repo", "/repo/src"])
 })
 
+test("searches from an absolute root without a default base", async () => {
+  const directories: string[] = []
+  const sdk = {
+    api: {
+      file: {
+        list: (input: { location?: { directory?: string } }) => {
+          directories.push(input.location?.directory ?? "")
+          return Promise.resolve({
+            data: [
+              { path: "Users/", type: "directory" },
+              { path: "tmp/", type: "directory" },
+            ],
+          })
+        },
+      },
+    },
+  } as unknown as Parameters<typeof createDirectorySearch>[0]["sdk"]
+  const search = createDirectorySearch({ sdk, home: () => "", base: () => undefined })
+
+  expect(await search("/")).toEqual(["/Users", "/tmp"])
+  expect(directories).toEqual(["/"])
+})
+
 test("identifies the next directory level to preload", () => {
   expect(
     preloadTreeDirectories("src/", [
diff --git a/packages/app/src/components/directory-picker-domain.ts b/packages/app/src/components/directory-picker-domain.ts
index 9900265962ea..9539ae1d01dc 100644
--- a/packages/app/src/components/directory-picker-domain.ts
+++ b/packages/app/src/components/directory-picker-domain.ts
@@ -326,15 +326,15 @@ export function createDirectorySearch(args: { sdk: ServerSDK; base: () => string
   let current = 0
 
   const scoped = (value: string) => {
+    const raw = normalizePickerDrive(value)
+    const root = pickerRoot(raw)
+    if (root) return { directory: trimPickerPath(root), path: raw.slice(root.length) }
     const base = args.base()
     if (!base) return
-    const raw = normalizePickerDrive(value)
     if (!raw) return { directory: trimPickerPath(base), path: "" }
     const home = args.home()
     if (raw === "~") return { directory: trimPickerPath(home || base), path: "" }
     if (raw.startsWith("~/")) return { directory: trimPickerPath(home || base), path: raw.slice(2) }
-    const root = pickerRoot(raw)
-    if (root) return { directory: trimPickerPath(root), path: raw.slice(root.length) }
     return { directory: trimPickerPath(base), path: raw }
   }
 
@@ -342,14 +342,17 @@ export function createDirectorySearch(args: { sdk: ServerSDK; base: () => string
     const key = trimPickerPath(directory)
     const existing = cache.get(key)
     if (existing) return existing
-    const request = args.sdk.client.file
-      .list({ directory: key, path: "" })
-      .then((result) => result.data ?? [])
+    const request = args.sdk.api.file
+      .list({ location: { directory: key } })
+      .then((result) => result.data)
       .catch(() => [])
       .then((nodes) =>
         nodes
           .filter((node) => node.type === "directory")
-          .map((node) => ({ name: node.name, absolute: trimPickerPath(normalizePickerDrive(node.absolute)) })),
+          .map((node) => {
+            const relative = trimPickerPath(normalizePickerDrive(node.path))
+            return { name: getFilename(relative), absolute: joinPickerPath(key, relative) }
+          }),
       )
     cache.set(key, request)
     return request
@@ -371,9 +374,9 @@ export function createDirectorySearch(args: { sdk: ServerSDK; base: () => string
     const pathInput = raw.startsWith("~") || !!pickerRoot(raw) || raw.includes("/")
     const query = normalizePickerDrive(input.path)
     if (!pathInput) {
-      const results = await args.sdk.client.find
-        .files({ directory: input.directory, query, type: "directory", limit: 50 })
-        .then((result) => result.data ?? [])
+      const results = await args.sdk.api.file
+        .find({ location: { directory: input.directory }, query, type: "directory", limit: 50 })
+        .then((result) => result.data.map((entry) => entry.path))
         .catch(() => [])
       if (!active()) return []
       return results.map((path) => joinPickerPath(input.directory, path)).slice(0, 50)
diff --git a/packages/app/src/components/edit-project.ts b/packages/app/src/components/edit-project.ts
index 3ec999da0639..42053f6eff81 100644
--- a/packages/app/src/components/edit-project.ts
+++ b/packages/app/src/components/edit-project.ts
@@ -1,6 +1,7 @@
 import { getFilename } from "@opencode-ai/core/util/path"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { useMutation } from "@tanstack/solid-query"
+import { normalizeProjectInfo } from "@/context/global-sync/utils"
 import { createMemo } from "solid-js"
 import { createStore } from "solid-js/store"
 import { useGlobal } from "@/context/global"
@@ -70,13 +71,15 @@ export function createEditProjectModel(props: { project: LocalProject; server: S
       const start = store.startup.trim()
 
       if (props.project.id && props.project.id !== "global") {
-        await serverCtx().sdk.client.project.update({
+        const project = await serverCtx().sdk.api.project.update({
           projectID: props.project.id,
-          directory: props.project.worktree,
           name,
           icon: { color: store.color || "", override: store.iconOverride || "" },
           commands: { start },
         })
+        serverCtx().sync.set("project", (items) =>
+          items.map((item) => (item.id === project.id ? normalizeProjectInfo(project) : item)),
+        )
         serverCtx().sync.project.icon(props.project.worktree, store.iconOverride || undefined)
         dialog.close()
         return
diff --git a/packages/app/src/components/prompt-input-v2.tsx b/packages/app/src/components/prompt-input-v2.tsx
index 921d8ff45c16..13df57bec2b4 100644
--- a/packages/app/src/components/prompt-input-v2.tsx
+++ b/packages/app/src/components/prompt-input-v2.tsx
@@ -310,7 +310,7 @@ export function usePromptInputV2Controller(props: PromptInputV2ControllerProps):
   )
   const resources = createMemo(() =>
     Object.values(sync().data.mcp_resource).map((resource) => ({
-      id: `resource:${resource.client}:${resource.uri}`,
+      id: `resource:${resource.server}:${resource.uri}`,
       kind: "resource" as const,
       label: `@${resource.name}`,
       path: resource.uri,
@@ -327,7 +327,7 @@ export function usePromptInputV2Controller(props: PromptInputV2ControllerProps):
         source: {
           type: "resource" as const,
           text: { value: `@${resource.name}`, start: 0, end: resource.name.length + 1 },
-          clientName: resource.client,
+          clientName: resource.server,
           uri: resource.uri,
         },
       },
diff --git a/packages/app/src/components/prompt-input.tsx b/packages/app/src/components/prompt-input.tsx
index bcc5acc0bb72..3842b087914e 100644
--- a/packages/app/src/components/prompt-input.tsx
+++ b/packages/app/src/components/prompt-input.tsx
@@ -591,7 +591,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
         type: "resource",
         name: resource.name,
         uri: resource.uri,
-        client: resource.client,
+        client: resource.server,
         display: resource.name,
         description: resource.description,
         mime: resource.mimeType,
diff --git a/packages/app/src/components/prompt-input/submit.test.ts b/packages/app/src/components/prompt-input/submit.test.ts
index f563a509822a..ac0691646451 100644
--- a/packages/app/src/components/prompt-input/submit.test.ts
+++ b/packages/app/src/components/prompt-input/submit.test.ts
@@ -7,6 +7,11 @@ let createPromptSubmit: typeof import("./submit").createPromptSubmit
 
 const createdClients: string[] = []
 const createdSessions: string[] = []
+const sessionCreateInputs: Array<{
+  agent?: string
+  model?: { id: string; providerID: string; variant?: string }
+  location?: { directory: string }
+}> = []
 const enabledAutoAccept: Array<{ server: string; sessionID: string; directory: string }> = []
 const optimistic: Array<{
   directory?: string
@@ -20,9 +25,14 @@ const optimistic: Array<{
 const optimisticSeeded: boolean[] = []
 const storedSessions: Record<string, Array<{ id: string; title?: string }>> = {}
 const promoted: Array<{ directory: string; sessionID: string }> = []
-const sentShell: string[] = []
+const sentShell: Array<{ sessionID: string; id?: string; command: string }> = []
 const syncedDirectories: string[] = []
 const promotedDrafts: Array<{ draftID: string; server: string; sessionId: string }> = []
+const sentPrompts: string[] = []
+const promptInputs: unknown[] = []
+const sentCommands: unknown[] = []
+const commands: Array<{ name: string }> = []
+let serverSessionSyncs = 0
 
 let params: { id?: string } = {}
 let search: { draftId?: string } = {}
@@ -31,7 +41,7 @@ let variant: string | undefined
 let permissionServer = "server-a"
 let createSessionGate: Promise<void> | undefined
 
-const promptValue: Prompt = [{ type: "text", content: "ls", start: 0, end: 2 }]
+let promptValue: Prompt = [{ type: "text", content: "ls", start: 0, end: 2 }]
 const [promptStore, setPromptStore] = createStore<PromptStore>({
   prompt: promptValue,
   cursor: 0,
@@ -63,23 +73,39 @@ const prompt = {
 const clientFor = (directory: string) => {
   createdClients.push(directory)
   return {
-    session: {
-      create: async () => {
-        await createSessionGate
-        createdSessions.push(directory)
-        return {
-          data: {
+    api: {
+      session: {
+        create: async (input: (typeof sessionCreateInputs)[number]) => {
+          await createSessionGate
+          const location = input.location?.directory ?? directory
+          createdSessions.push(location)
+          sessionCreateInputs.push(input)
+          return {
             id: `session-${createdSessions.length}`,
+            projectID: "project",
+            agent: input.agent,
+            model: input.model,
+            cost: 0,
+            tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+            time: { created: 1, updated: 1 },
             title: `New session ${createdSessions.length}`,
-          },
-        }
-      },
-      shell: async () => {
-        sentShell.push(directory)
-        return { data: undefined }
+            location: { directory: location },
+          }
+        },
+        prompt: async (input: unknown) => {
+          sentPrompts.push(directory)
+          promptInputs.push(input)
+          return { data: undefined }
+        },
+        command: async (input: unknown) => {
+          sentCommands.push(input)
+        },
+        shell: async (input: { sessionID: string; id?: string; command: string }) => {
+          sentShell.push(input)
+        },
       },
-      prompt: async () => ({ data: undefined }),
-      promptAsync: async () => ({ data: undefined }),
+    },
+    session: {
       command: async () => ({ data: undefined }),
       abort: async () => ({ data: undefined }),
     },
@@ -172,6 +198,7 @@ beforeAll(async () => {
         scope: "local",
         directory: "/repo/main",
         client: rootClient,
+        api: rootClient.api,
         url: "http://localhost:4096",
         createClient(opts: any) {
           return clientFor(opts.directory)
@@ -183,7 +210,7 @@ beforeAll(async () => {
 
   mock.module("@/context/sync", () => ({
     useSync: () => () => ({
-      data: { command: [] },
+      data: { command: commands },
       session: {
         optimistic: {
           add: (value: {
@@ -210,6 +237,9 @@ beforeAll(async () => {
       session: {
         remember: () => undefined,
         set: () => undefined,
+        sync: async () => {
+          serverSessionSyncs++
+        },
       },
       child: (directory: string) => {
         syncedDirectories.push(directory)
@@ -251,11 +281,17 @@ beforeAll(async () => {
 beforeEach(() => {
   createdClients.length = 0
   createdSessions.length = 0
+  sessionCreateInputs.length = 0
   enabledAutoAccept.length = 0
   optimistic.length = 0
   optimisticSeeded.length = 0
   promoted.length = 0
   promotedDrafts.length = 0
+  sentPrompts.length = 0
+  promptInputs.length = 0
+  sentCommands.length = 0
+  commands.length = 0
+  promptValue = [{ type: "text", content: "ls", start: 0, end: 2 }]
   params = {}
   search = {}
   sentShell.length = 0
@@ -264,6 +300,7 @@ beforeEach(() => {
   variant = undefined
   permissionServer = "server-a"
   createSessionGate = undefined
+  serverSessionSyncs = 0
   for (const key of Object.keys(storedSessions)) delete storedSessions[key]
 })
 
@@ -297,8 +334,24 @@ describe("prompt submit worktree selection", () => {
 
     expect(createdClients).toEqual(["/repo/worktree-a", "/repo/worktree-b"])
     expect(createdSessions).toEqual(["/repo/worktree-a", "/repo/worktree-b"])
-    expect(sentShell).toEqual(["/repo/worktree-a", "/repo/worktree-b"])
+    expect(sessionCreateInputs).toEqual([
+      {
+        agent: "agent",
+        model: { id: "model", providerID: "provider", variant: undefined },
+        location: { directory: "/repo/worktree-a" },
+      },
+      {
+        agent: "agent",
+        model: { id: "model", providerID: "provider", variant: undefined },
+        location: { directory: "/repo/worktree-b" },
+      },
+    ])
+    expect(sentShell).toEqual([
+      expect.objectContaining({ sessionID: "session-1", id: expect.stringMatching(/^evt_/), command: "ls" }),
+      expect.objectContaining({ sessionID: "session-2", id: expect.stringMatching(/^evt_/), command: "ls" }),
+    ])
     expect(syncedDirectories).toEqual(["/repo/worktree-a", "/repo/worktree-a", "/repo/worktree-b", "/repo/worktree-b"])
+    expect(serverSessionSyncs).toBe(0)
     expect(promoted).toEqual([
       { directory: "/repo/worktree-a", sessionID: "session-1" },
       { directory: "/repo/worktree-b", sessionID: "session-2" },
@@ -419,6 +472,7 @@ describe("prompt submit worktree selection", () => {
     const event = { preventDefault: () => undefined } as unknown as Event
 
     await submit.handleSubmit(event)
+    await Bun.sleep(0)
 
     expect(optimistic).toHaveLength(1)
     expect(optimistic[0]).toMatchObject({
@@ -427,6 +481,53 @@ describe("prompt submit worktree selection", () => {
         model: { providerID: "provider", modelID: "model", variant: "high" },
       },
     })
+    expect(sentPrompts).toEqual(["/repo/main"])
+    expect(promptInputs[0]).toMatchObject({
+      sessionID: "session-1",
+      text: "ls",
+      files: [],
+      agents: [],
+    })
+    expect((promptInputs[0] as { id?: string }).id).toStartWith("msg_")
+  })
+
+  test("submits slash commands through the current session API", async () => {
+    params = { id: "session-1" }
+    variant = "high"
+    commands.push({ name: "review" })
+    promptValue = [{ type: "text", content: "/review staged changes", start: 0, end: 22 }]
+
+    const submit = createPromptSubmit({
+      prompt,
+      info: () => ({ id: "session-1" }),
+      imageAttachments: () => [],
+      commentCount: () => 0,
+      autoAccept: () => false,
+      mode: () => "normal",
+      working: () => false,
+      editor: () => undefined,
+      queueScroll: () => undefined,
+      promptLength: (value) => value.reduce((sum, part) => sum + ("content" in part ? part.content.length : 0), 0),
+      addToHistory: () => undefined,
+      resetHistoryNavigation: () => undefined,
+      setMode: () => undefined,
+      setPopover: () => undefined,
+    })
+
+    await submit.handleSubmit({ preventDefault: () => undefined } as unknown as Event)
+
+    expect(sentCommands).toEqual([
+      {
+        sessionID: "session-1",
+        id: expect.stringMatching(/^msg_/),
+        command: "review",
+        arguments: "staged changes",
+        agent: "agent",
+        model: { id: "model", providerID: "provider", variant: "high" },
+        files: [],
+      },
+    ])
+    expect(serverSessionSyncs).toBe(0)
   })
 
   test("uses an injected model selection", async () => {
@@ -487,7 +588,8 @@ describe("prompt submit worktree selection", () => {
 
     await submit.handleSubmit(event)
 
-    expect(storedSessions["/repo/worktree-a"]).toEqual([{ id: "session-1", title: "New session 1" }])
+    expect(storedSessions["/repo/worktree-a"]).toHaveLength(1)
+    expect(storedSessions["/repo/worktree-a"]?.[0]).toMatchObject({ id: "session-1", title: "New session 1" })
     expect(optimisticSeeded).toEqual([true])
   })
 })
diff --git a/packages/app/src/components/prompt-input/submit.ts b/packages/app/src/components/prompt-input/submit.ts
index 203722fc6c74..2cd30da3ef94 100644
--- a/packages/app/src/components/prompt-input/submit.ts
+++ b/packages/app/src/components/prompt-input/submit.ts
@@ -20,6 +20,8 @@ import { setCursorPosition } from "./editor-dom"
 import { formatServerError } from "@/utils/server-errors"
 import { ScopedKey } from "@/utils/server-scope"
 import { createPromptSubmissionState } from "./submission-state"
+import { normalizeSessionInfo } from "@/utils/session"
+import { Event } from "@opencode-ai/schema/event"
 
 type PendingPrompt = {
   abort: AbortController
@@ -39,7 +41,7 @@ export type FollowupDraft = {
 }
 
 type FollowupSendInput = {
-  client: DirectorySDK["client"]
+  api: DirectorySDK["api"]["session"]
   serverSync: ServerSync
   sync: DirectorySync
   draft: FollowupDraft
@@ -81,19 +83,21 @@ export async function sendFollowupDraft(input: FollowupSendInput) {
         return false
       }
 
-      await input.client.session.command({
+      const messageID = Identifier.ascending("message")
+      await input.api.command({
         sessionID: input.draft.sessionID,
+        id: messageID,
         command: cmd,
         arguments: tail.join(" "),
         agent: input.draft.agent,
-        model: `${input.draft.model.providerID}/${input.draft.model.modelID}`,
-        variant: input.draft.variant,
-        parts: images.map((attachment) => ({
-          id: Identifier.ascending("part"),
-          type: "file" as const,
-          mime: attachment.mime,
-          url: attachment.dataUrl,
-          filename: attachment.filename,
+        model: {
+          id: input.draft.model.modelID,
+          providerID: input.draft.model.providerID,
+          variant: input.draft.variant,
+        },
+        files: images.map((attachment) => ({
+          uri: attachment.dataUrl,
+          name: attachment.filename,
         })),
       })
       return true
@@ -152,13 +156,36 @@ export async function sendFollowupDraft(input: FollowupSendInput) {
       return false
     }
 
-    await input.client.session.promptAsync({
+    await input.api.prompt({
       sessionID: input.draft.sessionID,
+      id: messageID,
       agent: input.draft.agent,
       model: input.draft.model,
-      messageID,
-      parts: requestParts,
       variant: input.draft.variant,
+      text: requestParts.flatMap((part) => (part.type === "text" ? [part.text] : [])).join("\n"),
+      files: requestParts.flatMap((part) => {
+        if (part.type !== "file") return []
+        const text = part.source?.text
+        return [
+          {
+            uri: part.url,
+            name: part.filename,
+            mention: text ? { start: text.start, end: text.end, text: text.value } : undefined,
+          },
+        ]
+      }),
+      agents: requestParts.flatMap((part) =>
+        part.type === "agent"
+          ? [
+              {
+                name: part.name,
+                mention: part.source
+                  ? { start: part.source.start, end: part.source.end, text: part.source.value }
+                  : undefined,
+              },
+            ]
+          : [],
+      ),
     })
     return true
   } catch (err) {
@@ -210,6 +237,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
   const pendingKey = (sessionID: string) => ScopedKey.from(sdk().scope, sessionID)
 
   const errorMessage = (err: unknown) => {
+    if (err && typeof err === "object" && "message" in err && typeof err.message === "string") return err.message
     if (err && typeof err === "object" && "data" in err) {
       const data = (err as { data?: { message?: string } }).data
       if (data?.message) return data.message
@@ -235,9 +263,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
       return Promise.resolve()
     }
     return sdk()
-      .client.session.abort({
-        sessionID,
-      })
+      .api.session.interrupt({ sessionID })
       .catch(() => {})
   }
 
@@ -364,9 +390,13 @@ export function createPromptSubmit(input: PromptSubmitInput) {
 
     let session = input.info()
     if (!session && isNewSession) {
-      const created = await client.session
-        .create()
-        .then((x) => x.data ?? undefined)
+      const created = await sdk()
+        .api.session.create({
+          agent: currentAgent.name,
+          model: { id: currentModel.id, providerID: currentModel.provider.id, variant },
+          location: { directory: sessionDirectory },
+        })
+        .then(normalizeSessionInfo)
         .catch((err) => {
           showToast({
             title: language.t("prompt.toast.sessionCreateFailed.title"),
@@ -450,12 +480,14 @@ export function createPromptSubmit(input: PromptSubmitInput) {
 
     if (mode === "shell") {
       clearInput()
-      client.session
-        .shell({
+      const eventID = Event.ID.create()
+      sdk()
+        .api.session.shell({
           sessionID: session.id,
+          id: eventID,
+          command: text,
           agent,
           model,
-          command: text,
         })
         .catch((err) => {
           showToast({
@@ -473,23 +505,23 @@ export function createPromptSubmit(input: PromptSubmitInput) {
       const customCommand = sync().data.command.find((c) => c.name === commandName)
       if (customCommand) {
         clearInput()
-        client.session
-          .command({
+        const messageID = Identifier.ascending("message")
+        serverSync().session.set("session_status", session.id, { type: "busy" })
+        sdk()
+          .api.session.command({
             sessionID: session.id,
+            id: messageID,
             command: commandName,
             arguments: args.join(" "),
             agent,
-            model: `${model.providerID}/${model.modelID}`,
-            variant,
-            parts: images.map((attachment) => ({
-              id: Identifier.ascending("part"),
-              type: "file" as const,
-              mime: attachment.mime,
-              url: attachment.dataUrl,
-              filename: attachment.filename,
+            model: { id: model.modelID, providerID: model.providerID, variant },
+            files: images.map((attachment) => ({
+              uri: attachment.dataUrl,
+              name: attachment.filename,
             })),
           })
           .catch((err) => {
+            serverSync().session.set("session_status", session.id, { type: "idle" })
             showToast({
               title: language.t("prompt.toast.commandSendFailed.title"),
               description: formatServerError(err, language.t, language.t("common.requestFailed")),
@@ -573,7 +605,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
     }
 
     void sendFollowupDraft({
-      client,
+      api: sdk().api.session,
       sync: sync(),
       serverSync: serverSync(),
       draft,
diff --git a/packages/app/src/components/settings-general.tsx b/packages/app/src/components/settings-general.tsx
index 3beb97225a4e..1b6cc9b3c0b4 100644
--- a/packages/app/src/components/settings-general.tsx
+++ b/packages/app/src/components/settings-general.tsx
@@ -129,8 +129,8 @@ export const SettingsGeneral: Component = () => {
   const [shells] = createResource(
     () =>
       serverSdk()
-        .client.pty.shells()
-        .then((res) => res.data ?? [])
+        .api.pty.shells()
+        .then((res) => res.data)
         .catch(() => [] as ShellOption[]),
     { initialValue: [] as ShellOption[] },
   )
diff --git a/packages/app/src/components/settings-v2/general.tsx b/packages/app/src/components/settings-v2/general.tsx
index ed2328c89aa5..2607ece3173c 100644
--- a/packages/app/src/components/settings-v2/general.tsx
+++ b/packages/app/src/components/settings-v2/general.tsx
@@ -124,8 +124,8 @@ export const SettingsGeneralV2: Component<{
   const [shells] = createResource(
     () =>
       serverSdk()
-        .client.pty.shells()
-        .then((res) => res.data ?? [])
+        .api.pty.shells()
+        .then((res) => res.data)
         .catch(() => [] as ShellOption[]),
     { initialValue: [] as ShellOption[] },
   )
diff --git a/packages/app/src/components/status-popover-indicator.test.ts b/packages/app/src/components/status-popover-indicator.test.ts
index e3c62d2a9520..c1c57b9d7082 100644
--- a/packages/app/src/components/status-popover-indicator.test.ts
+++ b/packages/app/src/components/status-popover-indicator.test.ts
@@ -26,7 +26,7 @@ describe("hasNonBlockingServiceIssue", () => {
     expect(hasNonBlockingServiceIssue({ mcp: ["failed"], lsp: [] })).toBe(true)
     expect(hasNonBlockingServiceIssue({ mcp: ["needs_auth"], lsp: [] })).toBe(true)
     expect(hasNonBlockingServiceIssue({ mcp: ["needs_client_registration"], lsp: [] })).toBe(true)
-    expect(hasNonBlockingServiceIssue({ mcp: ["connected", "disabled"], lsp: [] })).toBe(false)
+    expect(hasNonBlockingServiceIssue({ mcp: ["connected", "pending", "disabled"], lsp: [] })).toBe(false)
   })
 
   test("detects LSP failures that do not block chatting", () => {
diff --git a/packages/app/src/components/status-popover-indicator.ts b/packages/app/src/components/status-popover-indicator.ts
index efb7473753e8..d89f90febbf6 100644
--- a/packages/app/src/components/status-popover-indicator.ts
+++ b/packages/app/src/components/status-popover-indicator.ts
@@ -1,11 +1,12 @@
-import type { LspStatus, McpStatus } from "@opencode-ai/sdk/v2/client"
+import type { LspStatus } from "@opencode-ai/sdk/v2/client"
+import type { McpServer } from "@opencode-ai/client/promise"
 
 export function hasNonBlockingServiceIssue(input: {
-  mcp: Array<McpStatus["status"]>
+  mcp: Array<McpServer["status"]["status"]>
   lsp: Array<LspStatus["status"]>
 }) {
   return (
-    input.mcp.some((status) => status !== "connected" && status !== "disabled") ||
+    input.mcp.some((status) => status !== "connected" && status !== "pending" && status !== "disabled") ||
     input.lsp.some((status) => status === "error")
   )
 }
diff --git a/packages/app/src/components/terminal.tsx b/packages/app/src/components/terminal.tsx
index c512e782c496..70fa6a2eb9e3 100644
--- a/packages/app/src/components/terminal.tsx
+++ b/packages/app/src/components/terminal.tsx
@@ -11,7 +11,6 @@ import { matchKeybind, parseKeybind } from "@/context/command"
 import { useLanguage } from "@/context/language"
 import { usePlatform } from "@/context/platform"
 import { useSDK } from "@/context/sdk"
-import { useServerSDK } from "@/context/server-sdk"
 import { terminalFontFamily, useSettings } from "@/context/settings"
 import type { LocalPTY } from "@/context/terminal"
 import { disposeIfDisposable, getHoveredLinkText, setOptionIfSupported } from "@/utils/runtime-adapters"
@@ -176,15 +175,9 @@ export const Terminal = (props: TerminalProps) => {
   const theme = useTheme()
   const language = useLanguage()
   // Terminal captures its connection for the PTY lifetime, so callers must key it per server/session.
-  const connection = useServerSDK()().server
   const directory = sdk().directory
-  const client = sdk().client
+  const client = sdk().api.pty
   const url = sdk().url
-  const auth = connection.http
-  const username = auth?.username ?? "opencode"
-  const password = auth?.password ?? ""
-  const authToken = connection.type === "http" ? connection.authToken : false
-  const sameOrigin = new URL(url, location.href).origin === location.origin
   let container!: HTMLDivElement
   const [local, others] = splitProps(props, [
     "pty",
@@ -242,9 +235,10 @@ export const Terminal = (props: TerminalProps) => {
   }
 
   const pushSize = (cols: number, rows: number) => {
-    return client.pty
+    return client
       .update({
         ptyID: id,
+        location: { directory },
         size: { cols, rows },
       })
       .catch((err) => {
@@ -523,33 +517,29 @@ export const Terminal = (props: TerminalProps) => {
       }
 
       const gone = () =>
-        client.pty
-          .get({ ptyID: id }, { throwOnError: false })
-          .then((result) => result.response.status === 404)
+        client
+          .get({ ptyID: id, location: { directory } })
+          .then((result) => result.data.status === "exited")
           .catch((err) => {
+            if (err && typeof err === "object" && "_tag" in err && err._tag === "PtyNotFoundError") return true
             debugTerminal("failed to inspect terminal session", err)
             return false
           })
 
       const connectToken = async () => {
-        const result = await client.pty
-          .connectToken(
-            { ptyID: id, directory },
-            {
-              throwOnError: false,
-              headers: { "x-opencode-ticket": "1" },
-            },
-          )
+        return client
+          .connectToken({
+            ptyID: id,
+            location: { directory },
+            "x-opencode-ticket": "1",
+          })
+          .then((result) => result.data.ticket)
           .catch((err: unknown) => {
-            if (err instanceof Error && err.message.includes("Request is not supported")) return
+            if (err && typeof err === "object" && "_tag" in err && err._tag === "ForbiddenError") {
+              throw new Error("PTY connect ticket rejected by origin or CSRF checks. Check the server CORS config.")
+            }
             throw err
           })
-        if (!result) return
-        if (result.response.status === 200 && result.data?.ticket) return result.data.ticket
-        if (result.response.status === 404 || result.response.status === 405) return
-        if (result.response.status === 403)
-          throw new Error("PTY connect ticket rejected by origin or CSRF checks. Check the server CORS config.")
-        throw new Error(`PTY connect ticket failed with ${result.response.status}`)
       }
 
       const retry = (err: unknown) => {
@@ -579,7 +569,7 @@ export const Terminal = (props: TerminalProps) => {
           fail(err)
           return undefined
         })
-        if (once.value) return
+        if (!ticket || once.value) return
         if (disposed) return
 
         const socket = new WebSocket(
@@ -589,10 +579,6 @@ export const Terminal = (props: TerminalProps) => {
             directory,
             cursor: seek,
             ticket,
-            sameOrigin,
-            username,
-            password,
-            authToken,
           }),
         )
         socket.binaryType = "arraybuffer"
diff --git a/packages/app/src/components/titlebar-tab-nav.tsx b/packages/app/src/components/titlebar-tab-nav.tsx
index a397046f9b3e..3058e6881af7 100644
--- a/packages/app/src/components/titlebar-tab-nav.tsx
+++ b/packages/app/src/components/titlebar-tab-nav.tsx
@@ -120,8 +120,7 @@ export function TabNavItem(props: {
     const ctx = serverCtx()
     const session = props.session()
     if (!ctx || !session) return
-    const client = ctx.sdk.createClient({ directory: session.directory, throwOnError: true })
-    await client.session.update({ sessionID: session.id, title })
+    await ctx.sdk.api.session.rename({ sessionID: session.id, title })
   }
 
   const closeRename = async (save: boolean) => {
diff --git a/packages/app/src/components/titlebar.tsx b/packages/app/src/components/titlebar.tsx
index 45786561077a..aa2f220e4949 100644
--- a/packages/app/src/components/titlebar.tsx
+++ b/packages/app/src/components/titlebar.tsx
@@ -28,6 +28,7 @@ import { tabKey, useTabs } from "@/context/tabs"
 import type { PromptSession } from "@/context/prompt"
 import "./titlebar.css"
 import { newTabTooltipKeybind } from "./command-tooltip-keybind"
+import { normalizeSessionInfo } from "@/utils/session"
 
 type TauriDesktopWindow = {
   startDragging?: () => Promise<void>
@@ -267,9 +268,9 @@ export function Titlebar(props: { update?: TitlebarUpdate; debugTools?: { visibl
                 return conn ? { route, sdk: global.ensureServerCtx(conn).sdk } : undefined
               },
               ({ route, sdk }) =>
-                sdk.client.session
+                sdk.api.session
                   .get({ sessionID: route.sessionId })
-                  .then((x) => x.data)
+                  .then(normalizeSessionInfo)
                   .catch(() => {}),
             )
 
diff --git a/packages/app/src/context/directory-sync.ts b/packages/app/src/context/directory-sync.ts
index 68e6b19cef14..ca6df85a53ad 100644
--- a/packages/app/src/context/directory-sync.ts
+++ b/packages/app/src/context/directory-sync.ts
@@ -5,6 +5,7 @@ import { produce, reconcile, type SetStoreFunction } from "solid-js/store"
 import type { createServerSdkContext } from "./server-sdk"
 import type { createServerSyncContextInner } from "./server-sync"
 import type { State } from "./global-sync/types"
+import { normalizeSessionInfo } from "@/utils/session"
 
 const cmp = (a: string, b: string) => (a < b ? -1 : a > b ? 1 : 0)
 const sessionFields = new Set([
@@ -15,6 +16,7 @@ const sessionFields = new Set([
   "permission",
   "question",
   "message",
+  "session_message",
   "part",
   "part_text_accum_delta",
 ])
@@ -114,7 +116,6 @@ export const createDirSyncContext = (
         await serverSync.session.sync(sessionID, options)
         index(sessionID)
       },
-      diff: serverSync.session.diff,
       todo: serverSync.session.todo,
       history: serverSync.session.history,
       evict(sessionID: string) {
@@ -123,9 +124,9 @@ export const createDirSyncContext = (
       fetch: async (count = 10) => {
         const [store, setStore] = current()
         setStore("limit", (value) => value + count)
-        const response = await client.session.list()
-        const sessions = (response.data ?? [])
-          .filter((session) => !!session?.id)
+        const response = await serverSDK.api.session.list({ directory, limit: store.limit, order: "desc" })
+        const sessions = response.data
+          .map(normalizeSessionInfo)
           .sort((a, b) => cmp(a.id, b.id))
           .slice(0, store.limit)
         sessions.forEach(serverSync.session.remember)
@@ -133,7 +134,7 @@ export const createDirSyncContext = (
       },
       more: createMemo(() => current()[0].session.length >= current()[0].limit),
       archive: async (sessionID: string) => {
-        await serverSDK.client.session.update({ sessionID, time: { archived: Date.now() } })
+        await serverSDK.api.session.archive({ sessionID, directory })
         current()[1](
           "session",
           produce((draft) => {
diff --git a/packages/app/src/context/file.tsx b/packages/app/src/context/file.tsx
index 6032b81dde70..fbbef3a2a8e7 100644
--- a/packages/app/src/context/file.tsx
+++ b/packages/app/src/context/file.tsx
@@ -204,10 +204,18 @@ export const { use: useFile, provider: FileProvider } = createSimpleContext({
     }
 
     const search = (query: string, dirs: "true" | "false", options?: { limit?: number; signal?: AbortSignal }) =>
-      sdk()
-        .client.find.files({ query, dirs, limit: options?.limit }, { signal: options?.signal })
+      serverSDK()
+        .api.file.find(
+          {
+            location: { directory: sdk().directory },
+            query,
+            type: dirs === "true" ? "directory" : "file",
+            limit: options?.limit,
+          },
+          { signal: options?.signal },
+        )
         .then(
-          (x) => (x.data ?? []).map(path.normalize),
+          (x) => x.data.map((entry) => path.normalize(entry.path)),
           (error) => {
             if (options?.signal?.aborted) throw error
             return []
diff --git a/packages/app/src/context/global-sync/bootstrap.test.ts b/packages/app/src/context/global-sync/bootstrap.test.ts
index 40735fb822c0..dceab47d8667 100644
--- a/packages/app/src/context/global-sync/bootstrap.test.ts
+++ b/packages/app/src/context/global-sync/bootstrap.test.ts
@@ -1,14 +1,39 @@
 import { describe, expect, test } from "bun:test"
 import { createStore } from "solid-js/store"
 import { QueryClient } from "@tanstack/solid-query"
-import type { Config, OpencodeClient, Project, Session } from "@opencode-ai/sdk/v2/client"
+import type { Config, OpencodeClient, Project } from "@opencode-ai/sdk/v2/client"
+import type { AgentApi, CatalogApi, CommandApi, ProjectApi, ReferenceApi } from "@opencode-ai/client/promise"
 import type { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
-import { bootstrapDirectory, loadPathQuery, loadProvidersQuery } from "./bootstrap"
+import {
+  bootstrapDirectory,
+  loadAgentsQuery,
+  loadCommands,
+  loadPathQuery,
+  loadProjectsQuery,
+  loadProvidersQuery,
+  loadReferencesQuery,
+} from "./bootstrap"
 import type { State, VcsCache } from "./types"
-import { createServerSession } from "../server-session"
 import { ServerScope } from "@/utils/server-scope"
+import type { ServerApi } from "@/utils/server"
 
 const provider = { all: new Map(), connected: [], default: {} } satisfies NormalizedProviderListResponse
+const api = {
+  agent: { list: async () => ({ location: {}, data: [] }) },
+  provider: { list: async () => ({ location: {}, data: [] }) },
+  model: {
+    list: async () => ({ location: {}, data: [] }),
+    default: async () => ({ location: {}, data: null }),
+  },
+  permission: { request: { list: async () => ({ location: {}, data: [] }) } },
+  project: {
+    list: async () => [],
+    current: async () => ({ id: "project", directory: "/project" }),
+  },
+  question: { request: { list: async () => ({ location: {}, data: [] }) } },
+  reference: { list: async () => ({ location: {}, data: [] }) },
+  vcs: { get: async () => ({ location: {}, data: {} }) },
+} as unknown as ServerApi
 
 function directoryState() {
   return createStore<State>({
@@ -41,6 +66,7 @@ function directoryState() {
     vcs: undefined,
     limit: 5,
     message: {},
+    session_message: {},
     part: {},
     part_text_accum_delta: {},
   })
@@ -64,7 +90,6 @@ describe("bootstrapDirectory", () => {
       sdk: {
         app: { agents: async () => ({ data: [{ name: "build", mode: "primary" }] }) },
         config: { get: async () => ({ data: {} }) },
-        session: { status: async () => ({ data: {} }) },
         vcs: { get: async () => ({ data: undefined }) },
         command: {
           list: async () => {
@@ -83,6 +108,7 @@ describe("bootstrapDirectory", () => {
         },
         provider: { list: async () => ({ data: { all: [], connected: [], default: {} } }) },
       } as unknown as OpencodeClient,
+      api,
       store,
       setStore,
       vcsCache: { setStore() {} } as unknown as VcsCache,
@@ -99,78 +125,108 @@ describe("bootstrapDirectory", () => {
     expect(mcpReads).toEqual([])
   })
 
-  test("seeds session status even while warming session info stalls", async () => {
-    const [store, setStore] = directoryState()
-    const stalled = Promise.withResolvers<never>()
-    const client = {
-      app: { agents: async () => ({ data: [{ name: "build", mode: "primary" }] }) },
-      config: { get: async () => ({ data: {} }) },
-      session: {
-        status: async () => ({ data: { ses_busy: { type: "busy" } } }),
-        get: () => stalled.promise,
-      },
-      vcs: { get: async () => ({ data: undefined }) },
-      command: { list: async () => ({ data: [] }) },
-      permission: { list: async () => ({ data: [] }) },
-      question: { list: async () => ({ data: [] }) },
-      v2: { reference: { list: async () => ({ data: { data: [] } }) } },
-      mcp: { status: async () => ({ data: {} }) },
-      provider: { list: async () => ({ data: { all: [], connected: [], default: {} } }) },
-    } as unknown as OpencodeClient
-    const session = createServerSession(client)
-    const stale: Session = {
-      id: "ses_stale",
-      slug: "ses_stale",
-      projectID: "project",
-      directory: "/project",
-      title: "stale",
-      version: "1",
-      time: { created: 1, updated: 1 },
-    }
-    session.remember(stale)
-    session.set("session_status", stale.id, { type: "busy" })
-
-    await bootstrapDirectory({
-      directory: "/project",
-      scope: ServerScope.local,
-      mcp: false,
-      global: {
-        config: {} satisfies Config,
-        path: { state: "", config: "", worktree: "/project", directory: "/project", home: "/home" },
-        project: [{ id: "project", worktree: "/project" } as Project],
-        provider,
-      },
-      sdk: client,
-      store,
-      setStore,
-      vcsCache: { setStore() {} } as unknown as VcsCache,
-      loadSessions() {},
-      translate: (key) => key,
-      queryClient: new QueryClient(),
-      session,
-    })
-
-    const deadline = Date.now() + 500
-    while (!session.data.session_working("ses_busy") && Date.now() < deadline) {
-      await new Promise((resolve) => setTimeout(resolve, 10))
-    }
-
-    expect(session.data.session_status["ses_busy"]?.type).toBe("busy")
-    expect(session.data.session_status[stale.id]).toBeUndefined()
-  })
 })
 
 describe("query keys", () => {
   test("partitions identical directories by server scope", () => {
-    const client = {} as OpencodeClient
+    const client = {} as Parameters<typeof loadPathQuery>[2]
+    const api = {} as CatalogApi
     const remote = "https://debian.example" as typeof ServerScope.local
 
     expect([...loadPathQuery(ServerScope.local, "/repo", client).queryKey]).toEqual(["local", "/repo", "path"])
     expect([...loadPathQuery(remote, "/repo", client).queryKey]).toEqual(["https://debian.example", "/repo", "path"])
-    expect([...loadProvidersQuery(remote, null, client).queryKey]).toEqual([
-      "https://debian.example",
-      null,
-      "providers",
+    expect([...loadProvidersQuery(remote, null, api).queryKey]).toEqual(["https://debian.example", null, "providers"])
+  })
+
+  test("loads the current provider and model catalog", async () => {
+    const calls: unknown[] = []
+    const api = {
+      provider: {
+        list: async (input: unknown) => {
+          calls.push(["provider", input])
+          return { location: {}, data: [{ id: "openai", name: "OpenAI", package: "@ai-sdk/openai" }] }
+        },
+      },
+      model: {
+        list: async (input: unknown) => {
+          calls.push(["model", input])
+          return { location: {}, data: [] }
+        },
+        default: async (input: unknown) => {
+          calls.push(["default", input])
+          return { location: {}, data: null }
+        },
+      },
+    } as unknown as CatalogApi
+
+    const result = await new QueryClient().fetchQuery(loadProvidersQuery(ServerScope.local, "/repo", api))
+
+    expect(calls).toEqual([
+      ["provider", { location: { directory: "/repo" } }],
+      ["model", { location: { directory: "/repo" } }],
+      ["default", { location: { directory: "/repo" } }],
     ])
+    expect(result.connected).toEqual(["openai"])
+  })
+
+  test("loads agents from the current location-scoped endpoint", async () => {
+    const calls: unknown[] = []
+    const api = {
+      list: async (input: unknown) => {
+        calls.push(input)
+        return { location: {}, data: [] }
+      },
+    } as unknown as AgentApi
+
+    const result = await new QueryClient().fetchQuery(loadAgentsQuery(ServerScope.local, "/repo", api))
+
+    expect(calls).toEqual([{ location: { directory: "/repo" } }])
+    expect(result).toEqual([])
+  })
+
+  test("loads commands from the current location-scoped endpoint", async () => {
+    const calls: unknown[] = []
+    const api = {
+      list: async (input: unknown) => {
+        calls.push(input)
+        return {
+          location: {},
+          data: [{ name: "review", template: "Review files", source: "command" as const }],
+        }
+      },
+    } as unknown as CommandApi
+
+    const result = await loadCommands("/repo", api)
+
+    expect(calls).toEqual([{ location: { directory: "/repo" } }])
+    expect(result).toEqual([{ name: "review", template: "Review files", source: "command" }])
+  })
+
+  test("loads projects from the current endpoint", async () => {
+    const api = {
+      list: async () => [
+        { id: "b", worktree: "/b", time: { created: 1, updated: 1 }, sandboxes: [] },
+        { id: "a", worktree: "/a", time: { created: 1, updated: 1 }, sandboxes: [] },
+      ],
+    } as unknown as ProjectApi
+
+    const result = await new QueryClient().fetchQuery(loadProjectsQuery(ServerScope.local, api))
+
+    expect(result.map((project) => project.id)).toEqual(["a", "b"])
+  })
+
+  test("loads references from the current location-scoped endpoint", async () => {
+    const calls: unknown[] = []
+    const api = {
+      list: async (input: unknown) => {
+        calls.push(input)
+        return { location: {}, data: [{ name: "AGENTS.md", path: "/repo/AGENTS.md", source: "instructions" }] }
+      },
+    } as unknown as ReferenceApi
+
+    const result = await new QueryClient().fetchQuery(loadReferencesQuery(ServerScope.local, "/repo", api))
+
+    expect(calls).toEqual([{ location: { directory: "/repo" } }])
+    expect(result).toHaveLength(1)
   })
 })
diff --git a/packages/app/src/context/global-sync/bootstrap.ts b/packages/app/src/context/global-sync/bootstrap.ts
index c63b702522f5..4c527a958036 100644
--- a/packages/app/src/context/global-sync/bootstrap.ts
+++ b/packages/app/src/context/global-sync/bootstrap.ts
@@ -9,6 +9,26 @@ import type {
   ReferenceInfo,
   Session,
 } from "@opencode-ai/sdk/v2/client"
+import type {
+  AgentListInput,
+  AgentListOutput,
+  CatalogApi,
+  CommandInfo,
+  CommandListInput,
+  CommandListOutput,
+  McpApi,
+  PathGetInput,
+  PathGetOutput,
+  PermissionApi,
+  ProjectCurrentInput,
+  ProjectCurrentOutput,
+  ProjectListOutput,
+  QuestionApi,
+  ReferenceListInput,
+  ReferenceListOutput,
+  SessionApi,
+  VcsApi,
+} from "@opencode-ai/client/promise"
 import { showToast } from "@/utils/toast"
 import { getFilename } from "@opencode-ai/core/util/path"
 import { retry } from "@opencode-ai/core/util/retry"
@@ -16,12 +36,20 @@ import { batch } from "solid-js"
 import { produce, reconcile, type SetStoreFunction, type Store } from "solid-js/store"
 import type { State, VcsCache } from "./types"
 import type { ServerSession } from "../server-session"
-import { cmp, normalizeAgentList, normalizeProviderList } from "./utils"
+import {
+  cmp,
+  normalizeAgentList,
+  normalizePermissionRequest,
+  normalizeProjectInfo,
+  normalizeProviderList,
+} from "./utils"
 import { formatServerError } from "@/utils/server-errors"
 import { QueryClient, queryOptions } from "@tanstack/solid-query"
 import { loadMcpQuery, loadMcpResourcesQuery } from "../server-sync"
 import { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 import { ScopedKey, type ServerScope } from "@/utils/server-scope"
+import { normalizeSessionInfo } from "@/utils/session"
+import type { ServerProtocol } from "@/utils/server-protocol"
 
 type GlobalStore = {
   ready: boolean
@@ -88,15 +116,25 @@ export const loadGlobalConfigQuery = (scope: ServerScope, sdk: OpencodeClient) =
     queryFn: () => retry(() => sdk.global.config.get().then((x) => x.data!)),
   })
 
-export const loadProjectsQuery = (scope: ServerScope, sdk: OpencodeClient) =>
+type ProjectApi = {
+  readonly list: () => Promise<ProjectListOutput>
+  readonly current: (input?: ProjectCurrentInput) => Promise<ProjectCurrentOutput>
+}
+
+type PathApi = {
+  readonly get: (input?: PathGetInput) => Promise<PathGetOutput>
+}
+
+export const loadProjectsQuery = (scope: ServerScope, api: ProjectApi) =>
   queryOptions({
     queryKey: [scope, "project"],
     queryFn: () =>
       retry(() =>
-        sdk.project.list().then((x) => {
-          return (x.data ?? [])
+        api.list().then((projects) => {
+          return projects
             .filter((p) => !!p?.id)
             .filter((p) => !!p.worktree && !p.worktree.includes("opencode-test"))
+            .map(normalizeProjectInfo)
             .slice()
             .sort((a, b) => cmp(a.id, b.id))
         }),
@@ -105,6 +143,8 @@ export const loadProjectsQuery = (scope: ServerScope, sdk: OpencodeClient) =>
 
 export async function bootstrapGlobal(input: {
   serverSDK: OpencodeClient
+  serverAPI: CatalogApi & { readonly path: PathApi; readonly project: ProjectApi }
+  protocol?: Promise<ServerProtocol>
   scope: ServerScope
   requestFailedTitle: string
   translate: (key: string, vars?: Record<string, string | number>) => string
@@ -114,11 +154,14 @@ export async function bootstrapGlobal(input: {
 }) {
   const slow = [
     () => input.queryClient.fetchQuery(loadGlobalConfigQuery(input.scope, input.serverSDK)),
-    () => input.queryClient.fetchQuery(loadProvidersQuery(input.scope, null, input.serverSDK)),
-    () => input.queryClient.fetchQuery(loadPathQuery(input.scope, null, input.serverSDK)),
+    () =>
+      input.queryClient.fetchQuery(
+        loadProvidersQuery(input.scope, null, input.serverAPI, input.serverSDK, input.protocol),
+      ),
+    () => input.queryClient.fetchQuery(loadPathQuery(input.scope, null, input.serverAPI.path)),
     () =>
       input.queryClient
-        .fetchQuery(loadProjectsQuery(input.scope, input.serverSDK))
+        .fetchQuery(loadProjectsQuery(input.scope, input.serverAPI.project))
         .then((data) => input.setGlobalStore("project", data)),
   ]
   await runAll(slow)
@@ -162,44 +205,117 @@ function warmSessions(input: {
   ids: string[]
   store: Store<State>
   setStore: SetStoreFunction<State>
-  sdk: OpencodeClient
+  api: SessionApi
 }) {
   const known = new Set(input.store.session.map((item) => item.id))
   const ids = [...new Set(input.ids)].filter((id) => !!id && !known.has(id))
   if (ids.length === 0) return Promise.resolve()
   return Promise.all(
     ids.map((sessionID) =>
-      retry(() => input.sdk.session.get({ sessionID })).then((x) => {
-        const session = x.data
-        if (!session?.id) return
-        mergeSession(input.setStore, session)
-      }),
+      retry(() => input.api.get({ sessionID })).then((session) =>
+        mergeSession(input.setStore, normalizeSessionInfo(session)),
+      ),
     ),
   ).then(() => undefined)
 }
 
-export const loadProvidersQuery = (scope: ServerScope, directory: string | null, sdk: OpencodeClient) =>
+export const loadProvidersQuery = (
+  scope: ServerScope,
+  directory: string | null,
+  sdk: CatalogApi,
+  legacy?: OpencodeClient,
+  protocol?: Promise<ServerProtocol>,
+) =>
   queryOptions({
     queryKey: [scope, directory, "providers"],
-    queryFn: () => retry(() => sdk.provider.list().then((x) => normalizeProviderList(x.data!))),
+    queryFn: () =>
+      retry(async () => {
+        if ((await protocol) === "v1" && legacy) {
+          const result = await legacy.provider.list()
+          return normalizeProviderList(result.data!)
+        }
+        const location = directory ? { location: { directory } } : undefined
+        const [providers, models, defaultModel] = await Promise.all([
+          sdk.provider.list(location),
+          sdk.model.list(location),
+          sdk.model.default(location),
+        ])
+        return normalizeProviderList(providers.data, models.data, defaultModel.data)
+      }),
   })
 
-export const loadAgentsQuery = (scope: ServerScope, directory: string | null, sdk: OpencodeClient) =>
+type AgentListApi = {
+  readonly list: (input?: AgentListInput) => Promise<AgentListOutput>
+}
+
+type CommandListApi = {
+  readonly list: (input?: CommandListInput) => Promise<CommandListOutput>
+}
+
+type ReferenceListApi = {
+  readonly list: (input?: ReferenceListInput) => Promise<ReferenceListOutput>
+}
+
+export const loadAgentsQuery = (
+  scope: ServerScope,
+  directory: string,
+  sdk: AgentListApi,
+  legacy?: OpencodeClient,
+  protocol?: Promise<ServerProtocol>,
+) =>
   queryOptions({
     queryKey: [scope, directory, "agents"],
-    queryFn: () => retry(() => sdk.app.agents().then((x) => normalizeAgentList(x.data))),
+    queryFn: () =>
+      retry(async () => {
+        if ((await protocol) === "v1" && legacy) return normalizeAgentList((await legacy.app.agents()).data ?? [])
+        return sdk.list({ location: { directory } }).then((result) => normalizeAgentList(result.data))
+      }),
   })
 
-export const loadPathQuery = (scope: ServerScope, directory: string | null, sdk: OpencodeClient) =>
+export const loadCommands = (
+  directory: string,
+  api: CommandListApi,
+  legacy?: OpencodeClient,
+  protocol?: Promise<ServerProtocol>,
+): Promise<CommandInfo[]> =>
+  retry(async () => {
+    if ((await protocol) === "v1" && legacy) {
+      return ((await legacy.command.list()).data ?? []).map((command) => {
+        const [providerID, id] = command.model?.split("/") ?? []
+        return {
+          name: command.name,
+          template: command.template,
+          description: command.description,
+          agent: command.agent,
+          model: providerID && id ? { providerID, id } : undefined,
+          subtask: command.subtask,
+          source: command.source === "skill" ? undefined : command.source,
+        }
+      })
+    }
+    return api.list({ location: { directory } }).then((result) => result.data)
+  })
+
+export const loadPathQuery = (scope: ServerScope, directory: string | null, api: PathApi) =>
   queryOptions<Path>({
     queryKey: [scope, directory, "path"],
-    queryFn: () => retry(() => sdk.path.get().then((x) => x.data!)),
+    queryFn: () => retry(() => api.get(directory ? { location: { directory } } : undefined)),
   })
 
-export const loadReferencesQuery = (scope: ServerScope, directory: string, sdk: OpencodeClient) =>
+export const loadReferencesQuery = (
+  scope: ServerScope,
+  directory: string,
+  api: ReferenceListApi,
+  legacy?: OpencodeClient,
+  protocol?: Promise<ServerProtocol>,
+) =>
   queryOptions<ReferenceInfo[]>({
     queryKey: [scope, directory, "references"] as const,
-    queryFn: () => retry(() => sdk.v2.reference.list().then((x) => x.data?.data ?? [])).catch(() => []),
+    queryFn: () =>
+      retry(async () => {
+        if ((await protocol) === "v1" && legacy) return (await legacy.v2.reference.list()).data?.data ?? []
+        return api.list({ location: { directory } }).then((result) => result.data)
+      }).catch(() => []),
     placeholderData: [],
   })
 
@@ -208,6 +324,18 @@ export async function bootstrapDirectory(input: {
   scope: ServerScope
   mcp: boolean
   sdk: OpencodeClient
+  api: CatalogApi & {
+    readonly agent: AgentListApi
+    readonly command: CommandListApi
+    readonly mcp: McpApi
+    readonly path: PathApi
+    readonly permission: PermissionApi
+    readonly project: ProjectApi
+    readonly question: QuestionApi
+    readonly reference: ReferenceListApi
+    readonly session: SessionApi
+    readonly vcs: VcsApi
+  }
   store: Store<State>
   setStore: SetStoreFunction<State>
   vcsCache: VcsCache
@@ -221,6 +349,7 @@ export async function bootstrapDirectory(input: {
   }
   queryClient: QueryClient
   session?: ServerSession
+  protocol?: Promise<ServerProtocol>
 }) {
   const loading = input.store.status !== "complete"
   const seededProject = projectID(input.directory, input.global.project)
@@ -240,66 +369,55 @@ export async function bootstrapDirectory(input: {
       () => Promise.resolve(input.loadSessions(input.directory)),
       () =>
         input.queryClient
-          .ensureQueryData(loadAgentsQuery(input.scope, input.directory, input.sdk))
+          .ensureQueryData(loadAgentsQuery(input.scope, input.directory, input.api.agent, input.sdk, input.protocol))
           .then((data) => input.setStore("agent", data)),
       () =>
         retry(() => input.sdk.config.get().then((x) => input.setStore("config", reconcile(x.data!, { merge: false })))),
-      () =>
-        retry(() =>
-          input.sdk.session.status().then(async (x) => {
-            if (!input.session) {
-              input.setStore("session_status", x.data!)
-              return
-            }
-            const statuses = x.data ?? {}
-            input.session.set(
-              "session_status",
-              produce((draft) => {
-                for (const sessionID of Object.keys(draft)) {
-                  if (statuses[sessionID]) continue
-                  if (input.session?.get(sessionID)?.directory === input.directory) delete draft[sessionID]
-                }
-              }),
-            )
-            for (const [sessionID, status] of Object.entries(statuses)) {
-              input.session.set("session_status", sessionID, reconcile(status))
-            }
-            // Warm session info only after seeding statuses so a stalled session
-            // fetch cannot park busy indicators behind it, mirroring how live
-            // session.status events apply first and resolve info in the background.
-            await Promise.all(
-              Object.keys(statuses).map((sessionID) => input.session!.resolve(sessionID).catch(() => undefined)),
-            )
-          }),
-        ),
       !seededProject &&
-        (() => retry(() => input.sdk.project.current()).then((x) => input.setStore("project", x.data!.id))),
+        (() =>
+          retry(() => input.api.project.current({ location: { directory: input.directory } })).then((project) =>
+            input.setStore("project", project.id),
+          )),
       !seededPath &&
         (() =>
-          input.queryClient.ensureQueryData(loadPathQuery(input.scope, input.directory, input.sdk)).then((data) => {
-            const next = projectID(data.directory ?? input.directory, input.global.project)
-            if (next) input.setStore("project", next)
-          })),
+          input.queryClient
+            .ensureQueryData(loadPathQuery(input.scope, input.directory, input.api.path))
+            .then((data) => {
+              const next = projectID(data.directory ?? input.directory, input.global.project)
+              if (next) input.setStore("project", next)
+            })),
       () =>
         retry(() =>
-          input.sdk.vcs.get().then((x) => {
-            const next = x.data ?? input.store.vcs
+          input.api.vcs.get({ location: { directory: input.directory } }).then((result) => {
+            const next = { branch: result.data.branch, default_branch: result.data.defaultBranch }
             input.setStore("vcs", next)
             if (next) input.vcsCache.setStore("value", next)
           }),
         ),
-      input.mcp && (() => retry(() => input.sdk.command.list().then((x) => input.setStore("command", x.data ?? [])))),
-      () => input.queryClient.fetchQuery(loadReferencesQuery(input.scope, input.directory, input.sdk)),
+      input.mcp &&
+        (() =>
+          loadCommands(input.directory, input.api.command, input.sdk, input.protocol).then((commands) =>
+            input.setStore("command", commands),
+          )),
+      () =>
+        input.queryClient.fetchQuery(
+          loadReferencesQuery(input.scope, input.directory, input.api.reference, input.sdk, input.protocol),
+        ),
       () =>
         retry(() =>
-          input.sdk.permission.list().then((x) => {
-            const ids = (x.data ?? []).map((perm) => perm?.sessionID).filter((id): id is string => !!id)
+          (async () => {
+            if ((await input.protocol) === "v1") return (await input.sdk.permission.list()).data ?? []
+            return input.api.permission.request
+              .list({ location: { directory: input.directory } })
+              .then((result) => result.data.map(normalizePermissionRequest))
+          })().then((permissions) => {
+            const ids = permissions.map((permission) => permission.sessionID)
             const grouped = groupBySession(
-              (x.data ?? []).filter((perm): perm is PermissionRequest => !!perm?.id && !!perm.sessionID),
+              permissions.filter((permission) => !!permission.id && !!permission.sessionID),
             )
             const warm = input.session
               ? Promise.all(ids.map((sessionID) => input.session!.resolve(sessionID))).then(() => undefined)
-              : warmSessions({ ids, store: input.store, setStore: input.setStore, sdk: input.sdk })
+              : warmSessions({ ids, store: input.store, setStore: input.setStore, api: input.api.session })
             return warm.then(() =>
               batch(() => {
                 const current = input.session?.data.permission ?? input.store.permission
@@ -323,12 +441,19 @@ export async function bootstrapDirectory(input: {
         ),
       () =>
         retry(() =>
-          input.sdk.question.list().then((x) => {
-            const ids = (x.data ?? []).map((question) => question?.sessionID).filter((id): id is string => !!id)
-            const grouped = groupBySession((x.data ?? []).filter((q): q is QuestionRequest => !!q?.id && !!q.sessionID))
+          (async () => {
+            if ((await input.protocol) === "v1") return (await input.sdk.question.list()).data ?? []
+            return input.api.question.request
+              .list({ location: { directory: input.directory } })
+              .then((result) => result.data)
+          })().then((questions) => {
+            const ids = questions.map((question) => question.sessionID)
+            const grouped = groupBySession(
+              questions.filter((question) => !!question.id && !!question.sessionID) as QuestionRequest[],
+            )
             const warm = input.session
               ? Promise.all(ids.map((sessionID) => input.session!.resolve(sessionID))).then(() => undefined)
-              : warmSessions({ ids, store: input.store, setStore: input.setStore, sdk: input.sdk })
+              : warmSessions({ ids, store: input.store, setStore: input.setStore, api: input.api.session })
             return warm.then(() =>
               batch(() => {
                 const current = input.session?.data.question ?? input.store.question
@@ -351,17 +476,20 @@ export async function bootstrapDirectory(input: {
           }),
         ),
       () => Promise.resolve(input.loadSessions(input.directory)),
-      input.mcp && (() => input.queryClient.fetchQuery(loadMcpQuery(input.scope, input.directory, input.sdk))),
-      input.mcp && (() => input.queryClient.fetchQuery(loadMcpResourcesQuery(input.scope, input.directory, input.sdk))),
+      input.mcp && (() => input.queryClient.fetchQuery(loadMcpQuery(input.scope, input.directory, input.api.mcp))),
+      input.mcp &&
+        (() => input.queryClient.fetchQuery(loadMcpResourcesQuery(input.scope, input.directory, input.api.mcp))),
       () =>
-        input.queryClient.fetchQuery(loadProvidersQuery(input.scope, input.directory, input.sdk)).catch((err) => {
-          const project = getFilename(input.directory)
-          showToast({
-            variant: "error",
-            title: input.translate("toast.project.reloadFailed.title", { project }),
-            description: formatServerError(err, input.translate),
-          })
-        }),
+        input.queryClient
+          .fetchQuery(loadProvidersQuery(input.scope, input.directory, input.api, input.sdk, input.protocol))
+          .catch((err) => {
+            const project = getFilename(input.directory)
+            showToast({
+              variant: "error",
+              title: input.translate("toast.project.reloadFailed.title", { project }),
+              description: formatServerError(err, input.translate),
+            })
+          }),
     ].filter(Boolean) as (() => Promise<any>)[]
 
     await waitForPaint()
diff --git a/packages/app/src/context/global-sync/child-store.ts b/packages/app/src/context/global-sync/child-store.ts
index b36973e7f029..4eaa785789fc 100644
--- a/packages/app/src/context/global-sync/child-store.ts
+++ b/packages/app/src/context/global-sync/child-store.ts
@@ -255,6 +255,7 @@ export function createChildStoreManager(input: {
             vcs: vcsStore.value,
             limit: 5,
             message: {},
+            session_message: {},
             part: {},
             part_text_accum_delta: {},
           })
diff --git a/packages/app/src/context/global-sync/event-reducer.test.ts b/packages/app/src/context/global-sync/event-reducer.test.ts
index fb58fc48322b..b53fb691b3cf 100644
--- a/packages/app/src/context/global-sync/event-reducer.test.ts
+++ b/packages/app/src/context/global-sync/event-reducer.test.ts
@@ -80,6 +80,7 @@ const baseState = (input: Partial<State> = {}) =>
     vcs: undefined,
     limit: 10,
     message: {},
+    session_message: {},
     part: {},
     part_text_accum_delta: {},
     ...input,
@@ -261,8 +262,8 @@ describe("applyDirectoryEvent", () => {
 
   test("cleans session caches when deleted and decrements only root totals", () => {
     const cases = [
-      { info: rootSession({ id: "ses_1" }), expectedTotal: 1 },
-      { info: rootSession({ id: "ses_2", parentID: "ses_1" }), expectedTotal: 2 },
+      { info: rootSession({ id: "ses_1" }), expectedTotal: 1, current: false },
+      { info: rootSession({ id: "ses_2", parentID: "ses_1" }), expectedTotal: 2, current: true },
     ]
 
     for (const item of cases) {
@@ -286,7 +287,10 @@ describe("applyDirectoryEvent", () => {
       )
 
       applyDirectoryEvent({
-        event: { type: "session.deleted", properties: { info: item.info } },
+        event: {
+          type: "session.deleted",
+          properties: item.current ? { sessionID: item.info.id } : { info: item.info },
+        },
         store,
         setStore,
         push() {},
diff --git a/packages/app/src/context/global-sync/event-reducer.ts b/packages/app/src/context/global-sync/event-reducer.ts
index b12df5eb5591..39ba22c59d51 100644
--- a/packages/app/src/context/global-sync/event-reducer.ts
+++ b/packages/app/src/context/global-sync/event-reducer.ts
@@ -8,9 +8,9 @@ import type {
   QuestionRequest,
   Session,
   SessionStatus,
-  SnapshotFileDiff,
   Todo,
 } from "@opencode-ai/sdk/v2/client"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import type { State, VcsCache } from "./types"
 import { trimSessions } from "./session-trim"
 import { dropSessionCaches } from "./session-cache"
@@ -171,8 +171,11 @@ export function applyDirectoryEvent(input: {
       break
     }
     case "session.deleted": {
-      const info = (event.properties as { info: Session }).info
-      const result = Binary.search(input.store.session, info.id, (s) => s.id)
+      const properties = event.properties as { sessionID?: string; info?: Session }
+      const sessionID = properties.info?.id ?? properties.sessionID
+      if (!sessionID) break
+      const result = Binary.search(input.store.session, sessionID, (s) => s.id)
+      const info = properties.info ?? (result.found ? input.store.session[result.index] : undefined)
       if (result.found) {
         input.setStore(
           "session",
@@ -181,14 +184,77 @@ export function applyDirectoryEvent(input: {
           }),
         )
       }
-      cleanupSessionCaches(input.setStore, info.id, input.setSessionTodo)
-      if (info.parentID) break
+      cleanupSessionCaches(input.setStore, sessionID, input.setSessionTodo)
+      if (info?.parentID) break
       input.setStore("sessionTotal", (value) => Math.max(0, value - 1))
       break
     }
+    case "session.renamed": {
+      const properties = event.properties as { sessionID: string; title: string }
+      const result = Binary.search(input.store.session, properties.sessionID, (session) => session.id)
+      if (!result.found) break
+      input.setStore("session", result.index, (session) => ({
+        ...session,
+        title: properties.title,
+        time: { ...session.time, updated: Date.now() },
+      }))
+      break
+    }
+    case "session.usage.updated": {
+      const properties = event.properties as Pick<Session, "cost" | "tokens"> & { sessionID: string }
+      const result = Binary.search(input.store.session, properties.sessionID, (session) => session.id)
+      if (!result.found) break
+      input.setStore("session", result.index, (session) => ({
+        ...session,
+        cost: properties.cost,
+        tokens: properties.tokens,
+      }))
+      break
+    }
+    case "session.archived": {
+      const properties = event.properties as { sessionID: string }
+      const result = Binary.search(input.store.session, properties.sessionID, (session) => session.id)
+      if (!result.found) break
+      const info = input.store.session[result.index]
+      input.setStore(
+        "session",
+        produce((draft) => void draft.splice(result.index, 1)),
+      )
+      cleanupSessionCaches(input.setStore, properties.sessionID)
+      if (!info?.parentID) input.setStore("sessionTotal", (value) => Math.max(0, value - 1))
+      break
+    }
+    case "session.moved": {
+      const properties = event.properties as {
+        sessionID: string
+        location: { directory: string; workspaceID?: string }
+        projectID?: string
+        subpath?: string
+      }
+      const result = Binary.search(input.store.session, properties.sessionID, (session) => session.id)
+      if (!result.found) break
+      if (properties.location.directory === input.directory) {
+        input.setStore("session", result.index, (session) => ({
+          ...session,
+          projectID: properties.projectID ?? session.projectID,
+          workspaceID: properties.location.workspaceID,
+          directory: properties.location.directory,
+          path: properties.subpath,
+          time: { ...session.time, updated: Date.now() },
+        }))
+        break
+      }
+      const info = input.store.session[result.index]
+      input.setStore(
+        "session",
+        produce((draft) => void draft.splice(result.index, 1)),
+      )
+      if (!info?.parentID) input.setStore("sessionTotal", (value) => Math.max(0, value - 1))
+      break
+    }
     case "session.diff": {
-      const props = event.properties as { sessionID: string; diff: SnapshotFileDiff[] }
-      input.setStore("session_diff", props.sessionID, reconcile(list(props.diff), { key: "file" }))
+      const props = event.properties as { sessionID: string; diff: FileDiffInfo[] }
+      input.setStore("session_diff", props.sessionID, reconcile(list(props.diff) as FileDiffInfo[], { key: "file" }))
       break
     }
     case "todo.updated": {
diff --git a/packages/app/src/context/global-sync/mcp.test.ts b/packages/app/src/context/global-sync/mcp.test.ts
index a292d23df94b..ebfd9738ee59 100644
--- a/packages/app/src/context/global-sync/mcp.test.ts
+++ b/packages/app/src/context/global-sync/mcp.test.ts
@@ -31,4 +31,24 @@ describe("toggleMcp", () => {
     await toggleMcp(input("disabled"))
     expect(calls).toEqual(["connect", "refresh"])
   })
+
+  test("does not toggle a server while its connection is pending", async () => {
+    const calls: string[] = []
+    await toggleMcp({
+      status: "pending",
+      connect: async () => {
+        calls.push("connect")
+      },
+      disconnect: async () => {
+        calls.push("disconnect")
+      },
+      authenticate: async () => {
+        calls.push("authenticate")
+      },
+      refresh: async () => {
+        calls.push("refresh")
+      },
+    })
+    expect(calls).toEqual([])
+  })
 })
diff --git a/packages/app/src/context/global-sync/mcp.ts b/packages/app/src/context/global-sync/mcp.ts
index 2eeb297b955a..cd91f396d0e4 100644
--- a/packages/app/src/context/global-sync/mcp.ts
+++ b/packages/app/src/context/global-sync/mcp.ts
@@ -1,12 +1,13 @@
-import type { McpStatus } from "@opencode-ai/sdk/v2/client"
+import type { McpServer } from "@opencode-ai/client/promise"
 
 export async function toggleMcp(input: {
-  status: McpStatus["status"]
+  status: McpServer["status"]["status"]
   connect: () => Promise<void>
   disconnect: () => Promise<void>
   authenticate: () => Promise<void>
   refresh: () => Promise<void>
 }) {
+  if (input.status === "pending") return
   await {
     connected: input.disconnect,
     needs_auth: input.authenticate,
diff --git a/packages/app/src/context/global-sync/session-cache.test.ts b/packages/app/src/context/global-sync/session-cache.test.ts
index 4b2be505eaa7..45fbe38abe73 100644
--- a/packages/app/src/context/global-sync/session-cache.test.ts
+++ b/packages/app/src/context/global-sync/session-cache.test.ts
@@ -1,13 +1,6 @@
 import { describe, expect, test } from "bun:test"
-import type {
-  Message,
-  Part,
-  PermissionRequest,
-  QuestionRequest,
-  SessionStatus,
-  SnapshotFileDiff,
-  Todo,
-} from "@opencode-ai/sdk/v2/client"
+import type { Message, Part, PermissionRequest, QuestionRequest, SessionStatus, Todo } from "@opencode-ai/sdk/v2/client"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import { dropSessionCaches, pickSessionCacheEvictions } from "./session-cache"
 
 const msg = (id: string, sessionID: string) =>
@@ -33,9 +26,10 @@ describe("app session cache", () => {
   test("dropSessionCaches clears orphaned parts without message rows", () => {
     const store: {
       session_status: Record<string, SessionStatus | undefined>
-      session_diff: Record<string, SnapshotFileDiff[] | undefined>
+      session_diff: Record<string, FileDiffInfo[] | undefined>
       todo: Record<string, Todo[] | undefined>
       message: Record<string, Message[] | undefined>
+      session_message: Record<string, never[] | undefined>
       part: Record<string, Part[] | undefined>
       permission: Record<string, PermissionRequest[] | undefined>
       question: Record<string, QuestionRequest[] | undefined>
@@ -45,6 +39,7 @@ describe("app session cache", () => {
       session_diff: { ses_1: [] },
       todo: { ses_1: [] as Todo[] },
       message: {},
+      session_message: {},
       part: { msg_1: [part("prt_1", "ses_1", "msg_1")] },
       permission: { ses_1: [] as PermissionRequest[] },
       question: { ses_1: [] as QuestionRequest[] },
@@ -67,9 +62,10 @@ describe("app session cache", () => {
     const m = msg("msg_1", "ses_1")
     const store: {
       session_status: Record<string, SessionStatus | undefined>
-      session_diff: Record<string, SnapshotFileDiff[] | undefined>
+      session_diff: Record<string, FileDiffInfo[] | undefined>
       todo: Record<string, Todo[] | undefined>
       message: Record<string, Message[] | undefined>
+      session_message: Record<string, never[] | undefined>
       part: Record<string, Part[] | undefined>
       permission: Record<string, PermissionRequest[] | undefined>
       question: Record<string, QuestionRequest[] | undefined>
@@ -79,6 +75,7 @@ describe("app session cache", () => {
       session_diff: {},
       todo: {},
       message: { ses_1: [m] },
+      session_message: {},
       part: { [m.id]: [part("prt_1", "ses_1", m.id)] },
       permission: {},
       question: {},
diff --git a/packages/app/src/context/global-sync/session-cache.ts b/packages/app/src/context/global-sync/session-cache.ts
index 05cdc8464380..7d684a5a1ab0 100644
--- a/packages/app/src/context/global-sync/session-cache.ts
+++ b/packages/app/src/context/global-sync/session-cache.ts
@@ -1,20 +1,15 @@
-import type {
-  Message,
-  Part,
-  PermissionRequest,
-  QuestionRequest,
-  SessionStatus,
-  SnapshotFileDiff,
-  Todo,
-} from "@opencode-ai/sdk/v2/client"
+import type { Message, Part, PermissionRequest, QuestionRequest, SessionStatus, Todo } from "@opencode-ai/sdk/v2/client"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
+import type { SessionMessageInfo } from "@opencode-ai/client/promise"
 
 export const SESSION_CACHE_LIMIT = 40
 
 type SessionCache = {
   session_status: Record<string, SessionStatus | undefined>
-  session_diff: Record<string, SnapshotFileDiff[] | undefined>
+  session_diff: Record<string, FileDiffInfo[] | undefined>
   todo: Record<string, Todo[] | undefined>
   message: Record<string, Message[] | undefined>
+  session_message: Record<string, SessionMessageInfo[] | undefined>
   part: Record<string, Part[] | undefined>
   permission: Record<string, PermissionRequest[] | undefined>
   question: Record<string, QuestionRequest[] | undefined>
@@ -37,6 +32,7 @@ export function dropSessionCaches(store: SessionCache, sessionIDs: Iterable<stri
   for (const sessionID of stale) {
     delete store.message[sessionID]
     delete store.todo[sessionID]
+    delete store.session_message[sessionID]
     delete store.session_diff[sessionID]
     delete store.session_status[sessionID]
     delete store.permission[sessionID]
diff --git a/packages/app/src/context/global-sync/session-load.ts b/packages/app/src/context/global-sync/session-load.ts
index 3693dcb460de..46d8ec6a0517 100644
--- a/packages/app/src/context/global-sync/session-load.ts
+++ b/packages/app/src/context/global-sync/session-load.ts
@@ -1,20 +1,28 @@
-import type { RootLoadArgs } from "./types"
+import type { SessionApi } from "@opencode-ai/client/promise"
+import { normalizeSessionInfo } from "@/utils/session"
+import type { OpencodeClient } from "@opencode-ai/sdk/v2/client"
 
-export async function loadRootSessionsWithFallback(input: RootLoadArgs) {
+export async function loadRootSessions(input: { api: Pick<SessionApi, "list">; directory: string; limit: number }) {
+  const result = await input.api.list({
+    directory: input.directory,
+    parentID: null,
+    limit: input.limit,
+    order: "desc",
+  })
+  return {
+    data: result.data.map(normalizeSessionInfo),
+    limit: input.limit,
+    limited: true,
+  } as const
+}
+
+export async function loadRootSessionsV1(input: { client: OpencodeClient; directory: string; limit: number }) {
   try {
-    const result = await input.list({ directory: input.directory, roots: true, limit: input.limit })
-    return {
-      data: result.data,
-      limit: input.limit,
-      limited: true,
-    } as const
+    const result = await input.client.session.list({ directory: input.directory, roots: true, limit: input.limit })
+    return { data: result.data, limit: input.limit, limited: true } as const
   } catch {
-    const result = await input.list({ directory: input.directory, roots: true })
-    return {
-      data: result.data,
-      limit: input.limit,
-      limited: false,
-    } as const
+    const result = await input.client.session.list({ directory: input.directory, roots: true })
+    return { data: result.data, limit: input.limit, limited: false } as const
   }
 }
 
diff --git a/packages/app/src/context/global-sync/types.ts b/packages/app/src/context/global-sync/types.ts
index 86b489cd090b..74191e10b079 100644
--- a/packages/app/src/context/global-sync/types.ts
+++ b/packages/app/src/context/global-sync/types.ts
@@ -1,10 +1,7 @@
 import type {
   Agent,
-  Command,
   Config,
   LspStatus,
-  McpResource,
-  McpStatus,
   Message,
   Part,
   Path,
@@ -13,11 +10,12 @@ import type {
   ReferenceInfo,
   Session,
   SessionStatus,
-  SnapshotFileDiff,
   Todo,
   VcsInfo,
 } from "@opencode-ai/sdk/v2/client"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
+import type { CommandInfo, McpResource, McpServer, SessionMessageInfo } from "@opencode-ai/client/promise"
 import type { Accessor } from "solid-js"
 import type { SetStoreFunction, Store } from "solid-js/store"
 
@@ -35,7 +33,7 @@ export type ProjectMeta = {
 export type State = {
   status: "loading" | "partial" | "complete"
   agent: Agent[]
-  command: Command[]
+  command: CommandInfo[]
   reference: ReferenceInfo[]
   project: string
   projectMeta: ProjectMeta | undefined
@@ -51,7 +49,7 @@ export type State = {
   }
   session_working(id: string): boolean
   session_diff: {
-    [sessionID: string]: SnapshotFileDiff[]
+    [sessionID: string]: FileDiffInfo[]
   }
   todo: {
     [sessionID: string]: Todo[]
@@ -64,7 +62,7 @@ export type State = {
   }
   mcp_ready: boolean
   mcp: {
-    [name: string]: McpStatus
+    [name: string]: McpServer["status"]
   }
   mcp_resource: {
     [key: string]: McpResource
@@ -76,6 +74,9 @@ export type State = {
   message: {
     [sessionID: string]: Message[]
   }
+  session_message: {
+    [sessionID: string]: SessionMessageInfo[]
+  }
   part: {
     [messageID: string]: Part[]
   }
@@ -128,18 +129,6 @@ export type DisposeCheck = {
   loadingSessions: boolean
 }
 
-export type RootLoadArgs = {
-  directory: string
-  limit: number
-  list: (query: { directory: string; roots: true; limit?: number }) => Promise<{ data?: Session[] }>
-}
-
-export type RootLoadResult = {
-  data?: Session[]
-  limit: number
-  limited: boolean
-}
-
 export const MAX_DIR_STORES = 30
 export const DIR_IDLE_TTL_MS = 20 * 60 * 1000
 export const SESSION_RECENT_WINDOW = 4 * 60 * 60 * 1000
diff --git a/packages/app/src/context/global-sync/utils.test.ts b/packages/app/src/context/global-sync/utils.test.ts
index 406c0f124ed8..83989244a0f1 100644
--- a/packages/app/src/context/global-sync/utils.test.ts
+++ b/packages/app/src/context/global-sync/utils.test.ts
@@ -1,36 +1,112 @@
 import { describe, expect, test } from "bun:test"
-import type { Agent } from "@opencode-ai/sdk/v2/client"
-import { directoryKey, normalizeAgentList } from "./utils"
-
-const agent = (name = "build") =>
-  ({
-    name,
-    mode: "primary",
-    permission: {},
-    options: {},
-  }) as Agent
+import type { AgentListOutput, ModelDefaultOutput, ModelListOutput, ProviderListOutput } from "@opencode-ai/client/promise"
+import { directoryKey, normalizeAgentList, normalizePermissionRequest, normalizeProviderList } from "./utils"
 
 describe("normalizeAgentList", () => {
-  test("keeps array payloads", () => {
-    expect(normalizeAgentList([agent("build"), agent("docs")])).toEqual([agent("build"), agent("docs")])
-  })
+  test("adapts current agents to the app agent shape", () => {
+    const result = normalizeAgentList([
+      {
+        id: "build",
+        name: "Build",
+        mode: "primary",
+        hidden: false,
+        color: "primary",
+        model: { id: "gpt-5", providerID: "openai", variant: "high" },
+        request: { settings: { temperature: 0.2, topP: 0.9 }, headers: {}, body: {} },
+        system: "Build software",
+        permissions: [{ action: "read", resource: "*", effect: "allow" }],
+      },
+    ] as AgentListOutput["data"])
 
-  test("wraps a single agent payload", () => {
-    expect(normalizeAgentList(agent("docs"))).toEqual([agent("docs")])
+    expect(result).toEqual([
+      {
+        name: "build",
+        description: undefined,
+        mode: "primary",
+        hidden: false,
+        temperature: 0.2,
+        topP: 0.9,
+        color: "primary",
+        permission: [{ permission: "read", pattern: "*", action: "allow" }],
+        model: { providerID: "openai", modelID: "gpt-5" },
+        variant: "high",
+        prompt: "Build software",
+        options: { temperature: 0.2, topP: 0.9 },
+        steps: undefined,
+      },
+    ])
   })
+})
 
-  test("extracts agents from keyed objects", () => {
+describe("normalizePermissionRequest", () => {
+  test("adapts the current permission request to app state", () => {
     expect(
-      normalizeAgentList({
-        build: agent("build"),
-        docs: agent("docs"),
+      normalizePermissionRequest({
+        id: "permission-1",
+        sessionID: "session-1",
+        action: "read",
+        resources: ["README.md"],
+        save: ["*.md"],
+        metadata: { path: "README.md" },
+        source: { type: "tool", messageID: "message-1", callID: "call-1" },
       }),
-    ).toEqual([agent("build"), agent("docs")])
+    ).toEqual({
+      id: "permission-1",
+      sessionID: "session-1",
+      permission: "read",
+      patterns: ["README.md"],
+      always: ["*.md"],
+      metadata: { path: "README.md" },
+      tool: { messageID: "message-1", callID: "call-1" },
+    })
   })
+})
+
+describe("normalizeProviderList", () => {
+  test("groups current models into the app provider catalog", () => {
+    const result = normalizeProviderList(
+      [{ id: "openai", name: "OpenAI", package: "@ai-sdk/openai" }] as ProviderListOutput["data"],
+      [
+        {
+          id: "gpt-5",
+          modelID: "gpt-5",
+          providerID: "openai",
+          name: "GPT-5",
+          capabilities: { tools: true, input: ["text", "image"], output: ["text"] },
+          variants: [{ id: "high" }],
+          time: { released: 1 },
+          cost: [{ input: 1, output: 2, cache: { read: 0.1, write: 0.2 } }],
+          status: "active",
+          enabled: true,
+          limit: { context: 128_000, output: 8_192 },
+        },
+        {
+          id: "gpt-old",
+          modelID: "gpt-old",
+          providerID: "openai",
+          name: "GPT Old",
+          capabilities: { tools: false, input: ["text"], output: ["text"] },
+          variants: [],
+          time: { released: 0 },
+          cost: [],
+          status: "deprecated",
+          enabled: true,
+          limit: { context: 1, output: 1 },
+        },
+      ] as ModelListOutput["data"],
+      { id: "gpt-5", providerID: "openai" } as ModelDefaultOutput["data"],
+    )
 
-  test("drops invalid payloads", () => {
-    expect(normalizeAgentList({ name: "AbortError" })).toEqual([])
-    expect(normalizeAgentList([{ name: "build" }, agent("docs")])).toEqual([agent("docs")])
+    expect(result.connected).toEqual(["openai"])
+    expect(result.default).toEqual({ openai: "gpt-5" })
+    expect(result.all.get("openai")?.models["gpt-old"]).toBeUndefined()
+    expect(result.all.get("openai")?.models["gpt-5"]).toMatchObject({
+      id: "gpt-5",
+      providerID: "openai",
+      capabilities: { toolcall: true, attachment: true },
+      cost: { input: 1, output: 2 },
+      variants: { high: {} },
+    })
   })
 })
 
diff --git a/packages/app/src/context/global-sync/utils.ts b/packages/app/src/context/global-sync/utils.ts
index e54bc88d4dea..59632e53c92e 100644
--- a/packages/app/src/context/global-sync/utils.ts
+++ b/packages/app/src/context/global-sync/utils.ts
@@ -1,39 +1,152 @@
-import type { Agent, Project, ProviderListResponse } from "@opencode-ai/sdk/v2/client"
+import type {
+  AgentListOutput,
+  ModelDefaultOutput,
+  ModelListOutput,
+  PermissionV2Request,
+  ProviderListOutput,
+} from "@opencode-ai/client/promise"
+import type { Agent, PermissionRequest, Project, Provider, ProviderListResponse } from "@opencode-ai/sdk/v2/client"
+import type { Project as CurrentProject } from "@opencode-ai/client/promise"
 import { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 export { pathKey as directoryKey, type PathKey as DirectoryKey } from "@/utils/path-key"
 
 export const cmp = (a: string, b: string) => (a < b ? -1 : a > b ? 1 : 0)
 
-function isAgent(input: unknown): input is Agent {
-  if (!input || typeof input !== "object") return false
-  const item = input as { name?: unknown; mode?: unknown }
-  if (typeof item.name !== "string") return false
-  return item.mode === "subagent" || item.mode === "primary" || item.mode === "all"
+export function normalizeAgentList(input: AgentListOutput["data"] | Agent[]): Agent[] {
+  if (input.every((agent) => !("request" in agent))) return input as Agent[]
+  return (input as AgentListOutput["data"]).map((agent) => ({
+    name: agent.id,
+    description: agent.description,
+    mode: agent.mode,
+    hidden: agent.hidden,
+    temperature:
+      typeof agent.request.settings.temperature === "number" ? agent.request.settings.temperature : undefined,
+    topP: typeof agent.request.settings.topP === "number" ? agent.request.settings.topP : undefined,
+    color: agent.color,
+    permission: agent.permissions.map((rule) => ({
+      permission: rule.action,
+      pattern: rule.resource,
+      action: rule.effect,
+    })),
+    model: agent.model && { providerID: agent.model.providerID, modelID: agent.model.id },
+    variant: agent.model?.variant,
+    prompt: agent.system,
+    options: agent.request.settings,
+    steps: agent.steps,
+  }))
 }
 
-export function normalizeAgentList(input: unknown): Agent[] {
-  if (Array.isArray(input)) return input.filter(isAgent)
-  if (isAgent(input)) return [input]
-  if (!input || typeof input !== "object") return []
-  return Object.values(input).filter(isAgent)
+export function normalizePermissionRequest(input: PermissionV2Request | PermissionRequest): PermissionRequest {
+  if ("permission" in input) return input
+  return {
+    id: input.id,
+    sessionID: input.sessionID,
+    permission: input.action,
+    patterns: input.resources,
+    always: input.save ?? [],
+    metadata: input.metadata ?? {},
+    tool:
+      input.source?.type === "tool" ? { messageID: input.source.messageID, callID: input.source.callID } : undefined,
+  }
 }
 
-export function normalizeProviderList(input: ProviderListResponse): NormalizedProviderListResponse {
-  return {
-    ...input,
-    all: new Map(
-      input.all.map(
-        (provider) =>
-          [
-            provider.id,
-            {
-              ...provider,
-              models: Object.fromEntries(
-                Object.entries(provider.models).filter(([, info]) => info.status !== "deprecated"),
-              ),
-            },
-          ] as const,
+export function normalizeProviderList(
+  providers: ProviderListOutput["data"] | ProviderListResponse,
+  models?: ModelListOutput["data"],
+  defaultModel?: ModelDefaultOutput["data"],
+): NormalizedProviderListResponse {
+  if (!Array.isArray(providers)) {
+    return {
+      ...providers,
+      all: new Map(
+        providers.all.map((provider) => [
+          provider.id,
+          {
+            ...provider,
+            models: Object.fromEntries(
+              Object.entries(provider.models).filter(([, model]) => model.status !== "deprecated"),
+            ),
+          },
+        ]),
       ),
+    }
+  }
+  const all = new Map<string, Provider>()
+
+  for (const provider of providers) {
+    all.set(provider.id, {
+      id: provider.id,
+      name: provider.name,
+      source: "custom",
+      env: [],
+      options: provider.settings ?? {},
+      models: {},
+    })
+  }
+
+  for (const model of models ?? []) {
+    const provider = all.get(model.providerID)
+    if (!provider || model.status === "deprecated") continue
+    const cost = model.cost.find((item) => item.tier === undefined) ?? model.cost[0]
+    provider.models[model.id] = {
+      id: model.id,
+      providerID: model.providerID,
+      api: {
+        id: model.modelID,
+        url: "",
+        npm: model.package ?? provider.id,
+      },
+      name: model.name,
+      family: model.family,
+      capabilities: {
+        temperature: false,
+        reasoning: false,
+        attachment: model.capabilities.input.some((item) => item !== "text"),
+        toolcall: model.capabilities.tools,
+        input: {
+          text: model.capabilities.input.includes("text"),
+          audio: model.capabilities.input.includes("audio"),
+          image: model.capabilities.input.includes("image"),
+          video: model.capabilities.input.includes("video"),
+          pdf: model.capabilities.input.includes("pdf"),
+        },
+        output: {
+          text: model.capabilities.output.includes("text"),
+          audio: model.capabilities.output.includes("audio"),
+          image: model.capabilities.output.includes("image"),
+          video: model.capabilities.output.includes("video"),
+          pdf: model.capabilities.output.includes("pdf"),
+        },
+        interleaved: false,
+      },
+      cost: {
+        input: cost?.input ?? 0,
+        output: cost?.output ?? 0,
+        cache: {
+          read: cost?.cache.read ?? 0,
+          write: cost?.cache.write ?? 0,
+        },
+      },
+      limit: model.limit,
+      status: model.status,
+      options: model.settings ?? {},
+      headers: model.headers ?? {},
+      release_date: new Date(model.time.released).toISOString().slice(0, 10),
+      variants: Object.fromEntries(model.variants.map((variant) => [variant.id, variant.settings ?? {}])),
+    }
+  }
+
+  return {
+    all,
+    connected: providers.map((provider) => provider.id),
+    default: Object.fromEntries(
+      providers.flatMap((provider) => {
+        const model =
+          defaultModel?.providerID === provider.id
+            ? defaultModel
+            : models?.find((item) => item.providerID === provider.id && item.status !== "deprecated")
+        return model ? [[provider.id, model.id]] : []
+      }),
     ),
   }
 }
@@ -49,3 +162,10 @@ export function sanitizeProject(project: Project) {
     },
   }
 }
+
+export function normalizeProjectInfo(project: Project | CurrentProject): Project {
+  return {
+    ...project,
+    vcs: project.vcs === "git" ? "git" : undefined,
+  }
+}
diff --git a/packages/app/src/context/layout.tsx b/packages/app/src/context/layout.tsx
index 7ac248dc1d1b..c039b3d48277 100644
--- a/packages/app/src/context/layout.tsx
+++ b/packages/app/src/context/layout.tsx
@@ -8,6 +8,7 @@ import { useServerSDK } from "./server-sdk"
 import { RECENTLY_CLOSED_DISPLAY_LIMIT, ServerConnection, useServer } from "./server"
 import { usePlatform } from "./platform"
 import { Project } from "@opencode-ai/sdk/v2"
+import { normalizeProjectInfo } from "./global-sync/utils"
 import { Persist, persisted, removePersisted } from "@/utils/persist"
 import { pathKey } from "@/utils/path-key"
 import { decode64 } from "@/utils/base64"
@@ -570,7 +571,12 @@ export const { use: useLayout, provider: LayoutProvider } = createSimpleContext(
         }
 
         void serverSdk()
-          .client.project.update({ projectID: project.id, directory: worktree, icon: { color } })
+          .api.project.update({ projectID: project.id, icon: { color } })
+          .then((result) =>
+            serverSync().set("project", (items) =>
+              items.map((item) => (item.id === result.id ? normalizeProjectInfo(result) : item)),
+            ),
+          )
           .catch(() => {
             if (colorRequested.get(worktree) === color) colorRequested.delete(worktree)
           })
diff --git a/packages/app/src/context/permission.tsx b/packages/app/src/context/permission.tsx
index 496d1ab4a282..388e4534a11a 100644
--- a/packages/app/src/context/permission.tsx
+++ b/packages/app/src/context/permission.tsx
@@ -13,6 +13,7 @@ import { type DraftTab, useTabs } from "./tabs"
 import { useSettings } from "./settings"
 import { requireServerKey } from "@/utils/session-route"
 import type { ServerScope } from "@/utils/server-scope"
+import { normalizePermissionRequest } from "./global-sync/utils"
 import {
   acceptKey,
   directoryAcceptKey,
@@ -243,9 +244,20 @@ function createServerPermissionState(input: { sdk: ServerSDK; sync: ServerSync }
 
   const respond: PermissionRespondFn = (request) => {
     if (meta.disposed) return
-    input.sdk.client.permission.respond(request).catch(() => {
-      responded.delete(request.permissionID)
-    })
+    input.sdk.api.permission
+      .reply({ sessionID: request.sessionID, requestID: request.permissionID, reply: request.response })
+      .catch(() => {
+        responded.delete(request.permissionID)
+      })
+  }
+
+  const list = async (directory: string) => {
+    if ((await input.sdk.protocol) === "v1") {
+      return (await input.sdk.client.permission.list({ directory })).data ?? []
+    }
+    return input.sdk.api.permission.request
+      .list({ location: { directory } })
+      .then((result) => result.data.map(normalizePermissionRequest))
   }
 
   function respondOnce(permission: PermissionRequest, directory?: string) {
@@ -343,14 +355,12 @@ function createServerPermissionState(input: { sdk: ServerSDK; sync: ServerSync }
       }),
     )
 
-    input.sdk.client.permission
-      .list({ directory })
-      .then((x) => {
+    list(directory)
+      .then((permissions) => {
         if (meta.disposed) return
         if (!isAutoAcceptingDirectory(directory)) return
-        for (const perm of x.data ?? []) {
-          if (!perm?.id) continue
-          void respondPending(perm, directory, () => isAutoAcceptingDirectory(directory))
+        for (const permission of permissions) {
+          void respondPending(permission, directory, () => isAutoAcceptingDirectory(directory))
         }
       })
       .catch(() => undefined)
@@ -377,16 +387,14 @@ function createServerPermissionState(input: { sdk: ServerSDK; sync: ServerSync }
       }),
     )
 
-    input.sdk.client.permission
-      .list({ directory })
-      .then((x) => {
+    list(directory)
+      .then((permissions) => {
         if (meta.disposed) return
         if (enableVersion.get(key) !== version) return
         if (!isAutoAccepting(sessionID, directory)) return
-        for (const perm of x.data ?? []) {
-          if (!perm?.id) continue
+        for (const permission of permissions) {
           void respondPending(
-            perm,
+            permission,
             directory,
             () => enableVersion.get(key) === version && isAutoAccepting(sessionID, directory),
           )
diff --git a/packages/app/src/context/server-sdk.test.ts b/packages/app/src/context/server-sdk.test.ts
index 7b592178fa24..1c17a6b9de5e 100644
--- a/packages/app/src/context/server-sdk.test.ts
+++ b/packages/app/src/context/server-sdk.test.ts
@@ -1,5 +1,6 @@
 import { describe, expect, test } from "bun:test"
-import { coalesceServerEvents, enqueueServerEvent, resumeStreamAfterPageShow } from "./server-sdk"
+import { adaptServerEvent, coalesceServerEvents, enqueueServerEvent, resumeStreamAfterPageShow } from "./server-sdk"
+import type { OpenCodeEvent } from "@opencode-ai/client/promise"
 import type { Event } from "@opencode-ai/sdk/v2/client"
 
 describe("resumeStreamAfterPageShow", () => {
@@ -14,6 +15,23 @@ describe("resumeStreamAfterPageShow", () => {
   })
 })
 
+describe("adaptServerEvent", () => {
+  test("preserves V2 events while adapting permission requests for existing consumers", () => {
+    const current = {
+      id: "evt_1",
+      created: 1,
+      type: "permission.v2.asked",
+      data: { id: "perm_1", sessionID: "ses_1", action: "read", resources: ["src/**"] },
+    } as OpenCodeEvent
+
+    expect(adaptServerEvent(current)).toMatchObject({
+      type: "permission.asked",
+      properties: { id: "perm_1", sessionID: "ses_1", permission: "read", patterns: ["src/**"] },
+      current,
+    })
+  })
+})
+
 describe("coalesceServerEvents", () => {
   const delta = (value: string, field = "text", partID = "part") => ({
     directory: "/repo",
@@ -34,6 +52,23 @@ describe("coalesceServerEvents", () => {
     expect(result[0]?.payload).toMatchObject({ id: "second", properties: { delta: "hello world" } })
   })
 
+  test("merges adjacent current text deltas", () => {
+    const current = (id: string, value: string) => adaptServerEvent({
+      id,
+      created: 1,
+      type: "session.text.delta",
+      location: { directory: "/repo" },
+      data: { sessionID: "ses", assistantMessageID: "msg", ordinal: 0, delta: value },
+    } as OpenCodeEvent)
+    const result = coalesceServerEvents([
+      { directory: "/repo", payload: current("evt_1", "hello ") },
+      { directory: "/repo", payload: current("evt_2", "world") },
+    ])
+
+    expect(result).toHaveLength(1)
+    expect(result[0]?.payload.current).toMatchObject({ id: "evt_2", data: { delta: "hello world" } })
+  })
+
   test("preserves event boundaries and distinct fields", () => {
     const status = {
       directory: "/repo",
diff --git a/packages/app/src/context/server-sdk.tsx b/packages/app/src/context/server-sdk.tsx
index 06597e56e7ba..0e6051eadb97 100644
--- a/packages/app/src/context/server-sdk.tsx
+++ b/packages/app/src/context/server-sdk.tsx
@@ -1,21 +1,60 @@
+import type { OpenCodeEvent } from "@opencode-ai/client/promise"
 import type { Event } from "@opencode-ai/sdk/v2/client"
 import { createSimpleContext } from "@opencode-ai/ui/context"
 import { createGlobalEmitter } from "@solid-primitives/event-bus"
 import { makeEventListener } from "@solid-primitives/event-listener"
 import { type Accessor, batch, createMemo, onCleanup, onMount } from "solid-js"
-import { createSdkForServer } from "@/utils/server"
+import { createApiForServer, createSdkForServer } from "@/utils/server"
 import { useLanguage } from "./language"
 import { usePlatform } from "./platform"
 import { ServerConnection, useServer } from "./server"
 import { createRefCountMap } from "@/utils/refcount"
 import { useGlobal } from "./global"
 import { ServerScope } from "@/utils/server-scope"
+import { detectServerProtocol } from "@/utils/server-protocol"
+import { createCompatibleApi } from "@/utils/server-compat"
 
 const isAbortError = (error: unknown) =>
   error !== null && typeof error === "object" && "name" in error && error.name === "AbortError"
 
 const isStreamClosed = (error: unknown, signal?: AbortSignal) => isAbortError(error) || signal?.aborted === true
-type QueuedServerEvent = { directory: string; payload: Event }
+export type ServerEvent = Event & { current?: OpenCodeEvent }
+type QueuedServerEvent = { directory: string; payload: ServerEvent }
+type CurrentDelta = Extract<
+  OpenCodeEvent,
+  { type: "session.text.delta" | "session.reasoning.delta" | "session.tool.input.delta" | "session.compaction.delta" }
+>
+
+export function adaptServerEvent(event: OpenCodeEvent): ServerEvent {
+  if (event.type === "permission.v2.asked") {
+    return {
+      id: event.id,
+      type: "permission.asked",
+      properties: {
+        id: event.data.id,
+        sessionID: event.data.sessionID,
+        permission: event.data.action,
+        patterns: event.data.resources,
+        always: event.data.save ?? [],
+        metadata: event.data.metadata ?? {},
+        tool:
+          event.data.source?.type === "tool"
+            ? { messageID: event.data.source.messageID, callID: event.data.source.callID }
+            : undefined,
+      },
+      current: event,
+    } as ServerEvent
+  }
+  if (event.type === "permission.v2.replied")
+    return { id: event.id, type: "permission.replied", properties: event.data, current: event } as ServerEvent
+  if (event.type === "question.v2.asked")
+    return { id: event.id, type: "question.asked", properties: event.data, current: event } as ServerEvent
+  if (event.type === "question.v2.replied")
+    return { id: event.id, type: "question.replied", properties: event.data, current: event } as ServerEvent
+  if (event.type === "question.v2.rejected")
+    return { id: event.id, type: "question.rejected", properties: event.data, current: event } as ServerEvent
+  return { id: event.id, type: event.type, properties: event.data, current: event } as ServerEvent
+}
 
 const coalescedKey = (event: QueuedServerEvent) => {
   if (event.payload.type === "lsp.updated") return `lsp.updated:${event.directory}`
@@ -40,6 +79,34 @@ export function enqueueServerEvent(queue: QueuedServerEvent[], event: QueuedServ
 export function coalesceServerEvents(events: QueuedServerEvent[]) {
   const output: QueuedServerEvent[] = []
   events.forEach((event) => {
+    const current = currentDelta(event.payload.current)
+    if (current) {
+      const previous = output[output.length - 1]
+      const prior = currentDelta(previous?.payload.current)
+      if (
+        previous &&
+        prior &&
+        previous.directory === event.directory &&
+        currentDeltaKey(prior) === currentDeltaKey(current)
+      ) {
+        const fragment = currentDeltaFragment(prior) + currentDeltaFragment(current)
+        const data =
+          current.type === "session.compaction.delta"
+            ? { ...current.data, text: fragment }
+            : { ...current.data, delta: fragment }
+        output[output.length - 1] = {
+          directory: event.directory,
+          payload: {
+            ...event.payload,
+            properties: data,
+            current: { ...current, data } as CurrentDelta,
+          } as ServerEvent,
+        }
+        return
+      }
+      output.push(event)
+      return
+    }
     if (event.payload.type !== "message.part.delta") {
       output.push(event)
       return
@@ -71,6 +138,27 @@ export function coalesceServerEvents(events: QueuedServerEvent[]) {
   return output
 }
 
+function currentDelta(event: OpenCodeEvent | undefined): CurrentDelta | undefined {
+  if (
+    event?.type === "session.text.delta" ||
+    event?.type === "session.reasoning.delta" ||
+    event?.type === "session.tool.input.delta" ||
+    event?.type === "session.compaction.delta"
+  )
+    return event
+}
+
+function currentDeltaKey(event: CurrentDelta) {
+  if (event.type === "session.tool.input.delta")
+    return `${event.type}:${event.data.sessionID}:${event.data.assistantMessageID}:${event.data.callID}`
+  if (event.type === "session.compaction.delta") return `${event.type}:${event.data.sessionID}`
+  return `${event.type}:${event.data.sessionID}:${event.data.assistantMessageID}:${event.data.ordinal}`
+}
+
+function currentDeltaFragment(event: CurrentDelta) {
+  return event.type === "session.compaction.delta" ? event.data.text : event.data.delta
+}
+
 export function resumeStreamAfterPageShow(event: PageTransitionEvent, start: () => unknown) {
   if (!event.persisted) return
   start()
@@ -91,13 +179,15 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
     }
   })()
 
+  const eventApi = createApiForServer({ server: server.http, fetch: eventFetch })
   const eventSdk = createSdkForServer({
     signal: abort.signal,
     fetch: eventFetch,
     server: server.http,
   })
+  const protocol = detectServerProtocol(server.http, platform.fetch ?? globalThis.fetch)
   const emitter = createGlobalEmitter<{
-    [key: string]: Event
+    [key: string]: ServerEvent
   }>()
 
   type Queued = QueuedServerEvent
@@ -142,21 +232,6 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
   let run: Promise<void> | undefined
   let started = false
   let generation = 0
-  const HEARTBEAT_TIMEOUT_MS = 15_000
-  let lastEventAt = Date.now()
-  let heartbeat: ReturnType<typeof setTimeout> | undefined
-  const resetHeartbeat = () => {
-    lastEventAt = Date.now()
-    if (heartbeat) clearTimeout(heartbeat)
-    heartbeat = setTimeout(() => {
-      attempt?.abort()
-    }, HEARTBEAT_TIMEOUT_MS)
-  }
-  const clearHeartbeat = () => {
-    if (!heartbeat) return
-    clearTimeout(heartbeat)
-    heartbeat = undefined
-  }
 
   const start = () => {
     if (started) return run
@@ -168,35 +243,24 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
       // oxlint-disable-next-line no-unmodified-loop-condition -- `started` is set to false by stop() which also aborts; both flags are checked to allow graceful exit
       while (!abort.signal.aborted && started && generation === active) {
         attempt = new AbortController()
-        lastEventAt = Date.now()
         const onAbort = () => {
           attempt?.abort()
         }
         abort.signal.addEventListener("abort", onAbort)
         try {
-          const events = await eventSdk.global.event({
-            signal: attempt.signal,
-            onSseError: (error) => {
-              if (isStreamClosed(error, attempt?.signal)) return
-              if (streamErrorLogged) return
-              streamErrorLogged = true
-              console.error("[global-sdk] event stream error", {
-                url: server.http.url,
-                fetch: eventFetch ? "platform" : "webview",
-                error,
-              })
-            },
-          })
+          const kind = await protocol
+          const events =
+            kind === "v1"
+              ? (await eventSdk.global.event({ signal: attempt.signal })).stream
+              : eventApi.event.subscribe({ signal: attempt.signal })
           let yielded = Date.now()
-          resetHeartbeat()
-          for await (const event of events.stream) {
-            resetHeartbeat()
+          for await (const event of events) {
             streamErrorLogged = false
-            if (event.payload.type !== "sync") {
-              const directory = event.directory ?? "global"
-              const payload = event.payload as Event
-              if (enqueueServerEvent(queue, { directory, payload })) schedule()
-            }
+            const legacy = "payload" in event
+            if (legacy && event.payload.type === "sync") continue
+            const directory = legacy ? (event.directory ?? "global") : (event.location?.directory ?? "global")
+            const payload = legacy ? (event.payload as Event) : adaptServerEvent(event)
+            if (enqueueServerEvent(queue, { directory, payload })) schedule()
 
             if (Date.now() - yielded < STREAM_YIELD_MS) continue
             yielded = Date.now()
@@ -214,7 +278,6 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
         } finally {
           abort.signal.removeEventListener("abort", onAbort)
           attempt = undefined
-          clearHeartbeat()
         }
 
         if (abort.signal.aborted || !started || generation !== active) return
@@ -233,18 +296,11 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
     started = false
     generation++
     attempt?.abort()
-    clearHeartbeat()
   }
 
   onMount(() => {
     makeEventListener(window, "pagehide", stop)
     makeEventListener(window, "pageshow", (event) => resumeStreamAfterPageShow(event, start))
-    makeEventListener(document, "visibilitychange", () => {
-      if (document.visibilityState !== "visible") return
-      if (!started) return
-      if (Date.now() - lastEventAt < HEARTBEAT_TIMEOUT_MS) return
-      attempt?.abort()
-    })
   })
 
   onCleanup(() => {
@@ -258,12 +314,24 @@ function createServerSdkContextBase(server: ServerConnection.Any, scope: ServerS
     fetch: platform.fetch,
     throwOnError: true,
   })
+  const currentApi = createApiForServer({ server: server.http, fetch: platform.fetch })
+  const legacy = (directory?: string) =>
+    createSdkForServer({
+      server: server.http,
+      fetch: platform.fetch,
+      throwOnError: true,
+      directory,
+    })
+  const api = createCompatibleApi({ protocol, current: currentApi, legacy })
 
   return {
     server,
     scope,
+    protocol,
     url: server.http.url,
     client: sdk,
+    api,
+    currentApi,
     event: {
       on: emitter.on.bind(emitter),
       listen: emitter.listen.bind(emitter),
@@ -309,7 +377,7 @@ export const { use: useServerSDK, provider: ServerSDKProvider } = createSimpleCo
 })
 
 type SDKEventMap = {
-  [key in Event["type"]]: Extract<Event, { type: key }>
+  [key in Event["type"]]: Extract<ServerEvent, { type: key }>
 }
 
 function createDirSdkContext(directory: string, serverSDK: ServerSDKBase) {
@@ -329,6 +397,12 @@ function createDirSdkContext(directory: string, serverSDK: ServerSDKBase) {
     scope: serverSDK.scope,
     directory,
     client,
+    api: createCompatibleApi({
+      protocol: serverSDK.protocol,
+      current: serverSDK.currentApi,
+      legacy: (next) => serverSDK.createClient({ directory: next ?? directory, throwOnError: true }),
+      directory,
+    }),
     event: emitter,
     get url() {
       return serverSDK.url
diff --git a/packages/app/src/context/server-session-v2-reducer.test.ts b/packages/app/src/context/server-session-v2-reducer.test.ts
new file mode 100644
index 000000000000..578d636ef641
--- /dev/null
+++ b/packages/app/src/context/server-session-v2-reducer.test.ts
@@ -0,0 +1,148 @@
+import { describe, expect, test } from "bun:test"
+import type { OpenCodeEvent, SessionMessageInfo } from "@opencode-ai/client/promise"
+import { createV2SessionReducer } from "./server-session-v2-reducer"
+
+const event = (input: object) => input as OpenCodeEvent
+const base = { created: 1, location: { directory: "/repo" }, durable: { aggregateID: "ses_1", seq: 1, version: 1 } }
+
+describe("v2 session reducer", () => {
+  test("projects promoted input and streaming assistant content", () => {
+    const reducer = createV2SessionReducer()
+    let messages: SessionMessageInfo[] = []
+    const apply = (input: object) => {
+      const result = reducer.reduce(messages, event(input))
+      if (result) messages = result.messages
+      return result
+    }
+
+    apply({
+      ...base,
+      id: "evt_admitted",
+      type: "session.input.admitted",
+      data: {
+        sessionID: "ses_1",
+        inputID: "msg_user",
+        input: { type: "user", delivery: "steer", data: { text: "hello" } },
+      },
+    })
+    apply({ ...base, id: "evt_promoted", type: "session.input.promoted", data: { sessionID: "ses_1", inputID: "msg_user" } })
+    apply({
+      ...base,
+      id: "evt_step",
+      type: "session.step.started",
+      data: {
+        sessionID: "ses_1",
+        assistantMessageID: "msg_assistant",
+        agent: "build",
+        model: { id: "model", providerID: "provider" },
+      },
+    })
+    apply({
+      ...base,
+      id: "evt_text_start",
+      type: "session.text.started",
+      data: { sessionID: "ses_1", assistantMessageID: "msg_assistant", ordinal: 0 },
+    })
+    apply({
+      ...base,
+      id: "evt_text_delta",
+      type: "session.text.delta",
+      data: { sessionID: "ses_1", assistantMessageID: "msg_assistant", ordinal: 0, delta: "hel" },
+    })
+    apply({
+      ...base,
+      id: "evt_text_end",
+      type: "session.text.ended",
+      data: { sessionID: "ses_1", assistantMessageID: "msg_assistant", ordinal: 0, text: "hello" },
+    })
+
+    expect(messages[0]).toMatchObject({ id: "msg_user", type: "user", text: "hello" })
+    expect(messages[1]).toMatchObject({
+      id: "msg_assistant",
+      type: "assistant",
+      content: [{ type: "text", text: "hello" }],
+    })
+  })
+
+  test("folds tool, retry, and completion events", () => {
+    const reducer = createV2SessionReducer()
+    let messages: SessionMessageInfo[] = []
+    const apply = (input: object) => {
+      const result = reducer.reduce(messages, event(input))
+      if (result) messages = result.messages
+    }
+
+    apply({
+      ...base,
+      id: "evt_step",
+      type: "session.step.started",
+      data: {
+        sessionID: "ses_1",
+        assistantMessageID: "msg_assistant",
+        agent: "build",
+        model: { id: "model", providerID: "provider" },
+      },
+    })
+    apply({
+      ...base,
+      id: "evt_tool_start",
+      type: "session.tool.input.started",
+      data: { sessionID: "ses_1", assistantMessageID: "msg_assistant", callID: "call_1", name: "bash" },
+    })
+    apply({
+      ...base,
+      id: "evt_tool_delta",
+      type: "session.tool.input.delta",
+      data: { sessionID: "ses_1", assistantMessageID: "msg_assistant", callID: "call_1", delta: "{}" },
+    })
+    apply({
+      ...base,
+      id: "evt_tool_called",
+      type: "session.tool.called",
+      data: { sessionID: "ses_1", assistantMessageID: "msg_assistant", callID: "call_1", input: {}, executed: true },
+    })
+    apply({
+      ...base,
+      id: "evt_tool_success",
+      type: "session.tool.success",
+      data: {
+        sessionID: "ses_1",
+        assistantMessageID: "msg_assistant",
+        callID: "call_1",
+        structured: {},
+        content: [{ type: "text", text: "done" }],
+        executed: true,
+      },
+    })
+    apply({
+      ...base,
+      id: "evt_retry",
+      type: "session.retry.scheduled",
+      data: {
+        sessionID: "ses_1",
+        assistantMessageID: "msg_assistant",
+        attempt: 2,
+        at: 10,
+        error: { type: "ProviderError", message: "retry" },
+      },
+    })
+    apply({ ...base, id: "evt_done", type: "session.execution.succeeded", data: { sessionID: "ses_1" } })
+
+    expect(messages[0]).toMatchObject({
+      type: "assistant",
+      retry: undefined,
+      content: [{ type: "tool", id: "call_1", state: { status: "completed", content: [{ text: "done" }] } }],
+    })
+  })
+
+  test("requests hydration when promotion admission was missed", () => {
+    const result = createV2SessionReducer().reduce([], event({
+      ...base,
+      id: "evt_promoted",
+      type: "session.input.promoted",
+      data: { sessionID: "ses_1", inputID: "msg_user" },
+    }))
+
+    expect(result).toMatchObject({ sessionID: "ses_1", missing: "msg_user", touched: [] })
+  })
+})
diff --git a/packages/app/src/context/server-session-v2-reducer.ts b/packages/app/src/context/server-session-v2-reducer.ts
new file mode 100644
index 000000000000..10c66764198c
--- /dev/null
+++ b/packages/app/src/context/server-session-v2-reducer.ts
@@ -0,0 +1,434 @@
+import type { OpenCodeEvent, SessionMessageInfo, SessionPendingMessage } from "@opencode-ai/client/promise"
+
+type Assistant = Extract<SessionMessageInfo, { type: "assistant" }>
+type Compaction = Extract<SessionMessageInfo, { type: "compaction" }>
+type Shell = Extract<SessionMessageInfo, { type: "shell" }>
+
+export type V2SessionReduction = {
+  sessionID: string
+  messages: SessionMessageInfo[]
+  touched: string[]
+  missing?: string
+}
+
+export function createV2SessionReducer() {
+  const pending = new Map<string, SessionPendingMessage>()
+
+  const reduce = (source: readonly SessionMessageInfo[], event: OpenCodeEvent): V2SessionReduction | undefined => {
+    if (!("data" in event) || !("sessionID" in event.data) || typeof event.data.sessionID !== "string") return
+    const sessionID = event.data.sessionID
+    const result = (messages: SessionMessageInfo[], touched: string[] = []): V2SessionReduction => ({
+      sessionID,
+      messages,
+      touched,
+    })
+    const append = (message: SessionMessageInfo) =>
+      result(source.some((item) => item.id === message.id) ? [...source] : [...source, message], [message.id])
+
+    switch (event.type) {
+      case "session.input.admitted":
+        pending.set(key(sessionID, event.data.inputID), event.data.input)
+        return result([...source])
+      case "session.input.promoted": {
+        const input = pending.get(key(sessionID, event.data.inputID))
+        pending.delete(key(sessionID, event.data.inputID))
+        if (!input) return { ...result([...source]), missing: event.data.inputID }
+        if (input.type === "user")
+          return append({
+            id: event.data.inputID,
+            type: "user",
+            metadata: input.data.metadata,
+            text: input.data.text,
+            files: input.data.files,
+            agents: input.data.agents,
+            time: { created: event.created },
+          })
+        return append({
+          id: event.data.inputID,
+          type: "synthetic",
+          metadata: input.data.metadata,
+          text: input.data.text,
+          description: input.data.description,
+          time: { created: event.created },
+        })
+      }
+      case "session.agent.selected":
+        return append({
+          id: messageID(event.id),
+          type: "agent-switched",
+          metadata: event.metadata,
+          agent: event.data.agent,
+          time: { created: event.created },
+        })
+      case "session.model.selected":
+        return append({
+          id: messageID(event.id),
+          type: "model-switched",
+          metadata: event.metadata,
+          model: event.data.model,
+          previous: source.findLast(
+            (item): item is Extract<SessionMessageInfo, { type: "model-switched" | "assistant" }> =>
+              item.type === "model-switched" || item.type === "assistant",
+          )?.model,
+          time: { created: event.created },
+        })
+      case "session.synthetic":
+        return append({
+          id: messageID(event.id),
+          type: "synthetic",
+          metadata: event.data.metadata,
+          text: event.data.text,
+          description: event.data.description,
+          time: { created: event.created },
+        })
+      case "session.skill.activated":
+        return append({
+          id: messageID(event.id),
+          type: "skill",
+          metadata: event.metadata,
+          skill: event.data.id,
+          name: event.data.name,
+          text: event.data.text,
+          time: { created: event.created },
+        })
+      case "session.shell.started":
+        return append({
+          id: messageID(event.id),
+          type: "shell",
+          metadata: event.metadata,
+          shellID: event.data.shell.id,
+          command: event.data.shell.command,
+          status: event.data.shell.status,
+          exit: event.data.shell.exit,
+          time: { created: event.created },
+        })
+      case "session.shell.ended":
+        return updateMessage<Shell>(source, (item): item is Shell => item.type === "shell" && item.shellID === event.data.shell.id, (item) => ({
+          ...item,
+          status: event.data.shell.status,
+          exit: event.data.shell.exit,
+          output: event.data.output,
+          time: { ...item.time, completed: event.created },
+        }), sessionID)
+      case "session.step.started": {
+        const current = source.findLast((item): item is Assistant => item.type === "assistant" && !item.time.completed)
+        const completed = current && current.id !== event.data.assistantMessageID
+          ? update(source, current.id, (item) => item.type === "assistant" ? { ...item, retry: undefined, time: { ...item.time, completed: event.created } } : item)
+          : [...source]
+        const existing = completed.find((item) => item.id === event.data.assistantMessageID)
+        if (existing?.type === "assistant")
+          return result(update(completed, existing.id, (item) => item.type === "assistant" ? {
+            ...item,
+            agent: event.data.agent,
+            model: event.data.model,
+            retry: undefined,
+            error: undefined,
+            finish: undefined,
+            snapshot: event.data.snapshot ? { ...item.snapshot, start: event.data.snapshot } : item.snapshot,
+            time: { ...item.time, completed: undefined },
+          } : item), current && current.id !== existing.id ? [current.id, existing.id] : [existing.id])
+        return result([...completed, {
+          id: event.data.assistantMessageID,
+          type: "assistant",
+          metadata: event.metadata,
+          agent: event.data.agent,
+          model: event.data.model,
+          content: [],
+          snapshot: event.data.snapshot ? { start: event.data.snapshot } : undefined,
+          time: { created: event.created },
+        }], current ? [current.id, event.data.assistantMessageID] : [event.data.assistantMessageID])
+      }
+      case "session.step.ended":
+        return updateAssistant(source, event.data.assistantMessageID, sessionID, (item) => ({
+          ...item,
+          finish: event.data.finish,
+          cost: event.data.cost,
+          tokens: event.data.tokens,
+          snapshot: event.data.snapshot || event.data.files
+            ? { ...item.snapshot, end: event.data.snapshot, files: event.data.files }
+            : item.snapshot,
+          time: { ...item.time, completed: event.created },
+        }))
+      case "session.step.failed":
+        return updateAssistant(source, event.data.assistantMessageID, sessionID, (item) => ({
+          ...item,
+          finish: "error",
+          error: event.data.error,
+          retry: undefined,
+          cost: event.data.cost ?? item.cost,
+          tokens: event.data.tokens ?? item.tokens,
+          snapshot: event.data.snapshot || event.data.files
+            ? { ...item.snapshot, end: event.data.snapshot, files: event.data.files }
+            : item.snapshot,
+          time: { ...item.time, completed: event.created },
+        }))
+      case "session.text.started":
+        return updateAssistant(source, event.data.assistantMessageID, sessionID, (item) => ({
+          ...item,
+          content: insertOrdinal(item.content, "text", event.data.ordinal, { type: "text", text: "" }),
+        }))
+      case "session.text.delta":
+        return updateContent(source, event.data.assistantMessageID, sessionID, "text", event.data.ordinal, (item) => ({
+          ...item,
+          text: item.text + event.data.delta,
+        }))
+      case "session.text.ended":
+        return updateContent(source, event.data.assistantMessageID, sessionID, "text", event.data.ordinal, (item) => ({
+          ...item,
+          text: event.data.text,
+        }))
+      case "session.reasoning.started":
+        return updateAssistant(source, event.data.assistantMessageID, sessionID, (item) => ({
+          ...item,
+          content: insertOrdinal(item.content, "reasoning", event.data.ordinal, {
+            type: "reasoning",
+            text: "",
+            state: event.data.state,
+            time: { created: event.created },
+          }),
+        }))
+      case "session.reasoning.delta":
+        return updateContent(source, event.data.assistantMessageID, sessionID, "reasoning", event.data.ordinal, (item) => ({
+          ...item,
+          text: item.text + event.data.delta,
+        }))
+      case "session.reasoning.ended":
+        return updateContent(source, event.data.assistantMessageID, sessionID, "reasoning", event.data.ordinal, (item) => ({
+          ...item,
+          text: event.data.text,
+          state: event.data.state ?? item.state,
+          time: { created: item.time?.created ?? event.created, completed: event.created },
+        }))
+      case "session.tool.input.started":
+        return updateAssistant(source, event.data.assistantMessageID, sessionID, (item) => ({
+          ...item,
+          content: item.content.some((content) => content.type === "tool" && content.id === event.data.callID)
+            ? item.content
+            : [...item.content, {
+                type: "tool",
+                id: event.data.callID,
+                name: event.data.name,
+                state: { status: "streaming", input: "" },
+                time: { created: event.created },
+              }],
+        }))
+      case "session.tool.input.delta":
+        return updateTool(source, event.data.assistantMessageID, event.data.callID, sessionID, (tool) =>
+          tool.state.status === "streaming"
+            ? { ...tool, state: { ...tool.state, input: tool.state.input + event.data.delta } }
+            : tool,
+        )
+      case "session.tool.input.ended":
+        return updateTool(source, event.data.assistantMessageID, event.data.callID, sessionID, (tool) =>
+          tool.state.status === "streaming" ? { ...tool, state: { ...tool.state, input: event.data.text } } : tool,
+        )
+      case "session.tool.called":
+        return updateTool(source, event.data.assistantMessageID, event.data.callID, sessionID, (tool) => ({
+          ...tool,
+          executed: event.data.executed,
+          providerState: event.data.state,
+          state: { status: "running", input: event.data.input, structured: {}, content: [] },
+          time: { ...tool.time, ran: event.created },
+        }))
+      case "session.tool.progress":
+        return updateTool(source, event.data.assistantMessageID, event.data.callID, sessionID, (tool) =>
+          tool.state.status === "running"
+            ? { ...tool, state: { ...tool.state, structured: event.data.structured, content: event.data.content } }
+            : tool,
+        )
+      case "session.tool.success":
+        return updateTool(source, event.data.assistantMessageID, event.data.callID, sessionID, (tool) => {
+          if (tool.state.status !== "running") return tool
+          return {
+            ...tool,
+            executed: event.data.executed || tool.executed === true,
+            providerResultState: event.data.resultState,
+            state: {
+              status: "completed",
+              input: tool.state.input,
+              structured: event.data.structured,
+              content: event.data.content,
+              result: event.data.result,
+            },
+            time: { ...tool.time, completed: event.created },
+          }
+        })
+      case "session.tool.failed":
+        return updateTool(source, event.data.assistantMessageID, event.data.callID, sessionID, (tool) => {
+          if (tool.state.status !== "streaming" && tool.state.status !== "running") return tool
+          return {
+            ...tool,
+            executed: event.data.executed || tool.executed === true,
+            providerResultState: event.data.resultState,
+            state: {
+              status: "error",
+              input: typeof tool.state.input === "string" ? {} : tool.state.input,
+              structured: tool.state.status === "running" ? tool.state.structured : {},
+              content: tool.state.status === "running" ? tool.state.content : [],
+              error: event.data.error,
+              result: event.data.result,
+            },
+            time: { ...tool.time, completed: event.created },
+          }
+        })
+      case "session.retry.scheduled":
+        return updateAssistant(source, event.data.assistantMessageID, sessionID, (item) => ({
+          ...item,
+          retry: { attempt: event.data.attempt, at: event.data.at, error: event.data.error },
+        }))
+      case "session.execution.succeeded":
+      case "session.execution.failed":
+      case "session.execution.interrupted": {
+        const current = source.findLast((item): item is Assistant => item.type === "assistant" && !item.time.completed)
+        if (!current?.retry) return result([...source])
+        return updateAssistant(source, current.id, sessionID, (item) => ({ ...item, retry: undefined }))
+      }
+      case "session.compaction.started":
+        return append({
+          id: event.data.inputID ?? messageID(event.id),
+          type: "compaction",
+          status: "running",
+          metadata: event.metadata,
+          reason: event.data.reason,
+          summary: "",
+          recent: event.data.recent,
+          time: { created: event.created },
+        })
+      case "session.compaction.delta":
+        return updateMessage<Extract<Compaction, { status: "running" }>>(source, (item): item is Extract<Compaction, { status: "running" }> => item.type === "compaction" && item.status === "running", (item) => ({
+          ...item,
+          summary: item.summary + event.data.text,
+        }), sessionID)
+      case "session.compaction.ended": {
+        const current = source.findLast((item): item is Extract<Compaction, { status: "running" }> => item.type === "compaction" && item.status === "running")
+        if (!current)
+          return append({
+            id: messageID(event.id),
+            type: "compaction",
+            status: "completed",
+            metadata: event.metadata,
+            reason: event.data.reason,
+            summary: event.data.text,
+            recent: event.data.recent,
+            time: { created: event.created },
+          })
+        return result(update(source, current.id, () => ({
+          ...current,
+          status: "completed",
+          reason: event.data.reason,
+          summary: event.data.text,
+          recent: event.data.recent,
+        })), [current.id])
+      }
+      case "session.compaction.failed": {
+        const current = source.findLast((item): item is Extract<Compaction, { status: "running" }> => item.type === "compaction" && item.status === "running")
+        const failed: Extract<Compaction, { status: "failed" }> = {
+          id: current?.id ?? event.data.inputID ?? messageID(event.id),
+          type: "compaction",
+          status: "failed",
+          metadata: current?.metadata ?? event.metadata,
+          reason: event.data.reason,
+          error: event.data.error,
+          time: current?.time ?? { created: event.created },
+        }
+        if (!current) return append(failed)
+        return result(update(source, current.id, () => failed), [failed.id])
+      }
+      default:
+        return
+    }
+  }
+
+  return {
+    reduce,
+    clear(sessionID: string) {
+      for (const id of pending.keys()) {
+        if (id.startsWith(`${sessionID}:`)) pending.delete(id)
+      }
+    },
+  }
+}
+
+function key(sessionID: string, inputID: string) {
+  return `${sessionID}:${inputID}`
+}
+
+function messageID(eventID: string) {
+  return eventID.replace(/^evt_/, "msg_")
+}
+
+function update(
+  source: readonly SessionMessageInfo[],
+  id: string,
+  apply: (item: SessionMessageInfo) => SessionMessageInfo,
+) {
+  return source.map((item) => item.id === id ? apply(item) : item)
+}
+
+function updateMessage<T extends SessionMessageInfo>(
+  source: readonly SessionMessageInfo[],
+  matches: (item: SessionMessageInfo) => item is T,
+  apply: (item: T) => T,
+  sessionID: string,
+): V2SessionReduction {
+  const current = source.findLast(matches)
+  if (!current) return { sessionID, messages: [...source], touched: [] }
+  return { sessionID, messages: update(source, current.id, (item) => matches(item) ? apply(item) : item), touched: [current.id] }
+}
+
+function updateAssistant(
+  source: readonly SessionMessageInfo[],
+  id: string,
+  sessionID: string,
+  apply: (item: Assistant) => Assistant,
+): V2SessionReduction {
+  return {
+    sessionID,
+    messages: update(source, id, (item) => item.type === "assistant" ? apply(item) : item),
+    touched: source.some((item) => item.id === id && item.type === "assistant") ? [id] : [],
+  }
+}
+
+function updateContent<T extends "text" | "reasoning">(
+  source: readonly SessionMessageInfo[],
+  messageID: string,
+  sessionID: string,
+  type: T,
+  ordinal: number,
+  apply: (item: Extract<Assistant["content"][number], { type: T }>) => Extract<Assistant["content"][number], { type: T }>,
+) {
+  return updateAssistant(source, messageID, sessionID, (assistant) => {
+    let index = -1
+    return {
+      ...assistant,
+      content: assistant.content.map((item) => {
+        if (item.type !== type || ++index !== ordinal) return item
+        return apply(item as Extract<Assistant["content"][number], { type: T }>)
+      }),
+    }
+  })
+}
+
+function updateTool(
+  source: readonly SessionMessageInfo[],
+  messageID: string,
+  callID: string,
+  sessionID: string,
+  apply: (item: Extract<Assistant["content"][number], { type: "tool" }>) => Extract<Assistant["content"][number], { type: "tool" }>,
+) {
+  return updateAssistant(source, messageID, sessionID, (assistant) => ({
+    ...assistant,
+    content: assistant.content.map((item) => item.type === "tool" && item.id === callID ? apply(item) : item),
+  }))
+}
+
+function insertOrdinal<T extends Assistant["content"][number]["type"]>(
+  source: Assistant["content"],
+  type: T,
+  ordinal: number,
+  item: Extract<Assistant["content"][number], { type: T }>,
+) {
+  const matches = source.filter((content) => content.type === type)
+  if (matches[ordinal]) return source
+  return [...source, item]
+}
diff --git a/packages/app/src/context/server-session.test.ts b/packages/app/src/context/server-session.test.ts
index 555492807597..30723ecfbf28 100644
--- a/packages/app/src/context/server-session.test.ts
+++ b/packages/app/src/context/server-session.test.ts
@@ -1,5 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import type { retry } from "@opencode-ai/core/util/retry"
+import type { MessageApi, OpenCodeEvent, SessionApi } from "@opencode-ai/client/promise"
 import type { Message, OpencodeClient, Part, Session } from "@opencode-ai/sdk/v2/client"
 import { createServerSession } from "./server-session"
 
@@ -158,6 +159,57 @@ function setup(sessions: Record<string, Session>) {
 }
 
 describe("server session", () => {
+  test("projects V2 session events into current and legacy message state", () => {
+    const ctx = setup({ child: session("child") })
+    ctx.store.remember(session("child"))
+    ctx.store.set("session_message", "child", [
+      {
+        id: "msg_1_user",
+        type: "user",
+        text: "hello",
+        time: { created: 1 },
+      },
+    ])
+    const apply = (input: object) => ctx.store.applyV2(input as OpenCodeEvent)
+
+    apply({
+      id: "evt_step",
+      created: 2,
+      type: "session.step.started",
+      durable: { aggregateID: "child", seq: 1, version: 1 },
+      location: { directory: "/repo" },
+      data: {
+        sessionID: "child",
+        assistantMessageID: "msg_2_assistant",
+        agent: "build",
+        model: { id: "model", providerID: "provider" },
+      },
+    })
+    apply({
+      id: "evt_text_start",
+      created: 3,
+      type: "session.text.started",
+      durable: { aggregateID: "child", seq: 2, version: 1 },
+      location: { directory: "/repo" },
+      data: { sessionID: "child", assistantMessageID: "msg_2_assistant", ordinal: 0 },
+    })
+    apply({
+      id: "evt_text_delta",
+      created: 4,
+      type: "session.text.delta",
+      location: { directory: "/repo" },
+      data: { sessionID: "child", assistantMessageID: "msg_2_assistant", ordinal: 0, delta: "world" },
+    })
+
+    expect(ctx.store.data.session_message.child?.at(-1)).toMatchObject({
+      id: "msg_2_assistant",
+      type: "assistant",
+      content: [{ type: "text", text: "world" }],
+    })
+    expect(ctx.store.data.message.child?.map((message) => message.id)).toEqual(["msg_1_user", "msg_2_assistant"])
+    expect(ctx.store.data.part.msg_2_assistant).toMatchObject([{ type: "text", text: "world" }])
+  })
+
   test("resolves lineage by session ID without directory", async () => {
     const ctx = setup({ child: session("child", "root"), root: session("root") })
 
@@ -178,6 +230,111 @@ describe("server session", () => {
     expect(ctx.store.data.message.root).toEqual([])
   })
 
+  test("loads current session content through the current message API", async () => {
+    const requests: unknown[] = []
+    const user = { id: "msg_z_user", type: "user", text: "hello", time: { created: 1 } }
+    const assistant = {
+      id: "msg_a_assistant",
+      type: "assistant",
+      agent: "build",
+      model: { id: "model", providerID: "provider" },
+      content: [{ type: "text", text: "hi" }],
+      time: { created: 2, completed: 3 },
+    }
+    const client = {
+      session: {
+        messages: () => {
+          throw new Error("legacy message endpoint called")
+        },
+      },
+    } as unknown as OpencodeClient
+    const messageApi = {
+      list: async (input: unknown) => {
+        requests.push(input)
+        return { data: [assistant, user], cursor: { previous: null, next: null } }
+      },
+    } as unknown as MessageApi
+    const store = createServerSession(client, {} as SessionApi, messageApi)
+    store.remember(session("root"))
+
+    await store.sync("root")
+
+    expect(requests).toEqual([{ sessionID: "root", limit: 20, order: "desc" }])
+    expect(store.data.session_message.root.map((message) => message.id)).toEqual([user.id, assistant.id])
+  })
+
+  test("reprojects current assistants when an older page supplies their user", async () => {
+    const user = { id: "msg_1_user", type: "user", text: "hello", time: { created: 1 } } as const
+    const assistant = (id: string, created: number) => ({
+      id,
+      type: "assistant" as const,
+      agent: "build",
+      model: { id: "model", providerID: "provider" },
+      content: [{ type: "text" as const, text: id }],
+      time: { created, completed: created },
+    })
+    const assistants = [
+      assistant("msg_2_assistant", 2),
+      assistant("msg_3_assistant", 3),
+      assistant("msg_4_assistant", 4),
+    ]
+    const pages = [
+      { data: assistants.slice(1).toReversed(), cursor: { previous: null, next: "older" } },
+      { data: [assistants[0], user], cursor: { previous: null, next: null } },
+    ]
+    const messageApi = {
+      list: async () => pages.shift()!,
+    } as unknown as MessageApi
+    const store = createServerSession({} as OpencodeClient, {} as SessionApi, messageApi)
+    store.remember(session("root"))
+
+    await store.sync("root")
+    expect(store.data.message.root).toEqual([])
+
+    await store.history.loadMore("root")
+
+    expect(store.data.message.root.map((message) => message.id)).toEqual([
+      user.id,
+      ...assistants.map((item) => item.id),
+    ])
+    expect(assistants.map((item) => store.data.part[item.id]?.[0]?.type)).toEqual(["text", "text", "text"])
+  })
+
+  test("indexes V1 messages for the current timeline projection", async () => {
+    const user = userMessage("message-1", { sessionID: "root" })
+    const assistant = assistantMessage("message-2", user.id, { sessionID: "root" })
+    const client = messageClient(
+      response([
+        { info: user, parts: [textPart(user.id, { sessionID: "root" })] },
+        { info: assistant, parts: [textPart(assistant.id, { sessionID: "root" })] },
+      ]),
+    )
+    const messageApi = {
+      list: () => {
+        throw new Error("current message endpoint called")
+      },
+    } as unknown as MessageApi
+    const store = createServerSession(client, {} as SessionApi, messageApi, {
+      protocol: Promise.resolve("v1"),
+    })
+    store.remember(session("root"))
+
+    await store.sync("root")
+
+    expect(store.data.message.root.map((message) => message.id)).toEqual([user.id, assistant.id])
+    expect(store.data.session_message.root).toMatchObject([
+      { id: user.id, type: "user", text: "text" },
+      { id: assistant.id, type: "assistant" },
+    ])
+
+    const next = userMessage("message-3", { sessionID: "root" })
+    store.apply({ type: "message.updated", properties: { info: next } })
+    expect(store.data.session_message.root.map((message) => message.id)).toEqual([user.id, assistant.id, next.id])
+
+    store.apply({ type: "message.removed", properties: { sessionID: "root", messageID: next.id } })
+    expect(store.data.session_message.root.map((message) => message.id)).toEqual([user.id, assistant.id])
+  })
+
   test("backfills an assistant-only initial page through its user root", async () => {
     const user = userMessage("message-1")
     const assistants = [assistantMessage("message-2", user.id), assistantMessage("message-3", user.id)]
diff --git a/packages/app/src/context/server-session.ts b/packages/app/src/context/server-session.ts
index 5a892f79158f..6bf0f47f5cc2 100644
--- a/packages/app/src/context/server-session.ts
+++ b/packages/app/src/context/server-session.ts
@@ -1,5 +1,6 @@
 import { Binary } from "@opencode-ai/core/util/binary"
 import { retry } from "@opencode-ai/core/util/retry"
+import type { MessageApi, OpenCodeEvent, SessionApi, SessionMessageInfo } from "@opencode-ai/client/promise"
 import type {
   Message,
   OpencodeClient,
@@ -8,15 +9,18 @@ import type {
   QuestionRequest,
   Session,
   SessionStatus,
-  SnapshotFileDiff,
   Todo,
 } from "@opencode-ai/sdk/v2/client"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import { batch } from "solid-js"
 import { createStore, produce, reconcile } from "solid-js/store"
-import { diffs as cleanDiffs, message as cleanMessage } from "@/utils/diffs"
+import { message as cleanMessage } from "@/utils/diffs"
 import { sessionNotFoundError } from "@/utils/server-errors"
 import { rootSession } from "@/utils/session-route"
+import { normalizeSessionInfo } from "@/utils/session"
+import { normalizeSessionMessages } from "@/utils/session-message"
 import { dropSessionCaches, pickSessionCacheEvictions, SESSION_CACHE_LIMIT } from "./global-sync/session-cache"
+import { createV2SessionReducer, type V2SessionReduction } from "./server-session-v2-reducer"
 
 const cmp = (a: string, b: string) => (a < b ? -1 : a > b ? 1 : 0)
 const cmpMessage = (a: Message, b: Message) => a.time.created - b.time.created || cmp(a.id, b.id)
@@ -36,10 +40,37 @@ type OptimisticItem = {
 type MessagePage = {
   session: Message[]
   part: { id: string; part: Part[] }[]
+  source?: SessionMessageInfo[]
+  sourceMode?: "latest" | "older"
+  projectSource?: boolean
   cursor?: string
   complete: boolean
 }
 
+function legacyMessageSource(items: { info: Message; parts: Part[] }[]): SessionMessageInfo[] {
+  return items
+    .slice()
+    .sort((a, b) => cmp(a.info.id, b.info.id))
+    .map((item) => {
+      if (item.info.role === "user") {
+        return {
+          id: item.info.id,
+          type: "user" as const,
+          text: item.parts.flatMap((part) => (part.type === "text" ? [part.text] : [])).join("\n"),
+          time: item.info.time,
+        }
+      }
+      return {
+        id: item.info.id,
+        type: "assistant" as const,
+        agent: item.info.agent ?? item.info.mode,
+        model: { id: item.info.modelID, providerID: item.info.providerID, variant: item.info.variant },
+        content: [],
+        time: item.info.time,
+      }
+    })
+}
+
 // Most markers describe the current HTTP attempt; deltaParts persists non-durable stream state across retries.
 type MessageLoadState = {
   touchedMessages: Set<string>
@@ -52,6 +83,7 @@ type MessageLoadState = {
   optimisticParts: Map<string, Set<string>>
   orphanParents: Set<string>
   clearedMessageParts: Set<string>
+  touchedSource: Set<string>
 }
 
 type MessageLoadBaseline = Pick<
@@ -137,15 +169,25 @@ function reconcileFetched<T extends { id: string }>(
   return [...result.values()].sort((a, b) => cmp(a.id, b.id))
 }
 
-export function createServerSession(client: OpencodeClient, options?: { retry?: typeof retry }) {
+type ServerSessionOptions = { retry?: typeof retry; protocol?: Promise<"v1" | "v2"> }
+
+export function createServerSession(
+  client: OpencodeClient,
+  sessionApiOrOptions?: SessionApi | ServerSessionOptions,
+  messageApi?: MessageApi,
+  currentOptions?: ServerSessionOptions,
+) {
+  const sessionApi = messageApi ? (sessionApiOrOptions as SessionApi) : undefined
+  const options = messageApi ? currentOptions : (sessionApiOrOptions as ServerSessionOptions | undefined)
   const [data, setData] = createStore({
     info: {} as Record<string, Session | undefined>,
     session_status: {} as Record<string, SessionStatus>,
-    session_diff: {} as Record<string, SnapshotFileDiff[]>,
+    session_diff: {} as Record<string, FileDiffInfo[]>,
     todo: {} as Record<string, Todo[]>,
     permission: {} as Record<string, PermissionRequest[]>,
     question: {} as Record<string, QuestionRequest[]>,
     message: {} as Record<string, Message[]>,
+    session_message: {} as Record<string, SessionMessageInfo[]>,
     part: {} as Record<string, Part[]>,
     part_text_accum_delta: {} as Record<string, string>,
     session_working(id: string) {
@@ -154,9 +196,9 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
   })
   const requests = new Map<string, Promise<Session>>()
   const inflight = new Map<string, Promise<void>>()
-  const inflightDiff = new Map<string, Promise<void>>()
   const inflightTodo = new Map<string, Promise<void>>()
   const optimistic = new Map<string, Map<string, OptimisticItem>>()
+  const v2 = createV2SessionReducer()
   const messageLoads = new Map<string, MessageLoadState>()
   const pendingParts = new Map<string, Map<string, Set<string>>>()
   const orphanParts = new Map<string, Set<string>>()
@@ -191,6 +233,16 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
     at: {} as Record<string, number | undefined>,
   })
 
+  const indexLegacyMessage = (message: Message) => {
+    const current = data.session_message[message.sessionID] ?? []
+    if (current.some((item) => item.id === message.id)) return
+    setData(
+      "session_message",
+      message.sessionID,
+      reconcile([...current, ...legacyMessageSource([{ info: message, parts: [] }])]),
+    )
+  }
+
   const remember = (session: Session) => {
     setData("info", session.id, reconcile(session))
     infoSeen.delete(session.id)
@@ -200,7 +252,6 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
         ...pinned.keys(),
         ...requests.keys(),
         ...inflight.keys(),
-        ...inflightDiff.keys(),
         ...inflightTodo.keys(),
         ...messageLoads.keys(),
         ...optimistic.keys(),
@@ -242,27 +293,31 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
     const pending = requests.get(sessionID)
     if (pending) return pending
     const active = generation(sessionID)
-    const request = client.session.get({ sessionID }).then((result) => {
-      if (!result.data) throw sessionNotFoundError(sessionID)
-      if (generations.get(sessionID) !== active) return result.data
-      return remember(result.data)
+    const request = sessionApi
+      ? sessionApi.get({ sessionID }).then(normalizeSessionInfo)
+      : client.session.get({ sessionID }).then((result) => {
+          if (!result.data) throw sessionNotFoundError(sessionID)
+          return result.data
+        })
+    const resolved = request.then((result) => {
+      if (generations.get(sessionID) !== active) return result
+      return remember(result)
     })
-    requests.set(sessionID, request)
+    requests.set(sessionID, resolved)
     const cleanup = () => {
-      if (requests.get(sessionID) === request) requests.delete(sessionID)
+      if (requests.get(sessionID) === resolved) requests.delete(sessionID)
       if (
         generations.get(sessionID) === active &&
         !data.info[sessionID] &&
         !requests.has(sessionID) &&
         !messageLoads.has(sessionID) &&
         !inflight.has(sessionID) &&
-        !inflightDiff.has(sessionID) &&
         !inflightTodo.has(sessionID)
       )
         generations.delete(sessionID)
     }
-    void request.then(cleanup, cleanup)
-    return request
+    void resolved.then(cleanup, cleanup)
+    return resolved
   }
 
   const peekLineage = (sessionID: string) => {
@@ -419,9 +474,9 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
       clearOptimistic(sessionID)
       requests.delete(sessionID)
       inflight.delete(sessionID)
-      inflightDiff.delete(sessionID)
       inflightTodo.delete(sessionID)
       messageLoads.delete(sessionID)
+      v2.clear(sessionID)
       pendingParts.delete(sessionID)
       orphanParts.delete(sessionID)
       removedMessages.delete(sessionID)
@@ -449,7 +504,6 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
       ...pinned.keys(),
       ...requests.keys(),
       ...inflight.keys(),
-      ...inflightDiff.keys(),
       ...inflightTodo.keys(),
       ...messageLoads.keys(),
       ...optimistic.keys(),
@@ -470,6 +524,25 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
     )
 
   const fetchMessages = async (sessionID: string, limit: number, before?: string, onAttempt?: () => void) => {
+    if (messageApi && (await options?.protocol) !== "v1") {
+      const response = await (options?.retry ?? retry)(() => {
+        onAttempt?.()
+        return messageApi.list(before ? { sessionID, limit, cursor: before } : { sessionID, limit, order: "desc" })
+      })
+      const source = [...response.data].reverse()
+      const normalized = normalizeSessionMessages(sessionID, source)
+      return {
+        session: normalized.messages.sort((a, b) => cmp(a.id, b.id)),
+        part: [...normalized.parts.entries()]
+          .map(([id, part]) => ({ id, part: part.sort((a, b) => cmp(a.id, b.id)) }))
+          .sort((a, b) => cmp(a.id, b.id)),
+        source,
+        sourceMode: before ? ("older" as const) : ("latest" as const),
+        projectSource: true,
+        cursor: response.cursor.next ?? undefined,
+        complete: response.data.length === 0,
+      }
+    }
     const response = await (options?.retry ?? retry)(() => {
       onAttempt?.()
       return client.session.messages({ sessionID, limit, before })
@@ -481,12 +554,24 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
         id: item.info.id,
         part: item.parts.filter((part) => !!part?.id).sort((a, b) => cmp(a.id, b.id)),
       })),
+      source: legacyMessageSource(items),
+      sourceMode: before ? ("older" as const) : ("latest" as const),
       cursor: response.response.headers.get("x-next-cursor") ?? undefined,
       complete: !response.response.headers.get("x-next-cursor"),
     }
   }
 
   const fetchMessage = async (sessionID: string, messageID: string, onAttempt?: () => void) => {
+    if (sessionApi && (await options?.protocol) !== "v1") {
+      const response = await (options?.retry ?? retry)(() => {
+        onAttempt?.()
+        return sessionApi.message({ sessionID, messageID })
+      })
+      const normalized = normalizeSessionMessages(sessionID, [response])
+      const message = normalized.messages[0]
+      if (!message) throw new Error(`Message not found: ${messageID}`)
+      return { message, parts: normalized.parts.get(messageID) ?? [] }
+    }
     const response = await (options?.retry ?? retry)(() => {
       onAttempt?.()
       return client.session.message({ sessionID, messageID })
@@ -571,7 +656,31 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
     preserveUnfetched: boolean | ((message: Message) => boolean),
     cleanupOrphans: boolean,
   ) => {
-    const merged = mergeOptimisticPage(page, [...(optimistic.get(sessionID)?.values() ?? [])])
+    const source = page.source
+      ? (() => {
+          const incoming = new Map(page.source.map((message) => [message.id, message]))
+          const existing = data.session_message[sessionID] ?? []
+          const current = existing.filter((message) => !incoming.has(message.id))
+          const live = new Map(existing.map((message) => [message.id, message]))
+          return (page.sourceMode === "older" ? [...page.source, ...current] : [...current, ...page.source]).map(
+            (message) => (load?.touchedSource.has(message.id) ? (live.get(message.id) ?? message) : message),
+          )
+        })()
+      : undefined
+    const projected =
+      page.projectSource && source
+        ? (() => {
+            const normalized = normalizeSessionMessages(sessionID, source)
+            return {
+              ...page,
+              session: normalized.messages.sort((a, b) => cmp(a.id, b.id)),
+              part: [...normalized.parts.entries()]
+                .map(([id, part]) => ({ id, part: part.sort((a, b) => cmp(a.id, b.id)) }))
+                .sort((a, b) => cmp(a.id, b.id)),
+            }
+          })()
+        : page
+    const merged = mergeOptimisticPage(projected, [...(optimistic.get(sessionID)?.values() ?? [])])
     merged.observed.forEach((item) => {
       if (!load?.clearedMessageParts.has(item.messageID)) confirmOptimistic(sessionID, item.messageID, item.parts)
     })
@@ -583,6 +692,7 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
       preserveUnfetched,
     })
     batch(() => {
+      if (source) setData("session_message", sessionID, reconcile(source))
       const messageIDs = replaceMessages(sessionID, messages)
       replaceParts(sessionID, merged.part, messageIDs, load)
       const orphans = orphanParts.get(sessionID)
@@ -613,6 +723,7 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
       optimisticParts: new Map(),
       orphanParents: new Set(),
       clearedMessageParts: new Set(),
+      touchedSource: new Set(),
     }
     messageLoads.set(sessionID, load)
     setMeta("loading", sessionID, true)
@@ -747,6 +858,109 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
       return properties.part.sessionID
   }
 
+  const projectV2 = (reduction: V2SessionReduction) => {
+    reduction.touched.forEach((messageID) => messageLoads.get(reduction.sessionID)?.touchedSource.add(messageID))
+    setData("session_message", reduction.sessionID, reconcile(reduction.messages))
+    if (reduction.touched.length === 0) return
+
+    const touched = new Set(reduction.touched)
+    let parentID: string | undefined
+    for (const message of reduction.messages) {
+      if (message.type === "user" || (message.type === "synthetic" && message.description?.trim()))
+        parentID = message.id
+      if (message.type === "shell") {
+        if (touched.has(message.id)) touched.add(`${message.id}:assistant`)
+        parentID = undefined
+      }
+      if (message.type === "assistant" && touched.has(message.id) && parentID) touched.add(parentID)
+      if (message.type === "compaction" && touched.has(message.id) && parentID) touched.add(parentID)
+    }
+
+    const normalized = normalizeSessionMessages(reduction.sessionID, reduction.messages)
+    batch(() => {
+      for (const message of normalized.messages) {
+        if (!touched.has(message.id)) continue
+        apply({ type: "message.updated", properties: { sessionID: reduction.sessionID, info: message } })
+      }
+      for (const messageID of touched) {
+        const next = normalized.parts.get(messageID) ?? []
+        const nextIDs = new Set(next.map((part) => part.id))
+        for (const part of next) {
+          apply({ type: "message.part.updated", properties: { sessionID: reduction.sessionID, part } })
+        }
+        for (const part of data.part[messageID] ?? []) {
+          if (nextIDs.has(part.id)) continue
+          apply({
+            type: "message.part.removed",
+            properties: { sessionID: reduction.sessionID, messageID, partID: part.id },
+          })
+        }
+      }
+    })
+  }
+
+  const hydrateV2Message = (sessionID: string, messageID: string) => {
+    if (!sessionApi) return
+    void sessionApi
+      .message({ sessionID, messageID })
+      .then((message) => {
+        const current = data.session_message[sessionID] ?? []
+        const messages = [...current.filter((item) => item.id !== message.id), message].sort((a, b) => cmp(a.id, b.id))
+        projectV2({ sessionID, messages, touched: [message.id] })
+      })
+      .catch(() => {})
+  }
+
+  const applyV2 = (event: OpenCodeEvent) => {
+    if (!("data" in event) || !("sessionID" in event.data) || typeof event.data.sessionID !== "string") return
+    const sessionID = event.data.sessionID
+    const reduction = v2.reduce(data.session_message[sessionID] ?? [], event)
+    if (reduction) {
+      projectV2(reduction)
+      if (reduction.missing) hydrateV2Message(sessionID, reduction.missing)
+    }
+
+    const info = data.info[sessionID]
+    if (event.type === "session.renamed" && info)
+      remember({ ...info, title: event.data.title, time: { ...info.time, updated: event.created } })
+    if (event.type === "session.moved" && info)
+      remember({
+        ...info,
+        projectID: event.data.projectID ?? info.projectID,
+        workspaceID: event.data.location.workspaceID,
+        directory: event.data.location.directory,
+        path: event.data.subpath,
+        time: { ...info.time, updated: event.created },
+      })
+    if (event.type === "session.usage.updated" && info)
+      remember({ ...info, cost: event.data.cost, tokens: event.data.tokens })
+    if (event.type === "session.archived") {
+      if (info) remember({ ...info, time: { ...info.time, archived: event.created, updated: event.created } })
+      evict([sessionID])
+    }
+    if (event.type === "session.execution.started") setData("session_status", sessionID, { type: "busy" })
+    if (
+      event.type === "session.execution.succeeded" ||
+      event.type === "session.execution.failed" ||
+      event.type === "session.execution.interrupted"
+    )
+      setData("session_status", sessionID, { type: "idle" })
+    if (event.type === "session.retry.scheduled")
+      setData("session_status", sessionID, {
+        type: "retry",
+        attempt: event.data.attempt,
+        message: event.data.error.message,
+        next: event.data.at,
+      })
+    if (event.type === "session.forked") void resolve(sessionID, { force: true }).catch(() => {})
+    if (
+      event.type === "session.revert.staged" ||
+      event.type === "session.revert.cleared" ||
+      event.type === "session.revert.committed"
+    )
+      void resolve(sessionID, { force: true }).catch(() => {})
+  }
+
   const apply = (event: { type: string; properties?: unknown }) => {
     const eventID = eventSessionID(event)
     if (eventID) {
@@ -770,7 +984,9 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
         return
       }
       case "session.deleted": {
-        const sessionID = (event.properties as { info: Session }).info.id
+        const properties = event.properties as { sessionID?: string; info?: Session }
+        const sessionID = properties.info?.id ?? properties.sessionID
+        if (!sessionID) return
         infoSeen.delete(sessionID)
         setData(
           "info",
@@ -779,11 +995,6 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
         evict([sessionID])
         return
       }
-      case "session.diff": {
-        const props = event.properties as { sessionID: string; diff: SnapshotFileDiff[] }
-        setData("session_diff", props.sessionID, reconcile(cleanDiffs(props.diff), { key: "file" }))
-        return
-      }
       case "todo.updated": {
         const props = event.properties as { sessionID: string; todos: Todo[] }
         setData("todo", props.sessionID, reconcile(props.todos, { key: "id" }))
@@ -796,6 +1007,7 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
       }
       case "message.updated": {
         const info = cleanMessage((event.properties as { info: Message }).info)
+        indexLegacyMessage(info)
         const load = messageLoads.get(info.sessionID)
         load?.touchedMessages.add(info.id)
         load?.removedMessages.delete(info.id)
@@ -828,6 +1040,9 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
       }
       case "message.removed": {
         const props = event.properties as { sessionID: string; messageID: string }
+        setData("session_message", props.sessionID, (messages) =>
+          messages?.filter((message) => message.id !== props.messageID),
+        )
         const load = messageLoads.get(props.sessionID)
         load?.touchedMessages.add(props.messageID)
         load?.removedMessages.add(props.messageID)
@@ -1140,23 +1355,16 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
         setData(produce((draft) => deleteMessageParts(draft, input.messageID)))
       },
     },
-    diff(sessionID: string, options?: { force?: boolean }) {
+    async todo(sessionID: string, request?: { force?: boolean }) {
       touch(sessionID)
-      if (data.session_diff[sessionID] !== undefined && !options?.force) return Promise.resolve()
-      return runInflight(inflightDiff, sessionID, () => {
-        const active = generation(sessionID)
-        return retry(() => client.session.diff({ sessionID })).then((result) => {
-          if (generations.get(sessionID) !== active) return
-          setData("session_diff", sessionID, reconcile(cleanDiffs(result.data), { key: "file" }))
-        })
-      })
-    },
-    todo(sessionID: string, options?: { force?: boolean }) {
-      touch(sessionID)
-      if (data.todo[sessionID] !== undefined && !options?.force) return Promise.resolve()
+      if (data.todo[sessionID] !== undefined && !request?.force) return
+      if ((await options?.protocol) === "v2") {
+        setData("todo", sessionID, [])
+        return
+      }
       return runInflight(inflightTodo, sessionID, () => {
         const active = generation(sessionID)
-        return retry(() => client.session.todo({ sessionID })).then((result) => {
+        return (options?.retry ?? retry)(() => client.session.todo({ sessionID })).then((result) => {
           if (generations.get(sessionID) !== active) return
           setData("todo", sessionID, reconcile(result.data ?? [], { key: "id" }))
         })
@@ -1190,6 +1398,7 @@ export function createServerSession(client: OpencodeClient, options?: { retry?:
       if (count && count > 1) pinned.set(sessionID, count - 1)
     },
     apply,
+    applyV2,
   }
 }
 
diff --git a/packages/app/src/context/server-sync.test.ts b/packages/app/src/context/server-sync.test.ts
index 93e9c4175557..3614d57f666f 100644
--- a/packages/app/src/context/server-sync.test.ts
+++ b/packages/app/src/context/server-sync.test.ts
@@ -1,6 +1,108 @@
 import { describe, expect, test } from "bun:test"
+import type { OpencodeClient } from "@opencode-ai/sdk/v2/client"
+import type {
+  McpApi,
+  McpListInput,
+  McpResourceCatalogInput,
+  SessionApi,
+  SessionInfo,
+  SessionListInput,
+} from "@opencode-ai/client/promise"
+import { QueryClient } from "@tanstack/solid-query"
 import { canDisposeDirectory, pickDirectoriesToEvict } from "./global-sync/eviction"
-import { estimateRootSessionTotal, loadRootSessionsWithFallback } from "./global-sync/session-load"
+import { estimateRootSessionTotal, loadRootSessions } from "./global-sync/session-load"
+import {
+  loadActiveSessionsQuery,
+  loadMcpQuery,
+  loadMcpResourcesQuery,
+  seedActiveSessionStatuses,
+} from "./server-sync"
+import { ServerScope } from "@/utils/server-scope"
+import { createServerSession } from "./server-session"
+
+describe("MCP queries", () => {
+  test("loads current servers for the requested location", async () => {
+    const calls: unknown[] = []
+    const queryClient = new QueryClient()
+    const result = await queryClient.fetchQuery(
+      loadMcpQuery(ServerScope.local, "/project", {
+        list: async (input: McpListInput = {}) => {
+          calls.push(input)
+          return {
+            location: { directory: "/project", project: { id: "project", directory: "/project" } },
+            data: [
+              { name: "docs", status: { status: "connected" } },
+              { name: "search", status: { status: "pending" } },
+            ],
+          }
+        },
+      } as unknown as McpApi),
+    )
+
+    expect(calls).toEqual([{ location: { directory: "/project" } }])
+    expect(result).toEqual({ docs: { status: "connected" }, search: { status: "pending" } })
+  })
+
+  test("loads and keys the current resource catalog", async () => {
+    const calls: unknown[] = []
+    const queryClient = new QueryClient()
+    const result = await queryClient.fetchQuery(
+      loadMcpResourcesQuery(ServerScope.local, "/project", {
+        resource: {
+          catalog: async (input: McpResourceCatalogInput = {}) => {
+            calls.push(input)
+            return {
+              location: { directory: "/project", project: { id: "project", directory: "/project" } },
+              data: {
+                resources: [{ server: "docs", name: "Guide", uri: "docs://guide" }],
+                templates: [],
+              },
+            }
+          },
+        },
+      } as unknown as McpApi),
+    )
+
+    expect(calls).toEqual([{ location: { directory: "/project" } }])
+    expect(result).toEqual({ "docs:docs://guide": { server: "docs", name: "Guide", uri: "docs://guide" } })
+  })
+})
+
+describe("active session query", () => {
+  test("loads active sessions once per server cache", async () => {
+    let calls = 0
+    const queryClient = new QueryClient()
+    const options = loadActiveSessionsQuery(ServerScope.local, {
+      active: async () => {
+        calls++
+        return { ses_running: { type: "running" } }
+      },
+    })
+
+    expect(await queryClient.fetchQuery(options)).toEqual({ ses_running: { type: "running" } })
+    expect(await queryClient.fetchQuery(options)).toEqual({ ses_running: { type: "running" } })
+    expect(calls).toBe(1)
+    expect([...options.queryKey]).toEqual([ServerScope.local, "activeSessions"])
+  })
+
+  test("does not overwrite statuses already written by events", () => {
+    const session = createServerSession({} as OpencodeClient)
+    session.set("session_status", "ses_retry", { type: "retry", attempt: 2, message: "retrying", next: 10 })
+
+    seedActiveSessionStatuses(session, {
+      ses_running: { type: "running" },
+      ses_retry: { type: "running" },
+    })
+
+    expect(session.data.session_status.ses_running).toEqual({ type: "busy" })
+    expect(session.data.session_status.ses_retry).toEqual({
+      type: "retry",
+      attempt: 2,
+      message: "retrying",
+      next: 10,
+    })
+  })
+})
 
 describe("pickDirectoriesToEvict", () => {
   test("keeps pinned stores and evicts idle stores", () => {
@@ -23,46 +125,57 @@ describe("pickDirectoriesToEvict", () => {
   })
 })
 
-describe("loadRootSessionsWithFallback", () => {
-  test("uses limited roots query when supported", async () => {
-    const calls: Array<{ directory: string; roots: true; limit?: number }> = []
+describe("loadRootSessions", () => {
+  test("loads and normalizes a limited page of root sessions", async () => {
+    const calls: SessionListInput[] = []
 
-    const result = await loadRootSessionsWithFallback({
+    const result = await loadRootSessions({
+      api: {
+        list: async (query = {}) => {
+          calls.push(query)
+          return { data: [sessionInfo("session-1")], cursor: {} }
+        },
+      } satisfies Pick<SessionApi, "list">,
       directory: "dir",
       limit: 10,
-      list: async (query) => {
-        calls.push(query)
-        return { data: [] }
-      },
     })
 
-    expect(result.data).toEqual([])
+    expect(result.data).toEqual([
+      expect.objectContaining({ id: "session-1", directory: "dir", slug: "session-1", version: "" }),
+    ])
     expect(result.limited).toBe(true)
-    expect(calls).toEqual([{ directory: "dir", roots: true, limit: 10 }])
+    expect(calls).toEqual([{ directory: "dir", parentID: null, limit: 10, order: "desc" }])
   })
 
-  test("falls back to full roots query on limited-query failure", async () => {
-    const calls: Array<{ directory: string; roots: true; limit?: number }> = []
-
-    const result = await loadRootSessionsWithFallback({
-      directory: "dir",
-      limit: 25,
-      list: async (query) => {
-        calls.push(query)
-        if (query.limit) throw new Error("unsupported")
-        return { data: [] }
-      },
-    })
-
-    expect(result.data).toEqual([])
-    expect(result.limited).toBe(false)
-    expect(calls).toEqual([
-      { directory: "dir", roots: true, limit: 25 },
-      { directory: "dir", roots: true },
-    ])
+  test("propagates list failures", () => {
+    expect(
+      loadRootSessions({
+        api: {
+          list: async () => {
+            throw new Error("failed")
+          },
+        } satisfies Pick<SessionApi, "list">,
+        directory: "dir",
+        limit: 25,
+      }),
+    ).rejects.toThrow("failed")
   })
 })
 
+function sessionInfo(id: string) {
+  return {
+    id,
+    projectID: "project-1",
+    agent: "build",
+    model: { id: "model-1", providerID: "provider-1" },
+    cost: 0,
+    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    time: { created: 1, updated: 1 },
+    title: id,
+    location: { directory: "dir" },
+  } as SessionInfo
+}
+
 describe("estimateRootSessionTotal", () => {
   test("keeps exact total for full fetches", () => {
     expect(estimateRootSessionTotal({ count: 42, limit: 10, limited: false })).toBe(42)
diff --git a/packages/app/src/context/server-sync.tsx b/packages/app/src/context/server-sync.tsx
index 05806fba5477..5ce530bbb0eb 100644
--- a/packages/app/src/context/server-sync.tsx
+++ b/packages/app/src/context/server-sync.tsx
@@ -1,10 +1,10 @@
 import type {
   Config,
-  McpResource,
   OpencodeClient,
   Path,
   Project,
   ProviderAuthResponse,
+  SessionStatus,
 } from "@opencode-ai/sdk/v2/client"
 import { showToast } from "@/utils/toast"
 import { getFilename } from "@opencode-ai/core/util/path"
@@ -18,6 +18,7 @@ import {
   bootstrapGlobal,
   clearProviderRev,
   loadAgentsQuery,
+  loadCommands,
   loadGlobalConfigQuery,
   loadPathQuery,
   loadProjectsQuery,
@@ -26,12 +27,13 @@ import {
 } from "./global-sync/bootstrap"
 import { createChildStoreManager } from "./global-sync/child-store"
 import { applyDirectoryEvent, applyGlobalEvent } from "./global-sync/event-reducer"
-import { estimateRootSessionTotal, loadRootSessionsWithFallback } from "./global-sync/session-load"
+import { estimateRootSessionTotal, loadRootSessions, loadRootSessionsV1 } from "./global-sync/session-load"
 import { trimSessions } from "./global-sync/session-trim"
 import type { ProjectMeta } from "./global-sync/types"
 import { SESSION_RECENT_LIMIT } from "./global-sync/types"
 import { formatServerError } from "@/utils/server-errors"
 import { queryOptions, useMutation, useQueries, useQuery, useQueryClient } from "@tanstack/solid-query"
+import type { SolidQueryOptions } from "@tanstack/solid-query"
 import { createRefreshQueue } from "./global-sync/queue"
 import { directoryKey } from "./global-sync/utils"
 import { PathKey } from "@/utils/path-key"
@@ -45,8 +47,18 @@ import { retry } from "@opencode-ai/core/util/retry"
 import type { ServerScope } from "@/utils/server-scope"
 import { createHomeSessionIndexCache } from "./global-sync/home-session-index"
 import { persisted } from "@/utils/persist"
+import type { ServerApi } from "@/utils/server"
+import type {
+  McpListInput,
+  McpListOutput,
+  McpResource,
+  McpResourceCatalogInput,
+  McpResourceCatalogOutput,
+  McpServer,
+  SessionActiveOutput,
+} from "@opencode-ai/client/promise"
 import { toggleMcp } from "./global-sync/mcp"
-import { createServerSession } from "./server-session"
+import { createServerSession, type ServerSession } from "./server-session"
 
 type GlobalStore = {
   ready: boolean
@@ -59,16 +71,76 @@ type GlobalStore = {
   reload: undefined | "pending" | "complete"
 }
 
-export const loadMcpQuery = (scope: ServerScope, directory: string, sdk: OpencodeClient) =>
-  queryOptions({
+type McpListApi = {
+  readonly list: (input?: McpListInput) => Promise<McpListOutput>
+}
+
+type McpResourceApi = {
+  readonly resource: {
+    readonly catalog: (input?: McpResourceCatalogInput) => Promise<McpResourceCatalogOutput>
+  }
+}
+
+type ApiQueryOptions<T, K extends readonly unknown[]> = SolidQueryOptions<T, Error, T, K> & {
+  initialData?: undefined
+  queryKey: K
+}
+
+type SessionActiveApi = {
+  readonly active: () => Promise<SessionActiveOutput>
+}
+
+export const loadMcpQuery = (
+  scope: ServerScope,
+  directory: string,
+  api: McpListApi,
+  legacy?: OpencodeClient,
+  protocol?: Promise<"v1" | "v2">,
+): ApiQueryOptions<Record<string, McpServer["status"]>, readonly [ServerScope, string, "mcp"]> =>
+  queryOptions<
+    Record<string, McpServer["status"]>,
+    Error,
+    Record<string, McpServer["status"]>,
+    readonly [ServerScope, string, "mcp"]
+  >({
     queryKey: [scope, directory, "mcp"] as const,
-    queryFn: () => sdk.mcp.status().then((r) => r.data ?? {}),
+    queryFn: async () => {
+      if ((await protocol) === "v1" && legacy) return (await legacy.mcp.status()).data ?? {}
+      return api
+        .list({ location: { directory } })
+        .then((result) => Object.fromEntries(result.data.map((server) => [server.name, server.status])))
+    },
   })
 
-export const loadMcpResourcesQuery = (scope: ServerScope, directory: string, sdk: OpencodeClient) =>
-  queryOptions<Record<string, McpResource>>({
+export const loadMcpResourcesQuery = (
+  scope: ServerScope,
+  directory: string,
+  api: McpResourceApi,
+  legacy?: OpencodeClient,
+  protocol?: Promise<"v1" | "v2">,
+): ApiQueryOptions<Record<string, McpResource>, readonly [ServerScope, string, "mcpResources"]> =>
+  queryOptions<
+    Record<string, McpResource>,
+    Error,
+    Record<string, McpResource>,
+    readonly [ServerScope, string, "mcpResources"]
+  >({
     queryKey: [scope, directory, "mcpResources"] as const,
-    queryFn: () => sdk.experimental.resource.list().then((r) => r.data ?? {}),
+    queryFn: async () => {
+      if ((await protocol) === "v1" && legacy) {
+        return Object.fromEntries(
+          Object.entries((await legacy.experimental.resource.list()).data ?? {}).map(([key, resource]) => [
+            key,
+            { ...resource, server: resource.client },
+          ]),
+        )
+      }
+      return api.resource
+        .catalog({ location: { directory } })
+        .then((result) =>
+          Object.fromEntries(result.data.resources.map((resource) => [`${resource.server}:${resource.uri}`, resource])),
+        )
+    },
     placeholderData: {},
   })
 
@@ -78,22 +150,51 @@ export const loadLspQuery = (scope: ServerScope, directory: string, sdk: Opencod
     queryFn: () => sdk.lsp.status().then((r) => r.data ?? []),
   })
 
+export const loadActiveSessionsQuery = (
+  scope: ServerScope,
+  api: SessionActiveApi,
+): ApiQueryOptions<SessionActiveOutput, readonly [ServerScope, "activeSessions"]> =>
+  queryOptions<SessionActiveOutput, Error, SessionActiveOutput, readonly [ServerScope, "activeSessions"]>({
+    queryKey: [scope, "activeSessions"] as const,
+    queryFn: () => api.active(),
+    enabled: false,
+    staleTime: Number.POSITIVE_INFINITY,
+    gcTime: Number.POSITIVE_INFINITY,
+    refetchOnMount: false,
+    refetchOnReconnect: false,
+    refetchOnWindowFocus: false,
+  })
+
+export function seedActiveSessionStatuses(
+  session: Pick<ServerSession, "data" | "set">,
+  active: SessionActiveOutput | Record<string, SessionStatus>,
+) {
+  for (const sessionID of Object.keys(active)) {
+    if (session.data.session_status[sessionID] !== undefined) continue
+    const status = active[sessionID]
+    session.set("session_status", sessionID, status?.type === "running" ? { type: "busy" } : status)
+  }
+}
+
 function makeQueryOptionsApi(
   scope: ServerScope,
   serverSDK: () => OpencodeClient,
+  serverAPI: ServerApi,
   sdkFor: (dir: PathKey) => OpencodeClient,
+  protocol: Promise<"v1" | "v2">,
 ) {
   return {
     globalConfig: () => loadGlobalConfigQuery(scope, serverSDK()),
-    projects: () => loadProjectsQuery(scope, serverSDK()),
+    projects: () => loadProjectsQuery(scope, serverAPI.project),
     providers: (directory: PathKey | null) =>
-      loadProvidersQuery(scope, directory, directory === null ? serverSDK() : sdkFor(directory)),
-    path: (directory: PathKey | null) =>
-      loadPathQuery(scope, directory, directory === null ? serverSDK() : sdkFor(directory)),
-    agents: (directory: PathKey) => loadAgentsQuery(scope, directory, sdkFor(directory)),
-    references: (directory: PathKey) => loadReferencesQuery(scope, directory, sdkFor(directory)),
-    mcp: (directory: PathKey) => loadMcpQuery(scope, directory, sdkFor(directory)),
-    mcpResources: (directory: PathKey) => loadMcpResourcesQuery(scope, directory, sdkFor(directory)),
+      loadProvidersQuery(scope, directory, serverAPI, directory ? sdkFor(directory) : serverSDK(), protocol),
+    path: (directory: PathKey | null) => loadPathQuery(scope, directory, serverAPI.path),
+    agents: (directory: PathKey) => loadAgentsQuery(scope, directory, serverAPI.agent, sdkFor(directory), protocol),
+    references: (directory: PathKey) =>
+      loadReferencesQuery(scope, directory, serverAPI.reference, sdkFor(directory), protocol),
+    mcp: (directory: PathKey) => loadMcpQuery(scope, directory, serverAPI.mcp, sdkFor(directory), protocol),
+    mcpResources: (directory: PathKey) =>
+      loadMcpResourcesQuery(scope, directory, serverAPI.mcp, sdkFor(directory), protocol),
     lsp: (directory: PathKey) => loadLspQuery(scope, directory, sdkFor(directory)),
     sessions: (directory: PathKey) => ({ queryKey: [scope, directory, "loadSessions"] as const }),
   }
@@ -122,11 +223,44 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
     return sdk
   }
 
-  const queryOptionsApi = makeQueryOptionsApi(serverSDK.scope, () => serverSDK.client, sdkFor)
+  const session = createServerSession(serverSDK.client, serverSDK.api.session, serverSDK.api.message, {
+    protocol: serverSDK.protocol,
+  })
+  const queryOptionsApi = makeQueryOptionsApi(
+    serverSDK.scope,
+    () => serverSDK.client,
+    serverSDK.api,
+    sdkFor,
+    serverSDK.protocol,
+  )
 
   const [configQuery, providerQuery, pathQuery] = useQueries(() => ({
     queries: [queryOptionsApi.globalConfig(), queryOptionsApi.providers(null), queryOptionsApi.path(null)],
   }))
+  const activeSessionsQuery = useQuery(() =>
+    loadActiveSessionsQuery(serverSDK.scope, {
+      active: async () => {
+        if ((await serverSDK.protocol) === "v1") {
+          const statuses = (await serverSDK.client.session.status()).data ?? {}
+          for (const [sessionID, status] of Object.entries(statuses)) {
+            session.set("session_status", sessionID, reconcile(status))
+            void session.resolve(sessionID).catch(() => undefined)
+          }
+          return Object.fromEntries(
+            Object.entries(statuses).flatMap(([sessionID, status]) =>
+              status.type === "idle" ? [] : [[sessionID, { type: "running" as const }]],
+            ),
+          )
+        }
+        const active = await serverSDK.api.session.active()
+        seedActiveSessionStatuses(session, active)
+        for (const sessionID of Object.keys(active)) {
+          void session.resolve(sessionID).catch(() => undefined)
+        }
+        return active
+      },
+    }),
+  )
 
   const [globalStore, setGlobalStore] = createStore<GlobalStore>({
     get ready() {
@@ -183,6 +317,8 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
     queryFn: async () => {
       await bootstrapGlobal({
         serverSDK: serverSDK.client,
+        serverAPI: serverSDK.api,
+        protocol: serverSDK.protocol,
         scope: serverSDK.scope,
         requestFailedTitle: language.t("common.requestFailed"),
         translate: language.t,
@@ -212,8 +348,6 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
     bootstrapInstance,
   })
 
-  const session = createServerSession(serverSDK.client)
-
   const children = createChildStoreManager({
     owner,
     scope: serverSDK.scope,
@@ -224,17 +358,15 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
       void bootstrapInstance(directory)
     },
     onMcp: (directory, setStore) => {
-      void retry(() =>
-        sdkFor(directory)
-          .command.list()
-          .then((x) => setStore("command", x.data ?? [])),
-      ).catch((err) => {
-        showToast({
-          variant: "error",
-          title: language.t("toast.project.reloadFailed.title", { project: getFilename(directory) }),
-          description: formatServerError(err, language.t),
+      void loadCommands(directory, serverSDK.api.command, sdkFor(directory), serverSDK.protocol)
+        .then((commands) => setStore("command", commands))
+        .catch((err) => {
+          showToast({
+            variant: "error",
+            title: language.t("toast.project.reloadFailed.title", { project: getFilename(directory) }),
+            description: formatServerError(err, language.t),
+          })
         })
-      })
     },
     onDispose: (directory) => {
       const key = directoryKey(directory)
@@ -279,11 +411,12 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
       .fetchQuery({
         ...queryOptionsApi.sessions(key),
         queryFn: () =>
-          loadRootSessionsWithFallback({
-            directory,
-            limit,
-            list: (query) => serverSDK.client.session.list(query),
-          })
+          serverSDK.protocol
+            .then((protocol) =>
+              protocol === "v1"
+                ? loadRootSessionsV1({ client: sdkFor(directory), directory, limit })
+                : loadRootSessions({ api: serverSDK.api.session, directory, limit }),
+            )
             .then((x) => {
               const nonArchived = (x.data ?? [])
                 .filter((s) => !!s?.id)
@@ -353,6 +486,7 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
           provider: globalStore.provider,
         },
         sdk,
+        api: serverSDK.api,
         store: child[0],
         setStore: child[1],
         vcsCache: cache,
@@ -360,6 +494,7 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
         translate: language.t,
         queryClient,
         session,
+        protocol: serverSDK.protocol,
       })
     })
 
@@ -371,12 +506,31 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
     return promise
   }
 
+  const indexSession = (info: Parameters<typeof session.remember>[0]) => {
+    const key = directoryKey(info.directory)
+    const existing = children.children[key]
+    if (!existing) return
+    applyDirectoryEvent({
+      event: { type: "session.created", properties: { info } },
+      directory: key,
+      store: existing[0],
+      setStore: existing[1],
+      push: queue.push,
+      retainedLimit: sessionMeta.get(key)?.limit,
+      sessionContent: false,
+      permission: session.data.permission,
+      loadLsp() {},
+    })
+  }
+
   const unsub = serverSDK.event.listen((e) => {
     const directory = e.name
     const key = directoryKey(directory)
     const event = e.details
+    const eventType: string = event.type
     const recent = bootingRoot || Date.now() - bootedAt < 1500
 
+    if (event.current) session.applyV2(event.current)
     session.apply(event)
     if (event.type === "session.created" || event.type === "session.updated" || event.type === "session.deleted") {
       homeSessions.apply(event)
@@ -384,6 +538,8 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
     homeSessions.refresh(event.type)
 
     if (directory === "global") {
+      if (eventType === "server.connected" && activeSessionsQuery.data === undefined && !activeSessionsQuery.isFetching)
+        void activeSessionsQuery.refetch()
       applyGlobalEvent({
         event,
         project: globalStore.project,
@@ -393,7 +549,14 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
         },
         setGlobalProject: setProjects,
       })
-      if (event.type === "server.connected" || event.type === "global.disposed") {
+      if (
+        eventType === "config.updated" ||
+        eventType === "catalog.updated" ||
+        eventType === "agent.updated" ||
+        eventType === "project.directories.updated"
+      )
+        bootstrap.refetch()
+      if (eventType === "server.connected" || eventType === "global.disposed") {
         if (recent) return
         for (const directory of Object.keys(children.children)) {
           if (!children.active(directory)) continue
@@ -403,9 +566,30 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
       return
     }
 
+    if (event.current?.type === "session.moved") {
+      const info = session.get(event.current.data.sessionID)
+      if (info) indexSession(info)
+    }
+    if (event.current?.type === "session.forked")
+      void session
+        .resolve(event.current.data.sessionID, { force: true })
+        .then(indexSession)
+        .catch(() => {})
+
     const existing = children.children[key]
     if (!existing) return
     children.mark(key)
+    if (
+      event.current?.type === "session.moved" ||
+      event.current?.type === "session.archived" ||
+      event.current?.type === "session.forked" ||
+      eventType === "command.updated" ||
+      eventType === "config.updated" ||
+      eventType === "agent.updated"
+    )
+      queue.push(key)
+    if (eventType === "mcp.status.changed") void queryClient.invalidateQueries(queryOptionsApi.mcp(key))
+    if (eventType === "mcp.resources.changed") void queryClient.invalidateQueries(queryOptionsApi.mcpResources(key))
     const [store, setStore] = existing
     applyDirectoryEvent({
       event,
@@ -502,14 +686,23 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
       toggle: async (directory: string, name: string) => {
         const key = directoryKey(directory)
         const sdk = sdkFor(key)
-        const status = children.child(key, { bootstrap: false })[0].mcp[name].status
+        const status = children.child(key, { bootstrap: false })[0].mcp[name]?.status
+        if (!status) return
         await toggleMcp({
           status,
           connect: async () => {
-            await sdk.mcp.connect({ name })
+            if ((await serverSDK.protocol) === "v1") {
+              await sdk.mcp.connect({ name })
+              return
+            }
+            await serverSDK.api.mcp.connect({ server: name, location: { directory: key } })
           },
           disconnect: async () => {
-            await sdk.mcp.disconnect({ name })
+            if ((await serverSDK.protocol) === "v1") {
+              await sdk.mcp.disconnect({ name })
+              return
+            }
+            await serverSDK.api.mcp.disconnect({ server: name, location: { directory: key } })
           },
           authenticate: async () => {
             await sdk.mcp.auth.authenticate({ name })
diff --git a/packages/app/src/context/terminal.tsx b/packages/app/src/context/terminal.tsx
index d2d616248d33..44dde9241db6 100644
--- a/packages/app/src/context/terminal.tsx
+++ b/packages/app/src/context/terminal.tsx
@@ -149,6 +149,7 @@ function createWorkspaceTerminalSession(
   scope: ServerScopeValue,
   legacySessionID?: string,
 ) {
+  const location = { directory: sdk.directory }
   const legacy = scope === ServerScope.local ? getLegacyTerminalStorageKeys(dir, legacySessionID) : []
 
   const [store, setStore, _, ready] = persisted(
@@ -240,15 +241,16 @@ function createWorkspaceTerminalSession(
   })
   onCleanup(unsub)
 
-  const update = (client: DirectorySDK["client"], pty: Partial<LocalPTY> & { id: string }) => {
+  const update = (pty: Partial<LocalPTY> & { id: string }) => {
     const index = store.all.findIndex((x) => x.id === pty.id)
     const previous = index >= 0 ? store.all[index] : undefined
     if (index >= 0) {
       setStore("all", index, (item) => ({ ...item, ...pty }))
     }
-    client.pty
+    sdk.api.pty
       .update({
         ptyID: pty.id,
+        location,
         title: pty.title,
         size: pty.cols && pty.rows ? { rows: pty.rows, cols: pty.cols } : undefined,
       })
@@ -261,12 +263,13 @@ function createWorkspaceTerminalSession(
       })
   }
 
-  const clone = async (client: DirectorySDK["client"], id: string) => {
+  const clone = async (id: string) => {
     const index = store.all.findIndex((x) => x.id === id)
     const pty = store.all[index]
     if (!pty) return
-    const next = await client.pty
+    const next = await sdk.api.pty
       .create({
+        location,
         title: pty.title,
       })
       .catch((error: unknown) => {
@@ -308,17 +311,17 @@ function createWorkspaceTerminalSession(
       const nextNumber = pickNextTerminalNumber()
       const focusRequest = options?.focus ? requestFocus(undefined, true) : undefined
 
-      sdk.client.pty
-        .create({ title: defaultTitle(nextNumber) })
-        .then((pty: { data?: { id?: string; title?: string } }) => {
-          const id = pty.data?.id
+      sdk.api.pty
+        .create({ location, title: defaultTitle(nextNumber) })
+        .then((pty) => {
+          const id = pty.data.id
           if (!id) {
             if (focusRequest !== undefined) cancelFocus(focusRequest)
             return
           }
           const newTerminal = {
             id,
-            title: pty.data?.title ?? defaultTitle(nextNumber),
+            title: pty.data.title ?? defaultTitle(nextNumber),
             titleNumber: nextNumber,
           }
           batch(() => {
@@ -335,7 +338,7 @@ function createWorkspaceTerminalSession(
         })
     },
     update(pty: Partial<LocalPTY> & { id: string }) {
-      update(sdk.client, pty)
+      update(pty)
     },
     trim(id: string) {
       const index = store.all.findIndex((x) => x.id === id)
@@ -350,10 +353,9 @@ function createWorkspaceTerminalSession(
       })
     },
     async clone(id: string) {
-      await clone(sdk.client, id)
+      await clone(id)
     },
     bind() {
-      const client = sdk.client
       return {
         trim(id: string) {
           const index = store.all.findIndex((x) => x.id === id)
@@ -361,10 +363,10 @@ function createWorkspaceTerminalSession(
           setStore("all", index, (pty) => trimTerminal(pty))
         },
         update(pty: Partial<LocalPTY> & { id: string }) {
-          update(client, pty)
+          update(pty)
         },
         async clone(id: string) {
-          await clone(client, id)
+          await clone(id)
         },
       }
     },
@@ -412,7 +414,7 @@ function createWorkspaceTerminalSession(
         })
       }
 
-      await sdk.client.pty.remove({ ptyID: id }).catch((error: unknown) => {
+      await sdk.api.pty.remove({ ptyID: id, location }).catch((error: unknown) => {
         console.error("Failed to close terminal", error)
       })
     },
diff --git a/packages/app/src/pages/home-session-archive.test.ts b/packages/app/src/pages/home-session-archive.test.ts
index 0ad30afcd250..2d04e808f46c 100644
--- a/packages/app/src/pages/home-session-archive.test.ts
+++ b/packages/app/src/pages/home-session-archive.test.ts
@@ -19,7 +19,7 @@ test("archiving a Home session removes its open titlebar tab", async () => {
   await archiveHomeSession({
     server: remote,
     session: { id: "ses_1", directory: "/workspace" },
-    update: async () => undefined,
+    archive: async () => undefined,
     remove: () => {
       removed = true
     },
@@ -37,7 +37,7 @@ test("reports archive failures without removing the session", async () => {
   await archiveHomeSession({
     server: remote,
     session: { id: "ses_1", directory: "/workspace" },
-    update: async () => Promise.reject(failure),
+    archive: async () => Promise.reject(failure),
     remove: () => {
       removed = true
     },
diff --git a/packages/app/src/pages/home-session-archive.ts b/packages/app/src/pages/home-session-archive.ts
index 7e6634ed7ab7..bafca66e72df 100644
--- a/packages/app/src/pages/home-session-archive.ts
+++ b/packages/app/src/pages/home-session-archive.ts
@@ -6,25 +6,15 @@ type HomeSession = {
   directory: string
 }
 
-type SessionUpdate = {
-  directory: string
-  sessionID: string
-  time: { archived: number }
-}
-
 export async function archiveHomeSession(input: {
   server: ServerConnection.Key
   session: HomeSession
-  update: (value: SessionUpdate) => Promise<unknown>
+  archive: (sessionID: string) => Promise<unknown>
   remove: () => void
   onError?: (error: unknown) => void
 }) {
   await input
-    .update({
-      directory: input.session.directory,
-      sessionID: input.session.id,
-      time: { archived: Date.now() },
-    })
+    .archive(input.session.id)
     .then(() => {
       input.remove()
       notifySessionTabsRemoved({
diff --git a/packages/app/src/pages/home.tsx b/packages/app/src/pages/home.tsx
index 03924ec973d6..da7cad7e1952 100644
--- a/packages/app/src/pages/home.tsx
+++ b/packages/app/src/pages/home.tsx
@@ -606,7 +606,7 @@ export function NewHome() {
     await archiveHomeSession({
       server: ServerConnection.key(conn),
       session,
-      update: (value) => ctx.sdk.client.session.update(value),
+      archive: (sessionID) => ctx.sdk.api.session.archive({ sessionID, directory: session.directory }),
       remove: () =>
         setStore(
           produce((draft) => {
diff --git a/packages/app/src/pages/layout.tsx b/packages/app/src/pages/layout.tsx
index 812a479b200f..59474423184a 100644
--- a/packages/app/src/pages/layout.tsx
+++ b/packages/app/src/pages/layout.tsx
@@ -36,6 +36,7 @@ import { useProviders } from "@/hooks/use-providers"
 import { toaster } from "@opencode-ai/ui/toast"
 import { setV2Toast, showToast, ToastRegion } from "@/utils/toast"
 import { useServerSDK } from "@/context/server-sdk"
+import { normalizeProjectInfo } from "@/context/global-sync/utils"
 import { clearWorkspaceTerminals } from "@/context/terminal"
 import { pickSessionCacheEvictions } from "@/context/global-sync/session-cache"
 import { useNotification } from "@/context/notification"
@@ -48,6 +49,7 @@ import { setNavigate } from "@/utils/notification-click"
 import { Worktree as WorktreeState } from "@/utils/worktree"
 import { setSessionHandoff } from "@/pages/session/handoff"
 import { SessionRouteKey, SessionStateKey } from "@/utils/server-scope"
+import { listAllSessions } from "@/utils/session"
 
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { useTheme, type ColorScheme } from "@opencode-ai/ui/theme/context"
@@ -875,11 +877,7 @@ export default function LegacyLayout(props: ParentProps) {
     const index = sessions.findIndex((s) => s.id === session.id)
     const nextSession = sessions[index + 1] ?? sessions[index - 1]
 
-    await serverSDK().client.session.update({
-      directory: session.directory,
-      sessionID: session.id,
-      time: { archived: Date.now() },
-    })
+    await serverSDK().api.session.archive({ sessionID: session.id, directory: session.directory })
     setStore(
       produce((draft) => {
         const match = Binary.search(draft.session, session.id, (s) => s.id)
@@ -1185,9 +1183,12 @@ export default function LegacyLayout(props: ParentProps) {
     }
     const refreshDirs = async (target?: string) => {
       if (!target || target === root || canOpen(target)) return canOpen(target)
-      const listed = await serverSDK()
-        .client.worktree.list({ directory: root })
-        .then((x) => x.data ?? [])
+      const listed = await Promise.resolve(
+        project?.id ?? serverSDK().api.project.current({ location: { directory: root } }),
+      )
+        .then((value) => (typeof value === "string" ? value : value.id))
+        .then((projectID) => serverSDK().api.project.directories({ projectID, location: { directory: root } }))
+        .then((items) => items.map((item) => item.directory).filter((item) => pathKey(item) !== pathKey(root)))
         .catch(() => [] as string[])
       dirs = effectiveWorkspaceOrder(root, [root, ...listed], store.workspaceOrder[root])
       return canOpen(target)
@@ -1231,10 +1232,11 @@ export default function LegacyLayout(props: ParentProps) {
       await Promise.all(
         dirs.map(async (item) => ({
           path: { directory: item },
-          session: await serverSDK()
-            .client.session.list({ directory: item })
-            .then((x) => x.data ?? [])
-            .catch(() => []),
+          session: await listAllSessions(serverSDK().api.session, {
+            directory: item,
+            parentID: null,
+            order: "desc",
+          }).catch(() => []),
         })),
       ),
       Date.now(),
@@ -1294,7 +1296,10 @@ export default function LegacyLayout(props: ParentProps) {
     const name = next === getFilename(project.worktree) ? "" : next
 
     if (project.id && project.id !== "global") {
-      await serverSDK().client.project.update({ projectID: project.id, directory: project.worktree, name })
+      const result = await serverSDK().api.project.update({ projectID: project.id, name })
+      serverSync().set("project", (items) =>
+        items.map((item) => (item.id === result.id ? normalizeProjectInfo(result) : item)),
+      )
       return
     }
 
@@ -1445,10 +1450,7 @@ export default function LegacyLayout(props: ParentProps) {
     })
     const dismiss = () => toaster.dismiss(progress)
 
-    const sessions: Session[] = await serverSDK()
-      .client.session.list({ directory })
-      .then((x) => x.data ?? [])
-      .catch(() => [])
+    const sessions = await listAllSessions(serverSDK().api.session, { directory, order: "desc" }).catch(() => [])
 
     clearWorkspaceTerminals(
       directory,
@@ -1477,17 +1479,12 @@ export default function LegacyLayout(props: ParentProps) {
       return
     }
 
-    const archivedAt = Date.now()
     await Promise.all(
       sessions
         .filter((session) => session.time.archived === undefined)
         .map((session) =>
           serverSDK()
-            .client.session.update({
-              sessionID: session.id,
-              directory: session.directory,
-              time: { archived: archivedAt },
-            })
+            .api.session.archive({ sessionID: session.id, directory: session.directory })
             .catch(() => undefined),
         ),
     )
@@ -1524,9 +1521,9 @@ export default function LegacyLayout(props: ParentProps) {
 
     onMount(() => {
       serverSDK()
-        .client.vcs.status({ directory: props.directory })
-        .then((x) => {
-          const files = x.data ?? []
+        .api.vcs.status({ location: { directory: props.directory } })
+        .then((result) => {
+          const files = result.data
           const dirty = files.length > 0
           setData({ status: "ready", dirty })
         })
@@ -1582,19 +1579,19 @@ export default function LegacyLayout(props: ParentProps) {
     })
 
     const refresh = async () => {
-      const sessions = await serverSDK()
-        .client.session.list({ directory: props.directory })
-        .then((x) => x.data ?? [])
-        .catch(() => [])
+      const sessions = await listAllSessions(serverSDK().api.session, {
+        directory: props.directory,
+        order: "desc",
+      }).catch(() => [])
       const active = sessions.filter((session) => session.time.archived === undefined)
       setState({ sessions: active })
     }
 
     onMount(() => {
       serverSDK()
-        .client.vcs.status({ directory: props.directory })
-        .then((x) => {
-          const files = x.data ?? []
+        .api.vcs.status({ location: { directory: props.directory } })
+        .then((result) => {
+          const files = result.data
           const dirty = files.length > 0
           setState({ status: "ready", dirty })
           void refresh()
diff --git a/packages/app/src/pages/session.tsx b/packages/app/src/pages/session.tsx
index 3ce28416760f..067a79694561 100644
--- a/packages/app/src/pages/session.tsx
+++ b/packages/app/src/pages/session.tsx
@@ -532,7 +532,6 @@ export default function Page() {
 
   const info = createMemo(() => (params.id ? sync().session.get(params.id) : undefined))
   const isChildSession = createMemo(() => !!info()?.parentID)
-  const diffs = createMemo(() => (params.id ? list(sync().data.session_diff[params.id]) : []))
   const canReview = createMemo(() => !!sync().project)
   const reviewTab = createMemo(() => isDesktop())
   const tabState = createSessionTabs({
@@ -690,8 +689,8 @@ export default function Page() {
       queryFn: mode
         ? () =>
             sdk()
-              .client.vcs.diff({ mode })
-              .then((result) => list(result.data))
+              .api.vcs.diff({ location: { directory: sdk().directory }, mode: mode === "git" ? "working" : mode })
+              .then((result) => result.data)
               .catch((error) => {
                 console.debug("[session-review] failed to load vcs diff", { mode, error })
                 return []
@@ -738,8 +737,12 @@ export default function Page() {
           retry: 2,
           queryFn: () =>
             sdk()
-              .client.vcs.diff({ mode, directory: scope, context })
-              .then((result) => result.data ?? []),
+              .api.vcs.diff({
+                location: { directory: scope },
+                mode: mode === "git" ? "working" : mode,
+                context,
+              })
+              .then((result) => result.data),
         })
         .then((diffs) => diffs.find((diff) => diff.file === file))
 
@@ -946,10 +949,11 @@ export default function Page() {
   )
 
   const stopVcs = sdk().event.listen((evt) => {
-    if (evt.details.type !== "file.watcher.updated") return
+    const details = evt.details as { type: string; properties?: unknown }
+    if (details.type !== "file.watcher.updated" && details.type !== "filesystem.changed") return
     const props =
-      typeof evt.details.properties === "object" && evt.details.properties
-        ? (evt.details.properties as Record<string, unknown>)
+      typeof details.properties === "object" && details.properties
+        ? (details.properties as Record<string, unknown>)
         : undefined
     const file = typeof props?.file === "string" ? props.file : undefined
     if (!file || file.startsWith(".git/")) return
@@ -1464,44 +1468,6 @@ export default function Page() {
     requestAnimationFrame(() => attempt(0))
   })
 
-  createEffect(() => {
-    const id = params.id
-    if (!id) return
-
-    if (!wantsReview()) return
-    if (sync().data.session_diff[id] !== undefined) return
-    if (sync().status === "loading") return
-
-    void sync().session.diff(id)
-  })
-
-  createEffect(
-    on(
-      () => [sessionKey(), wantsReview()] as const,
-      ([key, wants]) => {
-        if (diffFrame !== undefined) cancelAnimationFrame(diffFrame)
-        if (diffTimer !== undefined) window.clearTimeout(diffTimer)
-        diffFrame = undefined
-        diffTimer = undefined
-        if (!wants) return
-
-        const id = params.id
-        if (!id) return
-        if (!untrack(() => sync().data.session_diff[id] !== undefined)) return
-
-        diffFrame = requestAnimationFrame(() => {
-          diffFrame = undefined
-          diffTimer = window.setTimeout(() => {
-            diffTimer = undefined
-            if (sessionKey() !== key) return
-            void sync().session.diff(id, { force: true })
-          }, 0)
-        })
-      },
-      { defer: true },
-    ),
-  )
-
   let treeDir: string | undefined
   createEffect(() => {
     const dir = sdk().directory
@@ -1757,7 +1723,7 @@ export default function Page() {
       setFollowup("failed", input.sessionID, undefined)
 
       const ok = await sendFollowupDraft({
-        client: sdk().client,
+        api: sdk().api.session,
         sync: sync(),
         serverSync: serverSync(),
         draft: item,
@@ -1853,13 +1819,13 @@ export default function Page() {
   const halt = (sessionID: string) =>
     busy(sessionID)
       ? sdk()
-          .client.session.abort({ sessionID })
+          .api.session.interrupt({ sessionID })
           .catch(() => {})
       : Promise.resolve()
 
   const revertMutation = useMutation(() => ({
     mutationFn: async (input: { sessionID: string; messageID: string }) => {
-      const client = sdk().client
+      const session = sdk().api.session
       const target = sync()
       const last = target.session.get(input.sessionID)?.revert
       const value = draft(input.messageID)
@@ -1869,10 +1835,8 @@ export default function Page() {
           roll(input.sessionID, { messageID: input.messageID }, target)
           prompt.set(value)
         },
-        request: () => halt(input.sessionID).then(() => client.session.revert(input)),
-        complete: (result) => {
-          if (result.data) merge(result.data, target)
-        },
+        request: () => halt(input.sessionID).then(() => session.revert.stage(input)),
+        complete: () => undefined,
         rollback: () => roll(input.sessionID, last, target),
         fail,
       })
@@ -1884,7 +1848,7 @@ export default function Page() {
       const sessionID = params.id
       if (!sessionID) return
 
-      const client = sdk().client
+      const session = sdk().api.session
       const target = sync()
       const next = userMessages().find((item) => item.id > id)
       const last = target.session.get(sessionID)?.revert
@@ -1901,11 +1865,9 @@ export default function Page() {
         },
         request: () =>
           !next
-            ? halt(sessionID).then(() => client.session.unrevert({ sessionID }))
-            : halt(sessionID).then(() => client.session.revert({ sessionID, messageID: next.id })),
-        complete: (result) => {
-          if (result.data) merge(result.data, target)
-        },
+            ? halt(sessionID).then(() => session.revert.clear({ sessionID }))
+            : halt(sessionID).then(() => session.revert.stage({ sessionID, messageID: next.id }).then(() => undefined)),
+        complete: () => undefined,
         rollback: () => roll(sessionID, last, target),
         fail,
       })
diff --git a/packages/app/src/pages/session/composer/session-composer-controls.ts b/packages/app/src/pages/session/composer/session-composer-controls.ts
index f52b7f4b4223..4ae7827e210a 100644
--- a/packages/app/src/pages/session/composer/session-composer-controls.ts
+++ b/packages/app/src/pages/session/composer/session-composer-controls.ts
@@ -45,7 +45,8 @@ export function createPromptInputController(input: {
     model: {
       selection: input.model ?? local.model,
       paid: providers.paid().length > 0,
-      loading: agentsQuery.isLoading || providersQuery.isLoading || globalProvidersQuery.isLoading,
+      loading:
+        (local.agent.visible() && agentsQuery.isLoading) || providersQuery.isLoading || globalProvidersQuery.isLoading,
     },
     session: {
       id: input.sessionID(),
diff --git a/packages/app/src/pages/session/composer/session-composer-state.ts b/packages/app/src/pages/session/composer/session-composer-state.ts
index 45f5e4cb26ff..f54e0c9e4f5d 100644
--- a/packages/app/src/pages/session/composer/session-composer-state.ts
+++ b/packages/app/src/pages/session/composer/session-composer-state.ts
@@ -82,7 +82,7 @@ export function createSessionComposerController(options?: { closeMs?: number | (
 
     setStore("responding", perm.id)
     sdk()
-      .client.permission.respond({ sessionID: perm.sessionID, permissionID: perm.id, response })
+      .api.permission.reply({ sessionID: perm.sessionID, requestID: perm.id, reply: response })
       .catch((err: unknown) => {
         const description = err instanceof Error ? err.message : String(err)
         showToast({ title: language.t("common.requestFailed"), description })
diff --git a/packages/app/src/pages/session/composer/session-question-dock.tsx b/packages/app/src/pages/session/composer/session-question-dock.tsx
index 445a9f47a082..941424e247cf 100644
--- a/packages/app/src/pages/session/composer/session-question-dock.tsx
+++ b/packages/app/src/pages/session/composer/session-question-dock.tsx
@@ -223,7 +223,8 @@ export const SessionQuestionDock: Component<{ request: QuestionRequest; onSubmit
   }
 
   const replyMutation = useMutation(() => ({
-    mutationFn: (answers: QuestionAnswer[]) => sdk().client.question.reply({ requestID: props.request.id, answers }),
+    mutationFn: (answers: QuestionAnswer[]) =>
+      sdk().api.question.reply({ sessionID: props.request.sessionID, requestID: props.request.id, answers }),
     onMutate: () => {
       props.onSubmit()
     },
@@ -235,7 +236,7 @@ export const SessionQuestionDock: Component<{ request: QuestionRequest; onSubmit
   }))
 
   const rejectMutation = useMutation(() => ({
-    mutationFn: () => sdk().client.question.reject({ requestID: props.request.id }),
+    mutationFn: () => sdk().api.question.reject({ sessionID: props.request.sessionID, requestID: props.request.id }),
     onMutate: () => {
       props.onSubmit()
     },
diff --git a/packages/app/src/pages/session/file-tabs.tsx b/packages/app/src/pages/session/file-tabs.tsx
index 688714fcf15c..45dd44bc9927 100644
--- a/packages/app/src/pages/session/file-tabs.tsx
+++ b/packages/app/src/pages/session/file-tabs.tsx
@@ -235,7 +235,7 @@ export function SessionFileView(props: SessionFileViewProps) {
     const source = props.diff
     if (!source) return
     const loaded = loadedDiff()
-    return normalize(loaded?.source === source && loaded.version === props.diffVersion ? loaded.value : source)
+    return normalize(loaded && loaded.source === source && loaded.version === props.diffVersion ? loaded.value : source)
   })
 
   return (
diff --git a/packages/app/src/pages/session/review-tab.tsx b/packages/app/src/pages/session/review-tab.tsx
index 3854bf0276ea..1b65af7121ac 100644
--- a/packages/app/src/pages/session/review-tab.tsx
+++ b/packages/app/src/pages/session/review-tab.tsx
@@ -1,6 +1,7 @@
 import { createEffect, onCleanup, type JSX } from "solid-js"
 import { makeEventListener } from "@solid-primitives/event-listener"
 import type { SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import { SessionReview } from "@opencode-ai/session-ui/session-review"
 import type {
   SessionReviewCommentActions,
@@ -14,7 +15,7 @@ import type { LineComment } from "@/context/comments"
 
 export type DiffStyle = "unified" | "split"
 
-type ReviewDiff = SnapshotFileDiff | VcsFileDiff
+type ReviewDiff = FileDiffInfo | SnapshotFileDiff | VcsFileDiff
 
 export interface SessionReviewTabProps {
   title?: JSX.Element
diff --git a/packages/app/src/pages/session/session-side-panel.tsx b/packages/app/src/pages/session/session-side-panel.tsx
index 571428e29f0b..8615d537cd53 100644
--- a/packages/app/src/pages/session/session-side-panel.tsx
+++ b/packages/app/src/pages/session/session-side-panel.tsx
@@ -24,6 +24,7 @@ import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
 import { KeybindV2 } from "@opencode-ai/ui/v2/keybind-v2"
 import { TooltipV2 } from "@opencode-ai/ui/v2/tooltip-v2"
 import type { SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import { ConstrainDragYAxis, getDraggableId } from "@/utils/solid-dnd"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 
@@ -56,15 +57,16 @@ import { setSessionHandoff } from "@/pages/session/handoff"
 import { useSessionLayout } from "@/pages/session/session-layout"
 import { SessionFileBrowserTab, type SessionFileBrowserState } from "@/pages/session/v2/session-file-browser-tab"
 
-type RenderDiff = (SnapshotFileDiff & { file: string }) | VcsFileDiff
+type ReviewDiff = FileDiffInfo | SnapshotFileDiff | VcsFileDiff
+type RenderDiff = FileDiffInfo | (SnapshotFileDiff & { file: string }) | VcsFileDiff
 
-function renderDiff(value: SnapshotFileDiff | VcsFileDiff): value is RenderDiff {
+function renderDiff(value: ReviewDiff): value is RenderDiff {
   return typeof value.file === "string"
 }
 
 export function SessionSidePanel(props: {
   canReview: () => boolean
-  diffs: () => (SnapshotFileDiff | VcsFileDiff)[]
+  diffs: () => ReviewDiff[]
   diffsReady: () => boolean
   empty: () => string
   hasReview: () => boolean
diff --git a/packages/app/src/pages/session/timeline/message-timeline.tsx b/packages/app/src/pages/session/timeline/message-timeline.tsx
index 2959e9f8a9bd..ddc6a4fadeab 100644
--- a/packages/app/src/pages/session/timeline/message-timeline.tsx
+++ b/packages/app/src/pages/session/timeline/message-timeline.tsx
@@ -283,6 +283,14 @@ export function MessageTimeline(props: {
     return sync().data.session_status[id] ?? idle
   })
   const sessionMessages = createMemo(() => (sessionID() ? (sync().data.message[sessionID()!] ?? []) : []))
+  const projectedMessages = createMemo(() => {
+    const id = sessionID()
+    if (!id) return []
+    const visible = new Set(props.userMessages.map((message) => message.id))
+    const boundary = sessionMessages().find((message) => message.role === "user" && !visible.has(message.id))?.id
+    const messages = sync().data.session_message[id] ?? []
+    return boundary ? messages.filter((message) => message.id < boundary) : messages
+  })
   const info = createMemo(() => {
     const id = sessionID()
     if (!id) return
@@ -324,7 +332,7 @@ export function MessageTimeline(props: {
   const showHeader = createMemo(() => !!(titleValue() || parentID()))
   const projection = createTimelineProjection({
     messages: sessionMessages,
-    userMessages: () => props.userMessages,
+    sessionMessages: projectedMessages,
     parts: getMsgParts,
     status: sessionStatus,
     showReasoningSummaries: settings.general.showReasoningSummaries,
@@ -664,8 +672,7 @@ export function MessageTimeline(props: {
   }))
 
   const titleMutation = useMutation(() => ({
-    mutationFn: (input: { id: string; title: string }) =>
-      sdk().client.session.update({ sessionID: input.id, title: input.title }),
+    mutationFn: (input: { id: string; title: string }) => sdk().api.session.rename({ sessionID: input.id, title: input.title }),
     onSuccess: (_, input) => {
       sync().set(
         produce((draft) => {
@@ -809,7 +816,7 @@ export function MessageTimeline(props: {
     const nextSession = index === -1 ? undefined : (sessions[index + 1] ?? sessions[index - 1])
 
     await sdk()
-      .client.session.update({ sessionID, time: { archived: Date.now() } })
+      .api.session.archive({ sessionID })
       .then(() => {
         sync().set(
           produce((draft) => {
@@ -838,8 +845,8 @@ export function MessageTimeline(props: {
     const nextSession = index === -1 ? undefined : (sessions[index + 1] ?? sessions[index - 1])
 
     const result = await sdk()
-      .client.session.delete({ sessionID })
-      .then((x) => x.data)
+      .api.session.remove({ sessionID })
+      .then(() => true)
       .catch((err) => {
         showToast({
           title: language.t("session.delete.failed.title"),
diff --git a/packages/app/src/pages/session/timeline/projection.ts b/packages/app/src/pages/session/timeline/projection.ts
index ea8ea4f13228..b430dba4daee 100644
--- a/packages/app/src/pages/session/timeline/projection.ts
+++ b/packages/app/src/pages/session/timeline/projection.ts
@@ -1,16 +1,14 @@
-import { Binary } from "@opencode-ai/core/util/binary"
+import type { SessionMessageInfo } from "@opencode-ai/client/promise"
 import type { AssistantMessage, Message, Part, SessionStatus, UserMessage } from "@opencode-ai/sdk/v2"
-import { createMemo, mapArray, type Accessor } from "solid-js"
+import { createMemo, type Accessor } from "solid-js"
 import { reuseTimelineRows } from "./row-reconciliation"
 import { Timeline, TimelineRow } from "./rows"
 
 export { reuseTimelineRows } from "./row-reconciliation"
 
-const emptyAssistantMessages: AssistantMessage[] = []
-
 export function createTimelineProjection(input: {
   messages: Accessor<Message[]>
-  userMessages: Accessor<UserMessage[]>
+  sessionMessages: Accessor<SessionMessageInfo[]>
   parts: (messageID: string) => Part[]
   status: Accessor<SessionStatus>
   showReasoningSummaries: Accessor<boolean>
@@ -30,47 +28,19 @@ export function createTimelineProjection(input: {
     })
     return result
   })
-  const activeMessageID = createMemo(() => {
-    const parentID = input
-      .messages()
-      .findLast(
-        (message): message is AssistantMessage =>
-          message.role === "assistant" && typeof message.time.completed !== "number",
-      )?.parentID
-    if (parentID) {
-      const messages = input.messages()
-      const result = Binary.search(messages, parentID, (message) => message.id)
-      const message = result.found ? messages[result.index] : messages.find((item) => item.id === parentID)
-      if (message?.role === "user") return message.id
-    }
-
-    if (input.status().type === "idle") return
-    return input.messages().findLast((message) => message.role === "user")?.id
-  })
-  const messageRowMemos = createMemo(
-    mapArray(input.userMessages, (userMessage, indexAccessor) =>
-      createMemo((previous: TimelineRow.TimelineRow[] | undefined) =>
-        reuseTimelineRows(
-          previous,
-          Timeline.constructMessageRows(
-            userMessage,
-            input.parts,
-            assistantMessagesByParent().get(userMessage.id) ?? emptyAssistantMessages,
-            indexAccessor(),
-            input.showReasoningSummaries(),
-            input.status().type,
-            activeMessageID() === userMessage.id,
-            input.inlineComments(),
-          ),
-        ),
-      ),
+  const projection = createMemo(() =>
+    Timeline.constructSessionMessageRows(
+      input.sessionMessages(),
+      (messageID) => messageByID().get(messageID) as UserMessage | AssistantMessage | undefined,
+      input.parts,
+      input.showReasoningSummaries(),
+      input.status().type,
+      input.inlineComments(),
     ),
   )
+  const activeMessageID = createMemo(() => projection().activeMessageID)
   const rows = createMemo((previous: TimelineRow.TimelineRow[] | undefined) =>
-    reuseTimelineRows(
-      previous,
-      messageRowMemos().flatMap((memo) => memo()),
-    ),
+    reuseTimelineRows(previous, projection().rows),
   )
   const rowByKey = createMemo(() => new Map(rows().map((row) => [TimelineRow.key(row), row] as const)))
   const messageRowIndex = createMemo(() => {
diff --git a/packages/app/src/pages/session/timeline/rows-current.test.ts b/packages/app/src/pages/session/timeline/rows-current.test.ts
new file mode 100644
index 000000000000..941ac59b23dd
--- /dev/null
+++ b/packages/app/src/pages/session/timeline/rows-current.test.ts
@@ -0,0 +1,92 @@
+import { describe, expect, mock, test } from "bun:test"
+import type { SessionMessageInfo } from "@opencode-ai/client/promise"
+import { normalizeSessionMessages } from "@/utils/session-message"
+
+mock.module("@opencode-ai/session-ui/message-part", () => ({
+  renderable: () => true,
+  groupParts: (refs: Array<{ messageID: string; part: { id: string } }>) =>
+    refs.map((ref) => ({
+      type: "part" as const,
+      key: ref.part.id,
+      ref: { messageID: ref.messageID, partID: ref.part.id },
+    })),
+}))
+
+const { Timeline, TimelineRow } = await import("./rows")
+
+describe("current session timeline rows", () => {
+  test("derives turns and tagged rows from chronological current messages", () => {
+    const source = [
+      { id: "msg_1", type: "user", text: "first", time: { created: 1 } },
+      {
+        id: "msg_2",
+        type: "assistant",
+        agent: "build",
+        model: { id: "model", providerID: "provider" },
+        content: [{ type: "text", text: "answer" }],
+        time: { created: 2, completed: 3 },
+      },
+      { id: "msg_3", type: "user", text: "second", time: { created: 4 } },
+      {
+        id: "msg_4",
+        type: "assistant",
+        agent: "build",
+        model: { id: "model", providerID: "provider" },
+        content: [{ type: "reasoning", text: "working" }],
+        time: { created: 5 },
+      },
+    ] satisfies SessionMessageInfo[]
+    const normalized = normalizeSessionMessages("ses_1", source)
+    const messages = new Map(normalized.messages.map((message) => [message.id, message]))
+
+    const result = Timeline.constructSessionMessageRows(
+      source,
+      (messageID) => messages.get(messageID),
+      (messageID) => normalized.parts.get(messageID) ?? [],
+      true,
+      "busy",
+      true,
+    )
+
+    expect(result.activeMessageID).toBe("msg_3")
+    expect(result.rows.map(TimelineRow.key)).toEqual([
+      "user-message:msg_1",
+      "assistant-part:msg_1:msg_2:text:0",
+      "turn-gap:msg_3",
+      "user-message:msg_3",
+      "assistant-part:msg_3:msg_4:reasoning:0",
+    ])
+  })
+
+  test("renders a current shell message as a standalone turn", () => {
+    const source = [
+      {
+        id: "msg_shell",
+        type: "shell",
+        shellID: "shell_1",
+        command: "pwd",
+        status: "exited",
+        exit: 0,
+        output: { output: "/repo", cursor: 5, size: 5, truncated: false },
+        time: { created: 1, completed: 2 },
+      },
+    ] satisfies SessionMessageInfo[]
+    const normalized = normalizeSessionMessages("ses_1", source)
+    const messages = new Map(normalized.messages.map((message) => [message.id, message]))
+
+    const result = Timeline.constructSessionMessageRows(
+      source,
+      (messageID) => messages.get(messageID),
+      (messageID) => normalized.parts.get(messageID) ?? [],
+      true,
+      "idle",
+      true,
+    )
+
+    expect(result.activeMessageID).toBe("msg_shell")
+    expect(result.rows.map(TimelineRow.key)).toEqual([
+      "user-message:msg_shell",
+      "assistant-part:msg_shell:msg_shell:tool",
+    ])
+  })
+})
diff --git a/packages/app/src/pages/session/timeline/rows.ts b/packages/app/src/pages/session/timeline/rows.ts
index a9c9a2d2881a..a8e97c012ac9 100644
--- a/packages/app/src/pages/session/timeline/rows.ts
+++ b/packages/app/src/pages/session/timeline/rows.ts
@@ -1,4 +1,5 @@
 import { parseCommentNote, readCommentMetadata } from "@/utils/comment-note"
+import type { SessionMessageInfo } from "@opencode-ai/client/promise"
 import { AssistantMessage, Part, SessionStatus, UserMessage } from "@opencode-ai/sdk/v2"
 import { groupParts, renderable, type PartGroup } from "@opencode-ai/session-ui/message-part"
 import { TimelineRow, type SummaryDiff } from "./timeline-row"
@@ -31,6 +32,47 @@ export type TimelineRowMap = {
 }
 
 export namespace Timeline {
+  export function constructSessionMessageRows(
+    messages: SessionMessageInfo[],
+    getMessage: (messageID: string) => UserMessage | AssistantMessage | undefined,
+    getMessageParts: (messageID: string) => Part[],
+    showReasoning: boolean,
+    status: SessionStatus["type"],
+    inlineComments: boolean,
+  ) {
+    const turns = messages.reduce<{ user: UserMessage; assistants: AssistantMessage[] }[]>((result, message) => {
+      const projected = getMessage(message.id)
+      if (message.type === "shell" && projected?.role === "user") {
+        const assistant = getMessage(`${message.id}:assistant`)
+        result.push({ user: projected, assistants: assistant?.role === "assistant" ? [assistant] : [] })
+        return result
+      }
+      if (projected?.role === "user") {
+        result.push({ user: projected, assistants: [] })
+        return result
+      }
+      if (projected?.role !== "assistant") return result
+      result.at(-1)?.assistants.push(projected)
+      return result
+    }, [])
+    const activeMessageID = turns.at(-1)?.user.id
+    return {
+      activeMessageID,
+      rows: turns.flatMap((turn, index) =>
+        constructMessageRows(
+          turn.user,
+          getMessageParts,
+          turn.assistants,
+          index,
+          showReasoning,
+          status,
+          turn.user.id === activeMessageID,
+          inlineComments,
+        ),
+      ),
+    }
+  }
+
   export function constructMessageRows(
     userMessage: UserMessage,
     getMessageParts: (messageID: string) => Part[],
diff --git a/packages/app/src/pages/session/use-session-commands.tsx b/packages/app/src/pages/session/use-session-commands.tsx
index 275e6ec4bc22..12dd96a5e66b 100644
--- a/packages/app/src/pages/session/use-session-commands.tsx
+++ b/packages/app/src/pages/session/use-session-commands.tsx
@@ -5,7 +5,6 @@ import { previewSelectedLines } from "@opencode-ai/session-ui/pierre/selection-b
 import { useFile, selectionFromLines, type FileSelection, type SelectedLineRange } from "@/context/file"
 import { useLanguage } from "@/context/language"
 import { useLayout } from "@/context/layout"
-import { useLocal } from "@/context/local"
 import { usePermission } from "@/context/permission"
 import { usePrompt } from "@/context/prompt"
 import { useSDK } from "@/context/sdk"
@@ -19,6 +18,7 @@ import { extractPromptFromParts } from "@/utils/prompt"
 import { UserMessage } from "@opencode-ai/sdk/v2"
 import { useSessionLayout } from "@/pages/session/session-layout"
 import { createSessionOwnership } from "./session-ownership"
+import { useLocal } from "@/context/local"
 
 export type SessionCommandContext = {
   navigateMessageByOffset: (offset: number) => void
@@ -40,7 +40,6 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
   const dialog = useDialog()
   const file = useFile()
   const language = useLanguage()
-  const local = useLocal()
   const permission = usePermission()
   const prompt = usePrompt()
   const sdk = useSDK()
@@ -48,6 +47,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
   const sync = useSync()
   const terminal = useTerminal()
   const layout = useLayout()
+  const local = useLocal()
   const navigate = useNavigate()
   const { params, sessionKey, tabs, view } = useSessionLayout()
   const sessionOwnership = createSessionOwnership(sessionKey)
@@ -306,7 +306,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
     const sessionID = params.id
     if (!sessionID) return
     const owner = sessionOwnership.capture()
-    const client = sdk().client
+    const session = sdk().api.session
     const directory = sdk().directory
     const promptSession = prompt.capture()
     const revert = info()?.revert?.messageID
@@ -316,13 +316,13 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
     const parts = sync().data.part[message.id]
 
     if (sync().data.session_working(sessionID)) {
-      await client.session.abort({ sessionID }).catch(() => {})
+      await session.interrupt({ sessionID }).catch(() => {})
     }
 
     await runCommand({
       owner,
       prompt: promptSession,
-      request: () => client.session.revert({ sessionID, messageID: message.id }),
+      request: () => session.revert.stage({ sessionID, messageID: message.id }),
       updatePrompt: (promptSession) => {
         if (parts) promptSession.set(extractPromptFromParts(parts, { directory }))
       },
@@ -334,7 +334,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
     const sessionID = params.id
     if (!sessionID) return
     const owner = sessionOwnership.capture()
-    const client = sdk().client
+    const session = sdk().api.session
     const messages = userMessages()
     const promptSession = prompt.capture()
 
@@ -346,7 +346,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
       await runCommand({
         owner,
         prompt: promptSession,
-        request: () => client.session.unrevert({ sessionID }),
+        request: () => session.revert.clear({ sessionID }),
         updatePrompt: (promptSession) => promptSession.reset(),
         updateViewport: () => setActiveMessage(findLast(messages, (x) => x.id >= revertMessageID)),
       })
@@ -356,7 +356,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
     await runCommand({
       owner,
       prompt: promptSession,
-      request: () => client.session.revert({ sessionID, messageID: next.id }),
+      request: () => session.revert.stage({ sessionID, messageID: next.id }),
       updatePrompt: () => undefined,
       updateViewport: () => setActiveMessage(findLast(messages, (x) => x.id < next.id)),
     })
@@ -375,10 +375,9 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
       return
     }
 
-    await sdk().client.session.summarize({
+    await sdk().api.session.compact({
       sessionID,
-      modelID: model.id,
-      providerID: model.provider.id,
+      model: { providerID: model.provider.id, modelID: model.id },
     })
   }
 
diff --git a/packages/app/src/pages/session/v2/review-diff-kinds.ts b/packages/app/src/pages/session/v2/review-diff-kinds.ts
index 49cec334bc47..d3adb1f2fffa 100644
--- a/packages/app/src/pages/session/v2/review-diff-kinds.ts
+++ b/packages/app/src/pages/session/v2/review-diff-kinds.ts
@@ -1,14 +1,15 @@
 import type { SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import type { Kind } from "@/components/file-tree-v2"
 import { normalizeFileTreeV2Path } from "@/components/file-tree-v2-model"
 
-export type RenderDiff = (SnapshotFileDiff & { file: string }) | VcsFileDiff
+export type RenderDiff = FileDiffInfo | (SnapshotFileDiff & { file: string }) | VcsFileDiff
 
 export function normalizePath(p: string) {
   return normalizeFileTreeV2Path(p)
 }
 
-export function filterRenderableDiff(value: SnapshotFileDiff | VcsFileDiff): value is RenderDiff {
+export function filterRenderableDiff(value: FileDiffInfo | SnapshotFileDiff | VcsFileDiff): value is RenderDiff {
   return typeof value.file === "string"
 }
 
diff --git a/packages/app/src/pages/session/v2/review-panel-v2.tsx b/packages/app/src/pages/session/v2/review-panel-v2.tsx
index 4f0cf612e1e2..fcd6bbb79feb 100644
--- a/packages/app/src/pages/session/v2/review-panel-v2.tsx
+++ b/packages/app/src/pages/session/v2/review-panel-v2.tsx
@@ -1,5 +1,6 @@
 import { createMemo, createResource, createSignal, Show, type JSX } from "solid-js"
 import type { SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import {
   SESSION_REVIEW_V2_SIDEBAR_WIDTH_MAX,
   SESSION_REVIEW_V2_SIDEBAR_WIDTH_MIN,
@@ -30,7 +31,7 @@ import {
 import type { ReviewPanelV2State } from "@/pages/session/v2/review-panel-v2-state"
 import { applyFileListKeyDown, SessionFileListV2 } from "@/pages/session/v2/session-file-list-v2"
 
-type ReviewDiff = SnapshotFileDiff | VcsFileDiff
+type ReviewDiff = FileDiffInfo | SnapshotFileDiff | VcsFileDiff
 
 export type ReviewPanelV2Props = {
   title?: JSX.Element
diff --git a/packages/app/src/utils/diffs.test.ts b/packages/app/src/utils/diffs.test.ts
index 5fbca469b713..a3d25f427959 100644
--- a/packages/app/src/utils/diffs.test.ts
+++ b/packages/app/src/utils/diffs.test.ts
@@ -1,5 +1,6 @@
 import { describe, expect, test } from "bun:test"
 import type { SnapshotFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import type { Message } from "@opencode-ai/sdk/v2/client"
 import { diffs, message } from "./diffs"
 
@@ -9,7 +10,7 @@ const item = {
   additions: 1,
   deletions: 1,
   status: "modified",
-} satisfies SnapshotFileDiff
+} satisfies FileDiffInfo & SnapshotFileDiff
 
 describe("diffs", () => {
   test("keeps valid arrays", () => {
diff --git a/packages/app/src/utils/diffs.ts b/packages/app/src/utils/diffs.ts
index 0cb2504fbe92..a8eec75a9af3 100644
--- a/packages/app/src/utils/diffs.ts
+++ b/packages/app/src/utils/diffs.ts
@@ -1,7 +1,8 @@
 import type { SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import type { Message } from "@opencode-ai/sdk/v2/client"
 
-type Diff = SnapshotFileDiff | VcsFileDiff
+type Diff = FileDiffInfo | SnapshotFileDiff | VcsFileDiff
 
 function diff(value: unknown): value is Diff {
   if (!value || typeof value !== "object" || Array.isArray(value)) return false
diff --git a/packages/app/src/utils/server-compat.test.ts b/packages/app/src/utils/server-compat.test.ts
new file mode 100644
index 000000000000..eca83effa0d1
--- /dev/null
+++ b/packages/app/src/utils/server-compat.test.ts
@@ -0,0 +1,95 @@
+import { describe, expect, test } from "bun:test"
+import { createApiForServer, createSdkForServer } from "./server"
+import { createCompatibleApi } from "./server-compat"
+
+function setup(protocol: "v1" | "v2") {
+  const requests: Request[] = []
+  const fetcher = Object.assign(
+    async (input: string | URL | Request, init?: RequestInit) => {
+      const request = new Request(input, init)
+      requests.push(request)
+      if (request.method === "PATCH") {
+        return Response.json({
+          id: "ses_1",
+          slug: "ses_1",
+          projectID: "project",
+          directory: "/repo",
+          title: "Session",
+          version: "1",
+          time: { created: 1, updated: 1 },
+        })
+      }
+      if (request.method === "POST" && request.url.endsWith("/prompt_async"))
+        return new Response(undefined, { status: 204 })
+    if (request.method === "POST" && request.url.endsWith("/prompt")) {
+        return Response.json({
+          admittedSeq: 1,
+          id: "msg_1",
+          sessionID: "ses_1",
+          timeCreated: 1,
+          type: "user",
+          data: { text: "hello" },
+          delivery: "steer",
+      })
+    }
+    if (request.method === "GET") return Response.json([])
+    return new Response(undefined, { status: 204 })
+    },
+    { preconnect: globalThis.fetch.preconnect },
+  )
+  const server = { url: "http://localhost:4096" }
+  const api = createCompatibleApi({
+    protocol: Promise.resolve(protocol),
+    current: createApiForServer({ server, fetch: fetcher }),
+    legacy: (directory) => createSdkForServer({ server, fetch: fetcher, directory, throwOnError: true }),
+    directory: "/repo",
+  })
+  return { api, requests }
+}
+
+describe("createCompatibleApi", () => {
+  test("routes V1 archive through the legacy session update", async () => {
+    const { api, requests } = setup("v1")
+    await api.session.archive({ sessionID: "ses_1", directory: "/repo" })
+
+    const url = new URL(requests[0]!.url)
+    expect(url.pathname).toBe("/session/ses_1")
+    expect(requests[0]!.headers.get("x-opencode-directory")).toBe("%2Frepo")
+    expect(requests[0]!.method).toBe("PATCH")
+    expect(await requests[0]!.json()).toMatchObject({ time: { archived: expect.any(Number) } })
+  })
+
+  test("converts current prompts to the V1 prompt contract", async () => {
+    const { api, requests } = setup("v1")
+    await api.session.prompt({
+      sessionID: "ses_1",
+      id: "msg_1",
+      text: "hello",
+      agent: "build",
+      model: { providerID: "provider", modelID: "model" },
+    })
+
+    expect(new URL(requests[0]!.url).pathname).toBe("/session/ses_1/prompt_async")
+    expect(await requests[0]!.json()).toMatchObject({
+      messageID: "msg_1",
+      agent: "build",
+      model: { providerID: "provider", modelID: "model" },
+      parts: [{ type: "text", text: "hello" }],
+    })
+  })
+
+  test("keeps V2 session actions on the current API", async () => {
+    const { api, requests } = setup("v2")
+    await api.session.archive({ sessionID: "ses_1" })
+
+    expect(new URL(requests[0]!.url).pathname).toBe("/api/session/ses_1/archive")
+    expect(requests[0]!.method).toBe("POST")
+  })
+
+  test("uses the global V1 session search endpoint", async () => {
+    const { api, requests } = setup("v1")
+    await api.session.list({ parentID: null, search: "session", limit: 50 })
+
+    expect(new URL(requests[0]!.url).pathname).toBe("/experimental/session")
+  })
+})
diff --git a/packages/app/src/utils/server-compat.ts b/packages/app/src/utils/server-compat.ts
new file mode 100644
index 000000000000..95854d03b2c9
--- /dev/null
+++ b/packages/app/src/utils/server-compat.ts
@@ -0,0 +1,496 @@
+import type { ServerApi } from "./server"
+import type { ServerProtocol } from "./server-protocol"
+import type { OpencodeClient, Session } from "@opencode-ai/sdk/v2/client"
+import type {
+  Project,
+  ProjectCurrent,
+  SessionApi,
+  SessionCommandInput,
+  SessionCommandOutput,
+  SessionCompactInput,
+  SessionCompactOutput,
+  SessionInfo,
+  SessionPromptInput,
+  SessionPromptOutput,
+  SessionShellInput,
+  SessionShellOutput,
+} from "@opencode-ai/client/promise"
+
+type LegacyClient = OpencodeClient
+type LegacyFor = (directory?: string) => LegacyClient
+type CompatibleSessionApi = Omit<
+  SessionApi,
+  "prompt" | "command" | "shell" | "compact" | "rename" | "archive" | "remove"
+> & {
+  prompt: (input: SessionPromptInput & LegacyPrompt) => Promise<SessionPromptOutput>
+  command: (input: SessionCommandInput) => Promise<SessionCommandOutput>
+  shell: (input: SessionShellInput & LegacyPrompt) => Promise<SessionShellOutput>
+  compact: (input: SessionCompactInput & { model?: LegacyPrompt["model"] }) => Promise<SessionCompactOutput>
+  rename: (input: Parameters<SessionApi["rename"]>[0] & LegacyLocation) => ReturnType<SessionApi["rename"]>
+  archive: (input: Parameters<SessionApi["archive"]>[0] & LegacyLocation) => ReturnType<SessionApi["archive"]>
+  remove: (input: Parameters<SessionApi["remove"]>[0] & LegacyLocation) => ReturnType<SessionApi["remove"]>
+}
+export type CompatibleApi = Omit<ServerApi, "session"> & { readonly session: CompatibleSessionApi }
+type LegacyPrompt = {
+  agent?: string
+  model?: { providerID: string; modelID: string }
+  variant?: string
+}
+type LegacyLocation = { directory?: string }
+
+function mime(uri: string) {
+  const match = /^data:([^;,]+)/.exec(uri)
+  return match?.[1] ?? "application/octet-stream"
+}
+
+function sessionInfo(session: Session): SessionInfo {
+  return {
+    id: session.id,
+    parentID: session.parentID,
+    projectID: session.projectID,
+    agent: session.agent,
+    model: session.model && {
+      id: session.model.id,
+      providerID: session.model.providerID,
+      variant: session.model.variant,
+    },
+    cost: session.cost ?? 0,
+    tokens: session.tokens ?? { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    time: session.time,
+    title: session.title,
+    location: { directory: session.directory, workspaceID: session.workspaceID },
+    subpath: session.path,
+    revert: session.revert && {
+      messageID: session.revert.messageID,
+      partID: session.revert.partID,
+      snapshot: session.revert.snapshot,
+    },
+  }
+}
+
+export function createCompatibleApi(input: {
+  protocol: Promise<ServerProtocol>
+  current: ServerApi
+  legacy: LegacyFor
+  directory?: string
+}): CompatibleApi {
+  const directory = (location?: { directory?: string }) => location?.directory ?? input.directory
+  const legacy = (location?: { directory?: string }) => input.legacy(directory(location))
+  const isV1 = () => input.protocol.then((protocol) => protocol === "v1")
+  const located = <T>(data: T, value?: { directory?: string }) => ({
+    location: {
+      directory: directory(value) ?? "",
+      project: { id: "", directory: directory(value) ?? "" },
+    },
+    data,
+  })
+
+  return {
+    ...input.current,
+    session: {
+      ...input.current.session,
+      async list(
+        value?: Parameters<ServerApi["session"]["list"]>[0],
+        options?: Parameters<ServerApi["session"]["list"]>[1],
+      ) {
+        if (!(await isV1())) return input.current.session.list(value, options)
+        if (!value?.directory && value?.search !== undefined) {
+          const result = await legacy().experimental.session.list(
+            {
+              roots: value.parentID === null ? true : undefined,
+              search: value.search,
+              limit: value.limit,
+            },
+            options,
+          )
+          return { data: (result.data ?? []).map(sessionInfo), cursor: {} }
+        }
+        const result = await legacy({ directory: value?.directory }).session.list({
+          directory: value?.directory,
+          roots: value?.parentID === null ? true : undefined,
+          search: value?.search,
+          limit: value?.limit,
+        })
+        return { data: (result.data ?? []).map(sessionInfo), cursor: {} }
+      },
+      async create(value?: Parameters<ServerApi["session"]["create"]>[0]) {
+        if (!(await isV1())) return input.current.session.create(value)
+        const result = await legacy(value?.location ?? undefined).session.create({
+          directory: directory(value?.location ?? undefined),
+        })
+        if (!result.data) throw new Error("Failed to create session")
+        return sessionInfo(result.data)
+      },
+      async get(value: Parameters<ServerApi["session"]["get"]>[0]) {
+        if (!(await isV1())) return input.current.session.get(value)
+        const result = await legacy().session.get(value)
+        if (!result.data) throw new Error(`Session not found: ${value.sessionID}`)
+        return sessionInfo(result.data)
+      },
+      async active() {
+        if (!(await isV1())) return input.current.session.active()
+        const result = await legacy().session.status()
+        return Object.fromEntries(
+          Object.entries(result.data ?? {}).flatMap(([sessionID, status]) =>
+            status.type === "idle" ? [] : [[sessionID, { type: "running" as const }]],
+          ),
+        )
+      },
+      async rename(value: Parameters<ServerApi["session"]["rename"]>[0] & LegacyLocation) {
+        if (!(await isV1())) return input.current.session.rename(value)
+        await legacy(value).session.update({ sessionID: value.sessionID, title: value.title })
+      },
+      async archive(value: Parameters<ServerApi["session"]["archive"]>[0] & LegacyLocation) {
+        if (!(await isV1())) return input.current.session.archive(value)
+        await legacy(value).session.update({ sessionID: value.sessionID, time: { archived: Date.now() } })
+      },
+      async remove(value: Parameters<ServerApi["session"]["remove"]>[0] & LegacyLocation) {
+        if (!(await isV1())) return input.current.session.remove(value)
+        await legacy(value).session.delete(value)
+      },
+      async fork(value: Parameters<ServerApi["session"]["fork"]>[0]) {
+        if (!(await isV1())) return input.current.session.fork(value)
+        const result = await legacy().session.fork(value)
+        if (!result.data) throw new Error("Failed to fork session")
+        return sessionInfo(result.data)
+      },
+      async interrupt(value: Parameters<ServerApi["session"]["interrupt"]>[0]) {
+        if (!(await isV1())) return input.current.session.interrupt(value)
+        await legacy().session.abort(value)
+      },
+      async prompt(value: SessionPromptInput & LegacyPrompt) {
+        if (!(await isV1())) return input.current.session.prompt(value)
+        await legacy().session.promptAsync({
+          sessionID: value.sessionID,
+          messageID: value.id ?? undefined,
+          agent: value.agent,
+          model: value.model,
+          variant: value.variant,
+          parts: [
+            { type: "text", text: value.text },
+            ...(value.files ?? []).map((file) => ({
+              type: "file" as const,
+              mime: mime(file.uri),
+              url: file.uri,
+              filename: file.name,
+            })),
+            ...(value.agents ?? []).map((agent) => ({
+              type: "agent" as const,
+              name: agent.name,
+              source: agent.mention
+                ? { value: agent.mention.text, start: agent.mention.start, end: agent.mention.end }
+                : undefined,
+            })),
+          ],
+        })
+        return {
+          admittedSeq: 0,
+          id: value.id ?? "",
+          sessionID: value.sessionID,
+          timeCreated: Date.now(),
+          type: "user",
+          data: { text: value.text },
+          delivery: value.delivery ?? "steer",
+        }
+      },
+      async command(value: SessionCommandInput) {
+        if (!(await isV1())) return input.current.session.command(value)
+        await legacy().session.command({
+          sessionID: value.sessionID,
+          messageID: value.id ?? undefined,
+          command: value.command,
+          arguments: value.arguments ?? "",
+          agent: value.agent ?? undefined,
+          model: value.model ? `${value.model.providerID}/${value.model.id}` : undefined,
+          variant: value.model?.variant,
+          parts: value.files?.map((file) => ({
+            type: "file" as const,
+            mime: mime(file.uri),
+            url: file.uri,
+            filename: file.name,
+          })),
+        })
+        return {
+          admittedSeq: 0,
+          id: value.id ?? "",
+          sessionID: value.sessionID,
+          timeCreated: Date.now(),
+          type: "user",
+          data: { text: `/${value.command} ${value.arguments ?? ""}`.trim() },
+          delivery: value.delivery ?? "steer",
+        }
+      },
+      async shell(value: SessionShellInput & LegacyPrompt) {
+        if (!(await isV1())) return input.current.session.shell(value)
+        await legacy().session.shell({
+          sessionID: value.sessionID,
+          command: value.command,
+          agent: value.agent,
+          model: value.model,
+        })
+      },
+      compact: async (value: SessionCompactInput & { model?: LegacyPrompt["model"] }) => {
+        if (!(await isV1())) return input.current.session.compact(value)
+        if (!value.model) throw new Error("A model is required to compact a V1 session")
+        await legacy().session.summarize({
+          sessionID: value.sessionID,
+          providerID: value.model.providerID,
+          modelID: value.model.modelID,
+        })
+        return {
+          admittedSeq: 0,
+          id: value.id ?? "",
+          sessionID: value.sessionID,
+          timeCreated: Date.now(),
+          type: "compaction",
+        }
+      },
+      revert: {
+        stage: async (value: Parameters<ServerApi["session"]["revert"]["stage"]>[0]) => {
+          if (!(await isV1())) return input.current.session.revert.stage(value)
+          await legacy().session.revert(value)
+          return { messageID: value.messageID }
+        },
+        clear: async (value: Parameters<ServerApi["session"]["revert"]["clear"]>[0]) => {
+          if (!(await isV1())) return input.current.session.revert.clear(value)
+          await legacy().session.unrevert(value)
+        },
+        commit: input.current.session.revert.commit,
+      },
+    },
+    project: {
+      ...input.current.project,
+      async list() {
+        if (!(await isV1())) return input.current.project.list()
+        return ((await legacy().project.list()).data ?? []) as Project[]
+      },
+      async current(value?: Parameters<ServerApi["project"]["current"]>[0]) {
+        if (!(await isV1())) return input.current.project.current(value)
+        const result = await legacy(value?.location).project.current()
+        if (!result.data) throw new Error("Project not found")
+        return { id: result.data.id, directory: result.data.worktree } satisfies ProjectCurrent
+      },
+      async update(value: Parameters<ServerApi["project"]["update"]>[0]) {
+        if (!(await isV1())) return input.current.project.update(value)
+        const project = (await legacy().project.list()).data?.find((item) => item.id === value.projectID)
+        const result = await legacy({ directory: project?.worktree }).project.update({
+          ...value,
+          directory: project?.worktree,
+        })
+        if (!result.data) throw new Error(`Project not found: ${value.projectID}`)
+        return result.data as Project
+      },
+      async directories(value: Parameters<ServerApi["project"]["directories"]>[0]) {
+        if (!(await isV1())) return input.current.project.directories(value)
+        const result = await legacy(value.location).worktree.list()
+        return (result.data ?? []).map((item) => ({ directory: item }))
+      },
+    },
+    path: {
+      ...input.current.path,
+      async get(value?: Parameters<ServerApi["path"]["get"]>[0]) {
+        if (!(await isV1())) return input.current.path.get(value)
+        const result = await legacy(value?.location).path.get()
+        if (!result.data) throw new Error("Path unavailable")
+        return result.data
+      },
+    },
+    vcs: {
+      ...input.current.vcs,
+      async get(value?: Parameters<ServerApi["vcs"]["get"]>[0]) {
+        if (!(await isV1())) return input.current.vcs.get(value)
+        const result = await legacy(value?.location).vcs.get()
+        return located({ branch: result.data?.branch, defaultBranch: undefined }, value?.location)
+      },
+      async status(value?: Parameters<ServerApi["vcs"]["status"]>[0]) {
+        if (!(await isV1())) return input.current.vcs.status(value)
+        const result = await legacy(value?.location).vcs.status()
+        return located(result.data ?? [], value?.location)
+      },
+      async diff(value: Parameters<ServerApi["vcs"]["diff"]>[0]) {
+        if (!(await isV1())) return input.current.vcs.diff(value)
+        const result = await legacy(value.location).vcs.diff({
+          mode: value.mode === "working" ? "git" : value.mode,
+          context: value.context,
+        })
+        return located(
+          (result.data ?? []).map((file) => ({
+            file: file.file,
+            patch: file.patch ?? "",
+            additions: file.additions,
+            deletions: file.deletions,
+            status: file.status ?? "modified",
+          })),
+          value.location,
+        )
+      },
+    },
+    file: {
+      ...input.current.file,
+      async list(value?: Parameters<ServerApi["file"]["list"]>[0]) {
+        if (!(await isV1())) return input.current.file.list(value)
+        const result = await legacy(value?.location).file.list({ path: value?.path ?? "" })
+        return located(result.data ?? [], value?.location)
+      },
+      async find(value: Parameters<ServerApi["file"]["find"]>[0]) {
+        if (!(await isV1())) return input.current.file.find(value)
+        const result = await legacy(value.location).find.files({
+          query: value.query,
+          type: value.type,
+          limit: value.limit,
+        })
+        return located(
+          (result.data ?? []).map((path) => ({ path, type: value.type ?? "file" })),
+          value.location,
+        )
+      },
+    },
+    integration: {
+      ...input.current.integration,
+      async get(value: Parameters<ServerApi["integration"]["get"]>[0]) {
+        if (!(await isV1())) return input.current.integration.get(value)
+        const methods = ((await legacy(value.location).provider.auth()).data?.[value.integrationID] ?? []).map(
+          (method, index) =>
+            method.type === "api"
+              ? { type: "key" as const, label: method.label }
+              : { type: "oauth" as const, id: String(index), label: method.label, prompts: method.prompts },
+        )
+        return located(
+          {
+            id: value.integrationID,
+            name: value.integrationID,
+            methods,
+            connections: [],
+          },
+          value.location,
+        )
+      },
+      connect: {
+        ...input.current.integration.connect,
+        key: async (value: Parameters<ServerApi["integration"]["connect"]["key"]>[0]) => {
+          if (!(await isV1())) return input.current.integration.connect.key(value)
+          await legacy(value.location).auth.set({
+            providerID: value.integrationID,
+            auth: { type: "api", key: value.key },
+          })
+        },
+      },
+      oauth: {
+        ...input.current.integration.oauth,
+        connect: async (value: Parameters<ServerApi["integration"]["oauth"]["connect"]>[0]) => {
+          if (!(await isV1())) return input.current.integration.oauth.connect(value)
+          const method = Number(value.methodID)
+          const result = await legacy(value.location).provider.oauth.authorize(
+            { providerID: value.integrationID, method, inputs: value.inputs },
+            { throwOnError: true },
+          )
+          if (!result.data) throw new Error("Failed to start OAuth authorization")
+          return located(
+            {
+              attemptID: `${value.integrationID}:${method}`,
+              url: result.data.url,
+              instructions: result.data.instructions,
+              mode: result.data.method,
+              time: { created: Date.now(), expires: Date.now() + 10 * 60 * 1000 },
+            },
+            value.location,
+          )
+        },
+        complete: async (value: Parameters<ServerApi["integration"]["oauth"]["complete"]>[0]) => {
+          if (!(await isV1())) return input.current.integration.oauth.complete(value)
+          const method = Number(value.attemptID.split(":").at(-1))
+          await legacy(value.location).provider.oauth.callback(
+            { providerID: value.integrationID, method, code: value.code },
+            { throwOnError: true },
+          )
+        },
+        status: async (value: Parameters<ServerApi["integration"]["oauth"]["status"]>[0]) => {
+          if (!(await isV1())) return input.current.integration.oauth.status(value)
+          const method = Number(value.attemptID.split(":").at(-1))
+          await legacy(value.location).provider.oauth.callback(
+            { providerID: value.integrationID, method },
+            { throwOnError: true },
+          )
+          return located(
+            { status: "complete" as const, time: { created: Date.now(), expires: Date.now() } },
+            value.location,
+          )
+        },
+      },
+    },
+    pty: {
+      ...input.current.pty,
+      async shells(value?: Parameters<ServerApi["pty"]["shells"]>[0]) {
+        if (!(await isV1())) return input.current.pty.shells(value)
+        return located((await legacy(value?.location).pty.shells()).data ?? [], value?.location)
+      },
+      async list(value?: Parameters<ServerApi["pty"]["list"]>[0]) {
+        if (!(await isV1())) return input.current.pty.list(value)
+        return located((await legacy(value?.location).pty.list()).data ?? [], value?.location)
+      },
+      async create(value?: Parameters<ServerApi["pty"]["create"]>[0]) {
+        if (!(await isV1())) return input.current.pty.create(value)
+        const result = await legacy(value?.location).pty.create({
+          command: value?.command,
+          args: value?.args ? [...value.args] : undefined,
+          cwd: value?.cwd,
+          title: value?.title,
+          env: value?.env,
+        })
+        if (!result.data) throw new Error("Failed to create terminal")
+        return located(result.data, value?.location)
+      },
+      async get(value: Parameters<ServerApi["pty"]["get"]>[0]) {
+        if (!(await isV1())) return input.current.pty.get(value)
+        const result = await legacy(value.location).pty.get({ ptyID: value.ptyID })
+        if (!result.data) throw new Error(`Terminal not found: ${value.ptyID}`)
+        return located(result.data, value.location)
+      },
+      async update(value: Parameters<ServerApi["pty"]["update"]>[0]) {
+        if (!(await isV1())) return input.current.pty.update(value)
+        const result = await legacy(value.location).pty.update({
+          ptyID: value.ptyID,
+          title: value.title,
+          size: value.size,
+        })
+        if (!result.data) throw new Error(`Terminal not found: ${value.ptyID}`)
+        return located(result.data, value.location)
+      },
+      async remove(value: Parameters<ServerApi["pty"]["remove"]>[0]) {
+        if (!(await isV1())) return input.current.pty.remove(value)
+        await legacy(value.location).pty.remove({ ptyID: value.ptyID })
+      },
+      async connectToken(value: Parameters<ServerApi["pty"]["connectToken"]>[0]) {
+        if (!(await isV1())) return input.current.pty.connectToken(value)
+        const result = await legacy(value.location).pty.connectToken({ ptyID: value.ptyID })
+        if (!result.data) throw new Error(`Failed to connect terminal: ${value.ptyID}`)
+        return located(result.data, value.location)
+      },
+    },
+    permission: {
+      ...input.current.permission,
+      async reply(value: Parameters<ServerApi["permission"]["reply"]>[0]) {
+        if (!(await isV1())) return input.current.permission.reply(value)
+        await legacy().permission.respond({
+          sessionID: value.sessionID,
+          permissionID: value.requestID,
+          response: value.reply,
+        })
+      },
+    },
+    question: {
+      ...input.current.question,
+      async reply(value: Parameters<ServerApi["question"]["reply"]>[0]) {
+        if (!(await isV1())) return input.current.question.reply(value)
+        await legacy().question.reply({
+          requestID: value.requestID,
+          answers: value.answers.map((answer) => [...answer]),
+        })
+      },
+      async reject(value: Parameters<ServerApi["question"]["reject"]>[0]) {
+        if (!(await isV1())) return input.current.question.reject(value)
+        await legacy().question.reject({ requestID: value.requestID })
+      },
+    },
+  }
+}
diff --git a/packages/app/src/utils/server-health.test.ts b/packages/app/src/utils/server-health.test.ts
index b1c8f2c7e2e0..86df2d8760b6 100644
--- a/packages/app/src/utils/server-health.test.ts
+++ b/packages/app/src/utils/server-health.test.ts
@@ -14,15 +14,32 @@ function abortFromInput(input: RequestInfo | URL, init?: RequestInit) {
 
 describe("checkServerHealth", () => {
   test("returns healthy response with version", async () => {
-    const fetch = (async () =>
-      new Response(JSON.stringify({ healthy: true, version: "1.2.3" }), {
+    let request: URL | undefined
+    const fetch = (async (input: RequestInfo | URL) => {
+      request = input instanceof URL ? input : new URL(input instanceof Request ? input.url : input)
+      return new Response(JSON.stringify({ healthy: true, version: "1.2.3" }), {
         status: 200,
         headers: { "content-type": "application/json" },
-      })) as unknown as typeof globalThis.fetch
+      })
+    }) as unknown as typeof globalThis.fetch
 
     const result = await checkServerHealth(server, fetch)
 
     expect(result).toEqual({ healthy: true, version: "1.2.3" })
+    expect(request?.pathname).toBe("/api/health")
+  })
+
+  test("falls back to the V1 health endpoint", async () => {
+    const paths: string[] = []
+    const fetch = (async (input: RequestInfo | URL) => {
+      const url = input instanceof URL ? input : new URL(input instanceof Request ? input.url : input)
+      paths.push(url.pathname)
+      if (url.pathname === "/api/health") return new Response(undefined, { status: 404 })
+      return Response.json({ healthy: true, version: "1.18.4" })
+    }) as unknown as typeof globalThis.fetch
+
+    expect(await checkServerHealth(server, fetch)).toEqual({ healthy: true, version: "1.18.4" })
+    expect(paths).toEqual(["/api/health", "/global/health"])
   })
 
   test("allows slow servers thirty seconds by default", async () => {
@@ -142,7 +159,7 @@ describe("checkServerHealth", () => {
       retryDelayMs: 1,
     })
 
-    expect(count).toBe(3)
+    expect(count).toBe(6)
     expect(result).toEqual({ healthy: false })
   })
 })
diff --git a/packages/app/src/utils/server-health.ts b/packages/app/src/utils/server-health.ts
index 1b684d9af774..358d39655ff6 100644
--- a/packages/app/src/utils/server-health.ts
+++ b/packages/app/src/utils/server-health.ts
@@ -1,6 +1,7 @@
 import { usePlatform } from "@/context/platform"
 import { ServerConnection } from "@/context/server"
-import { createSdkForServer } from "./server"
+import { authTokenFromCredentials, createSdkForServer } from "./server"
+import { ClientError, OpenCode } from "@opencode-ai/client"
 import { Accessor, createEffect, onCleanup } from "solid-js"
 import { createStore, reconcile } from "solid-js/store"
 
@@ -61,6 +62,7 @@ function wait(ms: number, signal?: AbortSignal) {
 
 function retryable(error: unknown, signal?: AbortSignal) {
   if (signal?.aborted) return false
+  if (error instanceof ClientError) return error.reason === "Transport"
   if (!(error instanceof Error)) return false
   if (error.name === "AbortError" || error.name === "TimeoutError") return false
   if (error instanceof TypeError) return true
@@ -82,15 +84,27 @@ export async function checkServerHealth(
       .then(() => attempt(count + 1))
       .catch(() => ({ healthy: false }))
   }
-  const attempt = (count: number): Promise<ServerHealth> =>
-    createSdkForServer({
-      server,
+  const attempt = async (count: number): Promise<ServerHealth> => {
+    const current = await OpenCode.make({
+      baseUrl: server.url,
       fetch,
-      signal,
+      headers: server.password
+        ? {
+            Authorization: `Basic ${authTokenFromCredentials({ username: server.username, password: server.password })}`,
+          }
+        : undefined,
     })
+      .health.get({ signal })
+      .then((x) => ({ data: { healthy: x.healthy === true, version: x.version } }))
+      .catch((error) => ({ error }))
+    if ("data" in current) return current.data
+    if (signal?.aborted) return { healthy: false }
+
+    return createSdkForServer({ server, fetch, signal })
       .global.health()
       .then((x) => (x.error ? next(count, x.error) : { healthy: x.data?.healthy === true, version: x.data?.version }))
       .catch((error) => next(count, error))
+  }
   return attempt(0).finally(() => timeout?.clear?.())
 }
 
diff --git a/packages/app/src/utils/server-protocol.test.ts b/packages/app/src/utils/server-protocol.test.ts
new file mode 100644
index 000000000000..2130a968c4bc
--- /dev/null
+++ b/packages/app/src/utils/server-protocol.test.ts
@@ -0,0 +1,40 @@
+import { describe, expect, test } from "bun:test"
+import { detectServerProtocol } from "./server-protocol"
+
+const server = { url: "http://localhost:4096" }
+const json = (value: unknown, status = 200) =>
+  new Response(JSON.stringify(value), { status, headers: { "content-type": "application/json" } })
+const mockFetch = (run: (input: string | URL | Request) => Promise<Response>) =>
+  Object.assign(run, { preconnect: globalThis.fetch.preconnect })
+
+describe("detectServerProtocol", () => {
+  test("prefers the legacy health endpoint when both API generations exist", async () => {
+    const fetcher = mockFetch((input) => {
+      const path = new URL(input instanceof Request ? input.url : input).pathname
+      if (path === "/global/health") return Promise.resolve(json({ healthy: true, version: "1.18.4" }))
+      return Promise.resolve(json({ healthy: true, version: "2.0.0", pid: 123 }))
+    })
+
+    expect(await detectServerProtocol(server, fetcher)).toBe("v1")
+  })
+
+  test("recognizes V2 health by its process identifier", async () => {
+    const fetcher = mockFetch((input) => {
+      const path = new URL(input instanceof Request ? input.url : input).pathname
+      if (path === "/global/health") return Promise.resolve(json({}, 404))
+      return Promise.resolve(json({ healthy: true, version: "2.0.0", pid: 123 }))
+    })
+
+    expect(await detectServerProtocol(server, fetcher)).toBe("v2")
+  })
+
+  test("recognizes the transitional V1 API health response", async () => {
+    const fetcher = mockFetch((input) => {
+      const path = new URL(input instanceof Request ? input.url : input).pathname
+      if (path === "/global/health") return Promise.resolve(json({}, 404))
+      return Promise.resolve(json({ healthy: true }))
+    })
+
+    expect(await detectServerProtocol(server, fetcher)).toBe("v1")
+  })
+})
diff --git a/packages/app/src/utils/server-protocol.ts b/packages/app/src/utils/server-protocol.ts
new file mode 100644
index 000000000000..27b8dc208eac
--- /dev/null
+++ b/packages/app/src/utils/server-protocol.ts
@@ -0,0 +1,35 @@
+import type { ServerConnection } from "@/context/server"
+import { authTokenFromCredentials } from "./server"
+
+export type ServerProtocol = "v1" | "v2"
+
+function headers(server: ServerConnection.HttpBase) {
+  if (!server.password) return
+  return {
+    Authorization: `Basic ${authTokenFromCredentials({ username: server.username, password: server.password })}`,
+  }
+}
+
+async function probe(server: ServerConnection.HttpBase, fetch: typeof globalThis.fetch, path: string) {
+  const response = await fetch(new URL(path, server.url), {
+    headers: headers(server),
+    signal: AbortSignal.timeout(5_000),
+  })
+  if (!response.ok || !response.headers.get("content-type")?.includes("application/json")) return
+  const value: unknown = await response.json()
+  if (!value || typeof value !== "object") return
+  return value
+}
+
+export async function detectServerProtocol(
+  server: ServerConnection.HttpBase,
+  fetch: typeof globalThis.fetch,
+): Promise<ServerProtocol> {
+  const legacy = await probe(server, fetch, "/global/health").catch(() => undefined)
+  if (legacy && "healthy" in legacy && legacy.healthy === true) return "v1"
+
+  const current = await probe(server, fetch, "/api/health").catch(() => undefined)
+  if (current && "pid" in current && typeof current.pid === "number") return "v2"
+  if (current && "healthy" in current && current.healthy === true) return "v1"
+  return "v2"
+}
diff --git a/packages/app/src/utils/server.ts b/packages/app/src/utils/server.ts
index 603784e4d42f..bc7de1515fe6 100644
--- a/packages/app/src/utils/server.ts
+++ b/packages/app/src/utils/server.ts
@@ -1,4 +1,23 @@
 import { createOpencodeClient } from "@opencode-ai/sdk/v2/client"
+import { OpenCode } from "@opencode-ai/client/promise"
+import type {
+  AgentApi,
+  CatalogApi,
+  CommandApi,
+  EventApi,
+  FileApi,
+  IntegrationApi,
+  McpApi,
+  MessageApi,
+  PathApi,
+  PermissionApi,
+  ProjectApi,
+  PtyApi,
+  QuestionApi,
+  ReferenceApi,
+  SessionApi,
+  VcsApi,
+} from "@opencode-ai/client/promise"
 import type { ServerConnection } from "@/context/server"
 import { decode64 } from "@/utils/base64"
 
@@ -39,3 +58,39 @@ export function createSdkForServer({
     baseUrl: server.url,
   })
 }
+
+export interface ServerApi extends CatalogApi {
+  readonly agent: AgentApi
+  readonly command: CommandApi
+  readonly event: EventApi
+  readonly file: FileApi
+  readonly integration: IntegrationApi
+  readonly mcp: McpApi
+  readonly message: MessageApi
+  readonly path: PathApi
+  readonly permission: PermissionApi
+  readonly project: ProjectApi
+  readonly pty: PtyApi
+  readonly question: QuestionApi
+  readonly reference: ReferenceApi
+  readonly session: SessionApi
+  readonly vcs: VcsApi
+}
+
+export function createApiForServer(input: {
+  server: ServerConnection.HttpBase
+  fetch?: typeof globalThis.fetch
+}): ServerApi {
+  return OpenCode.make({
+    baseUrl: input.server.url,
+    fetch: input.fetch,
+    headers: input.server.password
+      ? {
+          Authorization: `Basic ${authTokenFromCredentials({
+            username: input.server.username,
+            password: input.server.password,
+          })}`,
+        }
+      : undefined,
+  })
+}
diff --git a/packages/app/src/utils/session-message.test.ts b/packages/app/src/utils/session-message.test.ts
new file mode 100644
index 000000000000..a4455c15fe0f
--- /dev/null
+++ b/packages/app/src/utils/session-message.test.ts
@@ -0,0 +1,200 @@
+import { describe, expect, test } from "bun:test"
+import type { SessionMessageInfo } from "@opencode-ai/client/promise"
+import { normalizeSessionMessages } from "./session-message"
+
+describe("normalizeSessionMessages", () => {
+  test("projects current turns into stable legacy rendering records", () => {
+    const source = [
+      { id: "msg_1", type: "agent-switched", agent: "build", time: { created: 1 } },
+      {
+        id: "msg_2",
+        type: "model-switched",
+        model: { id: "claude", providerID: "anthropic", variant: "high" },
+        time: { created: 2 },
+      },
+      {
+        id: "msg_3",
+        type: "user",
+        text: "inspect this",
+        files: [
+          {
+            data: "aGVsbG8=",
+            mime: "text/plain",
+            name: "note.txt",
+            source: { type: "inline" },
+          },
+        ],
+        agents: [{ name: "review", mention: { text: "@review", start: 0, end: 7 } }],
+        time: { created: 3 },
+      },
+      {
+        id: "msg_4",
+        type: "assistant",
+        agent: "build",
+        model: { id: "claude", providerID: "anthropic", variant: "high" },
+        content: [
+          { type: "reasoning", text: "Thinking", time: { created: 4, completed: 5 } },
+          { type: "text", text: "Result" },
+          {
+            type: "tool",
+            id: "call_1",
+            name: "read",
+            state: {
+              status: "completed",
+              input: { filePath: "note.txt" },
+              structured: { title: "note.txt" },
+              content: [{ type: "text", text: "hello" }],
+            },
+            time: { created: 5, ran: 6, completed: 7 },
+          },
+        ],
+        cost: 0.1,
+        tokens: { input: 10, output: 5, reasoning: 2, cache: { read: 1, write: 0 } },
+        time: { created: 4, completed: 7 },
+      },
+      {
+        id: "msg_5",
+        type: "compaction",
+        status: "completed",
+        reason: "auto",
+        summary: "summary",
+        recent: "recent",
+        time: { created: 8 },
+      },
+    ] satisfies SessionMessageInfo[]
+
+    const result = normalizeSessionMessages("ses_1", source)
+
+    expect(result.messages).toHaveLength(2)
+    expect(result.messages[0]).toMatchObject({
+      id: "msg_3",
+      role: "user",
+      agent: "build",
+      model: { providerID: "anthropic", modelID: "claude", variant: "high" },
+    })
+    expect(result.messages[1]).toMatchObject({ id: "msg_4", role: "assistant", parentID: "msg_3", cost: 0.1 })
+    expect(result.parts.get("msg_3")?.map((part) => part.id)).toEqual([
+      "msg_3:text:0",
+      "msg_3:file:0",
+      "msg_3:agent:0",
+      "msg_5:compaction",
+    ])
+    expect(result.parts.get("msg_4")?.map((part) => part.id)).toEqual(["msg_4:reasoning:0", "msg_4:text:0", "call_1"])
+    expect(result.parts.get("msg_4")?.[2]).toMatchObject({
+      type: "tool",
+      tool: "read",
+      state: { status: "completed", output: "hello" },
+    })
+  })
+
+  test("does not invent a parent for an assistant-only page", () => {
+    const source = [
+      {
+        id: "msg_2",
+        type: "assistant",
+        agent: "build",
+        model: { id: "model", providerID: "provider" },
+        content: [{ type: "text", text: "orphan" }],
+        time: { created: 2 },
+      },
+    ] satisfies SessionMessageInfo[]
+
+    expect(normalizeSessionMessages("ses_1", source).messages).toEqual([])
+  })
+
+  test("projects a current shell message into a renderable standalone turn", () => {
+    const source = [
+      {
+        id: "msg_shell",
+        type: "shell",
+        shellID: "shell_1",
+        command: "printf hello",
+        status: "exited",
+        exit: 0,
+        output: { output: "hello", cursor: 5, size: 5, truncated: false },
+        time: { created: 1, completed: 2 },
+      },
+    ] satisfies SessionMessageInfo[]
+
+    const result = normalizeSessionMessages("ses_1", source)
+
+    expect(result.messages).toEqual([
+      expect.objectContaining({ id: "msg_shell", role: "user" }),
+      expect.objectContaining({ id: "msg_shell:assistant", role: "assistant", parentID: "msg_shell" }),
+    ])
+    expect(result.parts.get("msg_shell")).toEqual([
+      expect.objectContaining({ type: "text", text: "printf hello" }),
+    ])
+    expect(result.parts.get("msg_shell:assistant")).toEqual([
+      expect.objectContaining({
+        type: "tool",
+        tool: "bash",
+        state: expect.objectContaining({
+          status: "completed",
+          input: { command: "printf hello" },
+          output: "hello",
+          title: "Shell",
+        }),
+      }),
+    ])
+  })
+
+  test("adapts current edit fields for the legacy edit renderer", () => {
+    const source = [
+      { id: "msg_user", type: "user", text: "edit it", time: { created: 1 } },
+      {
+        id: "msg_assistant",
+        type: "assistant",
+        agent: "build",
+        model: { id: "model", providerID: "provider" },
+        content: [
+          {
+            type: "tool",
+            id: "call_edit",
+            name: "edit",
+            state: {
+              status: "completed",
+              input: { path: "/repo/README.md", oldString: "old", newString: "new" },
+              content: [{ type: "text", text: "Edited file successfully" }],
+              structured: {
+                files: [
+                  {
+                    file: "README.md",
+                    patch: "@@ -1 +1 @@\n-old\n+new",
+                    additions: 1,
+                    deletions: 1,
+                    status: "modified",
+                  },
+                ],
+                replacements: 1,
+              },
+            },
+            time: { created: 2, ran: 3, completed: 4 },
+          },
+        ],
+        time: { created: 2, completed: 4 },
+      },
+    ] satisfies SessionMessageInfo[]
+
+    const result = normalizeSessionMessages("ses_1", source)
+
+    expect(result.parts.get("msg_assistant")).toEqual([
+      expect.objectContaining({
+        type: "tool",
+        tool: "edit",
+        state: expect.objectContaining({
+          status: "completed",
+          input: expect.objectContaining({ path: "/repo/README.md", filePath: "/repo/README.md" }),
+          metadata: expect.objectContaining({
+            filediff: {
+              file: "README.md",
+              patch: "@@ -1 +1 @@\n-old\n+new",
+              additions: 1,
+              deletions: 1,
+            },
+          }),
+        }),
+      }),
+    ])
+  })
+})
diff --git a/packages/app/src/utils/session-message.ts b/packages/app/src/utils/session-message.ts
new file mode 100644
index 000000000000..71eebb864efd
--- /dev/null
+++ b/packages/app/src/utils/session-message.ts
@@ -0,0 +1,348 @@
+import type {
+  SessionMessageAssistant,
+  SessionMessageAssistantTool,
+  SessionMessageInfo,
+  SessionMessageShell,
+  SessionMessageUser,
+} from "@opencode-ai/client/promise"
+import type { AssistantMessage, FilePart, Message, Part, ToolPart, UserMessage } from "@opencode-ai/sdk/v2"
+import { Option, Schema } from "effect"
+
+const emptyTokens = { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } }
+const emptyModel: { id: string; providerID: string; variant?: string } = { id: "", providerID: "" }
+const decodeToolInput = Schema.decodeUnknownOption(Schema.UnknownFromJsonString)
+
+function record(value: unknown): value is Record<string, unknown> {
+  return !!value && typeof value === "object" && !Array.isArray(value)
+}
+
+function normalizeToolInput(name: string, input: Record<string, unknown>) {
+  if (!["edit", "write"].includes(name) || typeof input.path !== "string" || typeof input.filePath === "string")
+    return input
+  return { ...input, filePath: input.path }
+}
+
+function normalizeToolMetadata(name: string, metadata: Record<string, unknown>) {
+  if (name !== "edit" || !Array.isArray(metadata.files)) return metadata
+  const file = metadata.files.find(record)
+  if (!file || typeof file.file !== "string") return metadata
+  return {
+    ...metadata,
+    filediff: {
+      file: file.file,
+      patch: typeof file.patch === "string" ? file.patch : undefined,
+      additions: typeof file.additions === "number" ? file.additions : 0,
+      deletions: typeof file.deletions === "number" ? file.deletions : 0,
+    },
+  }
+}
+
+export function normalizeSessionMessages(sessionID: string, source: readonly SessionMessageInfo[]) {
+  const messages: Message[] = []
+  const parts = new Map<string, Part[]>()
+  let agent = ""
+  let model = emptyModel
+  let parentID: string | undefined
+
+  source.forEach((message) => {
+    if (message.type === "agent-switched") {
+      agent = message.agent
+      return
+    }
+    if (message.type === "model-switched") {
+      model = message.model
+      return
+    }
+    if (message.type === "user") {
+      parentID = message.id
+      messages.push(userMessage(sessionID, message, agent, model))
+      parts.set(message.id, userParts(sessionID, message))
+      return
+    }
+    if (message.type === "synthetic" && message.description?.trim()) {
+      parentID = message.id
+      messages.push({
+        id: message.id,
+        sessionID,
+        role: "user",
+        time: message.time,
+        agent,
+        model: { providerID: model.providerID, modelID: model.id, variant: model.variant },
+      })
+      parts.set(message.id, [textPart(sessionID, message.id, 0, message.description, true)])
+      return
+    }
+    if (message.type === "shell") {
+      messages.push(...shellMessages(sessionID, message, agent, model))
+      parts.set(message.id, [textPart(sessionID, message.id, 0, message.command)])
+      parts.set(`${message.id}:assistant`, [shellPart(sessionID, message)])
+      parentID = undefined
+      return
+    }
+    if (message.type === "assistant") {
+      agent = message.agent
+      model = message.model
+      if (!parentID) return
+      const parent = messages.findLast((item) => item.id === parentID)
+      if (parent?.role === "user") {
+        parent.agent = message.agent
+        parent.model = {
+          providerID: message.model.providerID,
+          modelID: message.model.id,
+          variant: message.model.variant,
+        }
+      }
+      messages.push(assistantMessage(sessionID, parentID, message))
+      parts.set(message.id, assistantParts(sessionID, message))
+      return
+    }
+    if (message.type !== "compaction" || !parentID) return
+    parts.set(parentID, [
+      ...(parts.get(parentID) ?? []),
+      {
+        id: `${message.id}:compaction`,
+        sessionID,
+        messageID: parentID,
+        type: "compaction",
+        auto: message.reason === "auto",
+      },
+    ])
+  })
+
+  return { messages, parts }
+}
+
+function shellMessages(
+  sessionID: string,
+  message: SessionMessageShell,
+  agent: string,
+  model: { id: string; providerID: string; variant?: string },
+): [UserMessage, AssistantMessage] {
+  return [
+    {
+      id: message.id,
+      sessionID,
+      role: "user",
+      time: { created: message.time.created },
+      agent,
+      model: { providerID: model.providerID, modelID: model.id, variant: model.variant },
+    },
+    {
+      id: `${message.id}:assistant`,
+      sessionID,
+      role: "assistant",
+      time: message.time,
+      parentID: message.id,
+      modelID: model.id,
+      providerID: model.providerID,
+      variant: model.variant,
+      mode: agent,
+      agent,
+      path: { cwd: "", root: "" },
+      cost: 0,
+      tokens: emptyTokens,
+    },
+  ]
+}
+
+function shellPart(sessionID: string, message: SessionMessageShell): ToolPart {
+  const input = { command: message.command }
+  const start = message.time.created
+  const state: ToolPart["state"] =
+    message.status === "running"
+      ? { status: "running", input, time: { start } }
+      : {
+          status: "completed",
+          input,
+          output: message.output?.output ?? "",
+          title: "Shell",
+          metadata: {
+            status: message.status,
+            exit: message.exit,
+            truncated: message.output?.truncated,
+          },
+          time: { start, end: message.time.completed ?? start },
+        }
+  return {
+    id: `${message.id}:tool`,
+    sessionID,
+    messageID: `${message.id}:assistant`,
+    type: "tool",
+    callID: message.shellID,
+    tool: "bash",
+    state,
+  }
+}
+
+export function sessionMessagePartID(messageID: string, type: "text" | "reasoning", ordinal: number) {
+  return `${messageID}:${type}:${ordinal}`
+}
+
+function userMessage(
+  sessionID: string,
+  message: SessionMessageUser,
+  agent: string,
+  model: { id: string; providerID: string; variant?: string },
+): UserMessage {
+  return {
+    id: message.id,
+    sessionID,
+    role: "user",
+    time: message.time,
+    agent,
+    model: { providerID: model.providerID, modelID: model.id, variant: model.variant },
+  }
+}
+
+function userParts(sessionID: string, message: SessionMessageUser): Part[] {
+  return [
+    textPart(sessionID, message.id, 0, message.text),
+    ...(message.files ?? []).map(
+      (file, index): FilePart => ({
+        id: `${message.id}:file:${index}`,
+        sessionID,
+        messageID: message.id,
+        type: "file",
+        mime: file.mime,
+        filename: file.name,
+        url: file.source.type === "uri" ? file.source.uri : `data:${file.mime};base64,${file.data}`,
+      }),
+    ),
+    ...(message.agents ?? []).map(
+      (item, index): Part => ({
+        id: `${message.id}:agent:${index}`,
+        sessionID,
+        messageID: message.id,
+        type: "agent",
+        name: item.name,
+        source: item.mention
+          ? { value: item.mention.text, start: item.mention.start, end: item.mention.end }
+          : undefined,
+      }),
+    ),
+  ]
+}
+
+function assistantMessage(sessionID: string, parentID: string, message: SessionMessageAssistant): AssistantMessage {
+  const error = message.error
+    ? message.error.type.toLowerCase().includes("abort") || message.error.type.toLowerCase().includes("interrupt")
+      ? { name: "MessageAbortedError" as const, data: { message: message.error.message } }
+      : { name: "UnknownError" as const, data: { message: message.error.message } }
+    : undefined
+  return {
+    id: message.id,
+    sessionID,
+    role: "assistant",
+    time: message.time,
+    error,
+    parentID,
+    modelID: message.model.id,
+    providerID: message.model.providerID,
+    variant: message.model.variant,
+    mode: message.agent,
+    agent: message.agent,
+    path: { cwd: "", root: "" },
+    cost: message.cost ?? 0,
+    tokens: message.tokens ?? emptyTokens,
+    finish: message.finish,
+  }
+}
+
+function assistantParts(sessionID: string, message: SessionMessageAssistant): Part[] {
+  const ordinals = { text: 0, reasoning: 0 }
+  return message.content.flatMap((content): Part[] => {
+    if (content.type === "text") {
+      const part = textPart(sessionID, message.id, ordinals.text++, content.text)
+      return content.text.trim() ? [part] : []
+    }
+    if (content.type === "reasoning") {
+      const part: Part = {
+        id: sessionMessagePartID(message.id, "reasoning", ordinals.reasoning++),
+        sessionID,
+        messageID: message.id,
+        type: "reasoning",
+        text: content.text,
+        metadata: content.state,
+        time: {
+          start: content.time?.created ?? message.time.created,
+          end: content.time?.completed,
+        },
+      }
+      return content.text.trim() ? [part] : []
+    }
+    return [toolPart(sessionID, message.id, content)]
+  })
+}
+
+function textPart(sessionID: string, messageID: string, ordinal: number, text: string, synthetic?: boolean): Part {
+  return {
+    id: sessionMessagePartID(messageID, "text", ordinal),
+    sessionID,
+    messageID,
+    type: "text",
+    text,
+    synthetic,
+  }
+}
+
+function toolPart(sessionID: string, messageID: string, tool: SessionMessageAssistantTool): ToolPart {
+  const start = tool.time.ran ?? tool.time.created
+  const state = (() => {
+    if (tool.state.status === "streaming") {
+      const value = Option.getOrUndefined(decodeToolInput(tool.state.input))
+      const input = normalizeToolInput(tool.name, record(value) ? value : {})
+      return { status: "pending" as const, input, raw: tool.state.input }
+    }
+    if (tool.state.status === "running") {
+      return {
+        status: "running" as const,
+        input: normalizeToolInput(tool.name, tool.state.input),
+        metadata: normalizeToolMetadata(tool.name, tool.state.structured),
+        time: { start },
+      }
+    }
+    if (tool.state.status === "error") {
+      return {
+        status: "error" as const,
+        input: normalizeToolInput(tool.name, tool.state.input),
+        error: tool.state.error.message,
+        metadata: normalizeToolMetadata(tool.name, tool.state.structured),
+        time: { start, end: tool.time.completed ?? start },
+      }
+    }
+    const attachments = tool.state.content.flatMap((item, index): FilePart[] =>
+      item.type === "file"
+        ? [
+            {
+              id: `${tool.id}:file:${index}`,
+              sessionID,
+              messageID,
+              type: "file",
+              mime: item.mime,
+              filename: item.name,
+              url: item.uri,
+            },
+          ]
+        : [],
+    )
+    return {
+      status: "completed" as const,
+      input: normalizeToolInput(tool.name, tool.state.input),
+      output: tool.state.content.flatMap((item) => (item.type === "text" ? [item.text] : [])).join("\n"),
+      title: tool.name,
+      metadata: normalizeToolMetadata(tool.name, tool.state.structured),
+      time: { start, end: tool.time.completed ?? start },
+      attachments: attachments.length ? attachments : undefined,
+    }
+  })()
+  return {
+    id: tool.id,
+    sessionID,
+    messageID,
+    type: "tool",
+    callID: tool.id,
+    tool: tool.name,
+    state,
+    metadata: { providerState: tool.providerState, providerResultState: tool.providerResultState },
+  }
+}
diff --git a/packages/app/src/utils/session.test.ts b/packages/app/src/utils/session.test.ts
new file mode 100644
index 000000000000..b15c23b66048
--- /dev/null
+++ b/packages/app/src/utils/session.test.ts
@@ -0,0 +1,94 @@
+import { describe, expect, test } from "bun:test"
+import type { SessionApi, SessionInfo, SessionListInput } from "@opencode-ai/client/promise"
+import { listAllSessions, normalizeSessionInfo } from "./session"
+
+describe("normalizeSessionInfo", () => {
+  test("adapts a current session to the app session shape", () => {
+    const result = normalizeSessionInfo({
+      id: "session-1",
+      projectID: "project-1",
+      agent: "build",
+      model: { id: "gpt-5", providerID: "openai", variant: "high" },
+      cost: 0,
+      tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+      time: { created: 1, updated: 1 },
+      title: "New session",
+      location: { directory: "/repo/worktree", workspaceID: "workspace-1" },
+      subpath: "worktree",
+      revert: { messageID: "message-1", partID: "part-1", snapshot: "snapshot", files: [] },
+    } as SessionInfo)
+
+    expect(result).toEqual({
+      id: "session-1",
+      slug: "session-1",
+      projectID: "project-1",
+      workspaceID: "workspace-1",
+      directory: "/repo/worktree",
+      path: "worktree",
+      parentID: undefined,
+      cost: 0,
+      tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+      title: "New session",
+      agent: "build",
+      model: { id: "gpt-5", providerID: "openai", variant: "high" },
+      version: "",
+      time: { created: 1, updated: 1 },
+      revert: { messageID: "message-1", partID: "part-1", snapshot: "snapshot" },
+    })
+  })
+})
+
+describe("listAllSessions", () => {
+  test("loads every page in server order and retains the query", async () => {
+    const calls: SessionListInput[] = []
+    const pages = new Map<string | undefined, { data: SessionInfo[]; cursor: { next?: string } }>([
+      [undefined, { data: [sessionInfo("session-3"), sessionInfo("session-2")], cursor: { next: "next" } }],
+      ["next", { data: [sessionInfo("session-1", true)], cursor: {} }],
+    ])
+    const api = {
+      list: async (query = {}) => {
+        calls.push(query)
+        return pages.get(query.cursor) ?? { data: [], cursor: {} }
+      },
+    } satisfies Pick<SessionApi, "list">
+
+    const result = await listAllSessions(api, { directory: "/repo", order: "desc" })
+
+    expect(result.map((session) => session.id)).toEqual(["session-3", "session-2", "session-1"])
+    expect(result[2]?.time.archived).toBe(2)
+    expect(calls).toEqual([
+      { directory: "/repo", order: "desc", limit: 100, cursor: undefined },
+      { directory: "/repo", order: "desc", limit: 100, cursor: "next" },
+    ])
+  })
+
+  test("requests the terminal empty page when the server returns a next cursor", async () => {
+    const cursors: Array<string | undefined> = []
+    const api = {
+      list: async (query = {}) => {
+        cursors.push(query.cursor)
+        if (query.cursor) return { data: [], cursor: { next: "unused" } }
+        return { data: [sessionInfo("session-1")], cursor: { next: "terminal" } }
+      },
+    } satisfies Pick<SessionApi, "list">
+
+    const result = await listAllSessions(api, { directory: "/repo", limit: 25 })
+
+    expect(result.map((session) => session.id)).toEqual(["session-1"])
+    expect(cursors).toEqual([undefined, "terminal"])
+  })
+})
+
+function sessionInfo(id: string, archived = false) {
+  return {
+    id,
+    projectID: "project-1",
+    agent: "build",
+    model: { id: "model-1", providerID: "provider-1" },
+    cost: 0,
+    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    time: { created: 1, updated: 1, archived: archived ? 2 : undefined },
+    title: id,
+    location: { directory: "/repo" },
+  } as SessionInfo
+}
diff --git a/packages/app/src/utils/session.ts b/packages/app/src/utils/session.ts
new file mode 100644
index 000000000000..faf847967bdd
--- /dev/null
+++ b/packages/app/src/utils/session.ts
@@ -0,0 +1,37 @@
+import type { SessionApi, SessionInfo, SessionListInput } from "@opencode-ai/client/promise"
+import type { Session } from "@opencode-ai/sdk/v2/client"
+
+export function normalizeSessionInfo(input: SessionInfo | Session): Session {
+  if (!("location" in input)) return input
+  return {
+    id: input.id,
+    slug: input.id,
+    projectID: input.projectID,
+    workspaceID: input.location.workspaceID,
+    directory: input.location.directory,
+    path: input.subpath,
+    parentID: input.parentID,
+    cost: input.cost,
+    tokens: input.tokens,
+    title: input.title,
+    agent: input.agent,
+    model: input.model,
+    version: "",
+    time: input.time,
+    revert: input.revert && {
+      messageID: input.revert.messageID,
+      partID: input.revert.partID,
+      snapshot: input.revert.snapshot,
+    },
+  }
+}
+
+export async function listAllSessions(api: Pick<SessionApi, "list">, input: Omit<SessionListInput, "cursor">) {
+  const load = async (cursor?: string): Promise<Session[]> => {
+    const result = await api.list({ ...input, limit: input.limit ?? 100, cursor })
+    const sessions = result.data.map(normalizeSessionInfo)
+    if (result.data.length === 0 || !result.cursor.next) return sessions
+    return [...sessions, ...(await load(result.cursor.next))]
+  }
+  return load()
+}
diff --git a/packages/app/src/utils/terminal-websocket-url.test.ts b/packages/app/src/utils/terminal-websocket-url.test.ts
index 5fa1506b1e65..3c6e61a0f2a8 100644
--- a/packages/app/src/utils/terminal-websocket-url.test.ts
+++ b/packages/app/src/utils/terminal-websocket-url.test.ts
@@ -2,51 +2,22 @@ import { describe, expect, test } from "bun:test"
 import { terminalWebSocketURL } from "./terminal-websocket-url"
 
 describe("terminalWebSocketURL", () => {
-  test("uses query auth without embedding credentials in websocket URL", () => {
+  test("uses the current ticketed PTY route", () => {
     const url = terminalWebSocketURL({
       url: "http://127.0.0.1:49365",
       id: "pty_test",
       directory: "/tmp/project",
       cursor: 0,
-      sameOrigin: false,
-      username: "opencode",
-      password: "secret",
+      ticket: "connect-ticket",
     })
 
     expect(url.protocol).toBe("ws:")
     expect(url.username).toBe("")
     expect(url.password).toBe("")
-    expect(url.searchParams.get("auth_token")).toBe(btoa("opencode:secret"))
-  })
-
-  test("omits query auth for same-origin saved credentials", () => {
-    const url = terminalWebSocketURL({
-      url: "https://app.example.test",
-      id: "pty_test",
-      directory: "/tmp/project",
-      cursor: 10,
-      sameOrigin: true,
-      username: "opencode",
-      password: "secret",
-    })
-
-    expect(url.protocol).toBe("wss:")
+    expect(url.pathname).toBe("/api/pty/pty_test/connect")
+    expect(url.searchParams.get("location[directory]")).toBe("/tmp/project")
+    expect(url.searchParams.get("cursor")).toBe("0")
+    expect(url.searchParams.get("ticket")).toBe("connect-ticket")
     expect(url.searchParams.has("auth_token")).toBe(false)
   })
-
-  test("uses query auth for same-origin credentials from auth_token", () => {
-    const url = terminalWebSocketURL({
-      url: "https://app.example.test",
-      id: "pty_test",
-      directory: "/tmp/project",
-      cursor: 10,
-      sameOrigin: true,
-      username: "opencode",
-      password: "secret",
-      authToken: true,
-    })
-
-    expect(url.protocol).toBe("wss:")
-    expect(url.searchParams.get("auth_token")).toBe(btoa("opencode:secret"))
-  })
 })
diff --git a/packages/app/src/utils/terminal-websocket-url.ts b/packages/app/src/utils/terminal-websocket-url.ts
index 06facdc7d245..25991e09835c 100644
--- a/packages/app/src/utils/terminal-websocket-url.ts
+++ b/packages/app/src/utils/terminal-websocket-url.ts
@@ -1,28 +1,14 @@
-import { authTokenFromCredentials } from "@/utils/server"
-
 export function terminalWebSocketURL(input: {
   url: string
   id: string
   directory: string
   cursor: number
-  ticket?: string
-  sameOrigin?: boolean
-  username?: string
-  password?: string
-  authToken?: boolean
+  ticket: string
 }) {
-  const next = new URL(`${input.url}/pty/${input.id}/connect`)
-  next.searchParams.set("directory", input.directory)
+  const next = new URL(`${input.url}/api/pty/${input.id}/connect`)
+  next.searchParams.set("location[directory]", input.directory)
   next.searchParams.set("cursor", String(input.cursor))
   next.protocol = next.protocol === "https:" ? "wss:" : "ws:"
-  if (input.ticket) {
-    next.searchParams.set("ticket", input.ticket)
-    return next
-  }
-  if (input.password && (!input.sameOrigin || input.authToken))
-    next.searchParams.set(
-      "auth_token",
-      authTokenFromCredentials({ username: input.username, password: input.password }),
-    )
+  next.searchParams.set("ticket", input.ticket)
   return next
 }
diff --git a/packages/app/test-browser/command-palette.test.ts b/packages/app/test-browser/command-palette.test.ts
index 421a2e71fd32..6a74834fd076 100644
--- a/packages/app/test-browser/command-palette.test.ts
+++ b/packages/app/test-browser/command-palette.test.ts
@@ -1,5 +1,6 @@
 import { describe, expect, test } from "bun:test"
-import type { GlobalSession, Project } from "@opencode-ai/sdk/v2/client"
+import type { Project } from "@opencode-ai/sdk/v2/client"
+import type { SessionInfo } from "@opencode-ai/client/promise"
 import { createRoot } from "solid-js"
 import { createServerSessionEntries } from "@/components/command-palette"
 import type { LocalProject } from "@/context/layout"
@@ -14,15 +15,16 @@ const stored: Project = {
   time: { created: 1, updated: 1 },
 }
 
-const session: GlobalSession = {
+const session: SessionInfo = {
   id: "session-1",
-  slug: "session-1",
   projectID: stored.id,
-  directory: stored.worktree,
+  agent: "build",
+  model: { id: "model-1", providerID: "provider-1" },
+  cost: 0,
+  tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+  location: { directory: stored.worktree },
   title: "Palette session",
-  version: "1",
   time: { created: 1, updated: 2 },
-  project: { id: stored.id, name: stored.name, worktree: stored.worktree },
 }
 
 describe("command palette sessions", () => {
diff --git a/packages/app/vendor/opencode-ai-client-1.17.13.tgz b/packages/app/vendor/opencode-ai-client-1.17.13.tgz
new file mode 100644
index 000000000000..5939f2cb39c2
Binary files /dev/null and b/packages/app/vendor/opencode-ai-client-1.17.13.tgz differ
diff --git a/packages/desktop/src/main/server.ts b/packages/desktop/src/main/server.ts
index b213dbc82a23..0f2d9d6ad120 100644
--- a/packages/desktop/src/main/server.ts
+++ b/packages/desktop/src/main/server.ts
@@ -182,9 +182,9 @@ export async function spawnLocalServer(
 }
 
 export async function checkHealth(url: string, password?: string | null): Promise<boolean> {
-  let healthUrl: URL
+  let healthUrls: URL[]
   try {
-    healthUrl = new URL("/global/health", url)
+    healthUrls = [new URL("/api/health", url), new URL("/global/health", url)]
   } catch {
     return false
   }
@@ -195,16 +195,17 @@ export async function checkHealth(url: string, password?: string | null): Promis
     headers.set("authorization", `Basic ${auth}`)
   }
 
-  try {
-    const res = await fetch(healthUrl, {
-      method: "GET",
-      headers,
-      signal: AbortSignal.timeout(3000),
-    })
-    return res.ok
-  } catch {
-    return false
+  for (const healthUrl of healthUrls) {
+    try {
+      const res = await fetch(healthUrl, {
+        method: "GET",
+        headers,
+        signal: AbortSignal.timeout(3000),
+      })
+      if (res.ok) return true
+    } catch {}
   }
+  return false
 }
 
 function createSidecarEnv(): Record<string, string> {
diff --git a/packages/session-ui/package.json b/packages/session-ui/package.json
index 96611da331ec..3cf74b043b67 100644
--- a/packages/session-ui/package.json
+++ b/packages/session-ui/package.json
@@ -39,6 +39,7 @@
   },
   "dependencies": {
     "@kobalte/core": "catalog:",
+    "@opencode-ai/client": "file:../app/vendor/opencode-ai-client-1.17.13.tgz",
     "@opencode-ai/core": "workspace:*",
     "@opencode-ai/sdk": "workspace:*",
     "@opencode-ai/ui": "workspace:*",
diff --git a/packages/session-ui/src/components/message-part.tsx b/packages/session-ui/src/components/message-part.tsx
index ce2f7b25c3e1..55275f3ab9aa 100644
--- a/packages/session-ui/src/components/message-part.tsx
+++ b/packages/session-ui/src/components/message-part.tsx
@@ -521,6 +521,7 @@ export function getToolInfo(
       }
     }
     case "bash":
+    case "shell":
       return {
         icon: "console",
         title: i18n.t("ui.tool.shell"),
@@ -538,6 +539,7 @@ export function getToolInfo(
         title: i18n.t("ui.messagePart.title.write"),
         subtitle: input.filePath ? getFilename(input.filePath) : undefined,
       }
+    case "patch":
     case "apply_patch":
       return {
         icon: "code-lines",
@@ -729,8 +731,8 @@ export function renderable(part: PartType, showReasoningSummaries = true) {
 }
 
 function toolDefaultOpen(tool: string, shell = false, edit = false) {
-  if (tool === "bash") return shell
-  if (tool === "edit" || tool === "write" || tool === "apply_patch") return edit
+  if (tool === "bash" || tool === "shell") return shell
+  if (tool === "edit" || tool === "write" || tool === "patch" || tool === "apply_patch") return edit
 }
 
 export function partDefaultOpen(part: PartType, shell = false, edit = false) {
@@ -1506,7 +1508,7 @@ export function registerTool(input: { name: string; render?: ToolComponent }) {
 }
 
 export function getTool(name: string) {
-  return state[name]?.render
+  return state[name === "apply_patch" ? "patch" : name === "bash" ? "shell" : name]?.render
 }
 
 export const ToolRegistry = {
@@ -2101,7 +2103,7 @@ ToolRegistry.register({
 })
 
 ToolRegistry.register({
-  name: "bash",
+  name: "shell",
   render(props) {
     const i18n = useI18n()
     const pending = () => props.status === "pending" || props.status === "running"
@@ -2337,7 +2339,7 @@ ToolRegistry.register({
 })
 
 ToolRegistry.register({
-  name: "apply_patch",
+  name: "patch",
   render(props) {
     const i18n = useI18n()
     const fileComponent = useFileComponent()
diff --git a/packages/session-ui/src/components/session-diff.ts b/packages/session-ui/src/components/session-diff.ts
index 48e8eee3108a..2fbd022235f9 100644
--- a/packages/session-ui/src/components/session-diff.ts
+++ b/packages/session-ui/src/components/session-diff.ts
@@ -1,6 +1,7 @@
 import { parseDiffFromFile, parsePatchFiles, type FileDiffMetadata } from "@pierre/diffs"
 import { parsePatch } from "diff"
 import type { SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 
 type LegacyDiff = {
   file: string
@@ -13,7 +14,7 @@ type LegacyDiff = {
 }
 
 type SnapshotDiff = SnapshotFileDiff & { file: string }
-type ReviewDiff = SnapshotDiff | VcsFileDiff | LegacyDiff
+type ReviewDiff = SnapshotDiff | FileDiffInfo | VcsFileDiff | LegacyDiff
 export type DiffSource = Pick<LegacyDiff, "file" | "patch" | "before" | "after">
 
 export type ViewDiff = {
diff --git a/packages/session-ui/src/components/session-review.tsx b/packages/session-ui/src/components/session-review.tsx
index 8db21f025b71..1585a8aa3278 100644
--- a/packages/session-ui/src/components/session-review.tsx
+++ b/packages/session-ui/src/components/session-review.tsx
@@ -16,6 +16,7 @@ import { checksum } from "@opencode-ai/core/util/encode"
 import { createEffect, createMemo, For, Match, onCleanup, Show, Switch, untrack, type JSX } from "solid-js"
 import { createStore } from "solid-js/store"
 import { type FileContent, type SnapshotFileDiff, type VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import { PreloadMultiFileDiffResult } from "@pierre/diffs/ssr"
 import { type SelectedLineRange } from "@pierre/diffs"
 import { Dynamic } from "solid-js/web"
@@ -62,10 +63,10 @@ export type SessionReviewCommentActions = {
 
 export type SessionReviewFocus = { file: string; id: string }
 
-type RawReviewDiff = (SnapshotFileDiff | VcsFileDiff) & {
+type RawReviewDiff = (SnapshotFileDiff | FileDiffInfo | VcsFileDiff) & {
   preloaded?: PreloadMultiFileDiffResult<any>
 }
-type ReviewDiff = ((SnapshotFileDiff & { file: string }) | VcsFileDiff) & {
+type ReviewDiff = ((SnapshotFileDiff & { file: string }) | FileDiffInfo | VcsFileDiff) & {
   preloaded?: PreloadMultiFileDiffResult<any>
 }
 type Item = ViewDiff & { preloaded?: PreloadMultiFileDiffResult<any> }
diff --git a/packages/session-ui/src/components/session-turn.tsx b/packages/session-ui/src/components/session-turn.tsx
index 75274fc50e92..301a74d3f03d 100644
--- a/packages/session-ui/src/components/session-turn.tsx
+++ b/packages/session-ui/src/components/session-turn.tsx
@@ -4,6 +4,7 @@ import {
   Message as MessageType,
   Part as PartType,
 } from "@opencode-ai/sdk/v2/client"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import type { SessionStatus } from "@opencode-ai/sdk/v2"
 import { useData } from "../context"
 import { useFileComponent } from "@opencode-ai/ui/context/file"
@@ -90,7 +91,7 @@ function list<T>(value: T[] | undefined | null, fallback: T[]) {
   return fallback
 }
 
-type SummaryDiff = SnapshotFileDiff & { file: string }
+type SummaryDiff = (SnapshotFileDiff & { file: string }) | FileDiffInfo
 
 function summaryDiff(value: SnapshotFileDiff): value is SummaryDiff {
   return typeof value.file === "string"
diff --git a/packages/session-ui/src/components/tool-error-card.tsx b/packages/session-ui/src/components/tool-error-card.tsx
index 35720a275313..4313d48aef4e 100644
--- a/packages/session-ui/src/components/tool-error-card.tsx
+++ b/packages/session-ui/src/components/tool-error-card.tsx
@@ -51,6 +51,8 @@ export function ToolErrorCard(props: ToolErrorCardProps) {
       webfetch: "ui.tool.webfetch",
       websearch: "ui.tool.websearch",
       bash: "ui.tool.shell",
+      shell: "ui.tool.shell",
+      patch: "ui.tool.patch",
       apply_patch: "ui.tool.patch",
       question: "ui.tool.questions",
     }
diff --git a/packages/session-ui/src/context/data.tsx b/packages/session-ui/src/context/data.tsx
index 999ff510d5f0..056fc9c0fd98 100644
--- a/packages/session-ui/src/context/data.tsx
+++ b/packages/session-ui/src/context/data.tsx
@@ -1,4 +1,5 @@
 import type { Message, Session, Part, SnapshotFileDiff, SessionStatus, Provider } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import { createSimpleContext } from "@opencode-ai/ui/context"
 import { PreloadMultiFileDiffResult } from "@pierre/diffs/ssr"
 
@@ -21,7 +22,7 @@ type Data = {
     [sessionID: string]: SessionStatus
   }
   session_diff: {
-    [sessionID: string]: SnapshotFileDiff[]
+    [sessionID: string]: (SnapshotFileDiff | FileDiffInfo)[]
   }
   session_diff_preload?: {
     [sessionID: string]: PreloadMultiFileDiffResult<any>[]
diff --git a/packages/session-ui/src/v2/components/session-review-file-preview-v2.tsx b/packages/session-ui/src/v2/components/session-review-file-preview-v2.tsx
index 9f42cd90fec6..ba276a8f52cf 100644
--- a/packages/session-ui/src/v2/components/session-review-file-preview-v2.tsx
+++ b/packages/session-ui/src/v2/components/session-review-file-preview-v2.tsx
@@ -7,6 +7,7 @@ import { useI18n } from "@opencode-ai/ui/context/i18n"
 import { mediaKindFromPath } from "../../pierre/media"
 import { cloneSelectedLineRange, previewSelectedLines } from "../../pierre/selection-bridge"
 import type { FileContent, SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
+import type { FileDiffInfo } from "@opencode-ai/client/promise"
 import { createEffect, createMemo, onCleanup, Show, untrack } from "solid-js"
 import { createStore } from "solid-js/store"
 import { Dynamic } from "solid-js/web"
@@ -27,7 +28,7 @@ import { LineCommentV2OverflowIcon } from "@opencode-ai/ui/v2/line-comment-v2"
 import { MenuV2 } from "@opencode-ai/ui/v2/menu-v2"
 import "./session-review-v2.css"
 
-type ReviewDiff = (SnapshotFileDiff & { file: string }) | VcsFileDiff
+type ReviewDiff = (SnapshotFileDiff & { file: string }) | FileDiffInfo | VcsFileDiff
 
 export type SessionReviewFilePreviewV2Props = {
   file: string