diff --git a/src/api/routes.ts b/src/api/routes.ts
index 37329957c4..475902ed15 100644
--- a/src/api/routes.ts
+++ b/src/api/routes.ts
@@ -45,6 +45,7 @@ import {
   getCommandUsefulnessSummary,
   getFreshOfficialMinerDetection,
   getIssue,
+  getInstallation,
   getInstallationHealth,
   getLatestRepoGithubTotalsSnapshot,
   getLatestScoringModelSnapshot,
@@ -77,6 +78,7 @@ import {
   listLatestRepoGithubTotalsSnapshots,
   listInstallationHealth,
   listInstallations,
+  listInstalledRepoFullNamesForInstallation,
   listIssues,
   listGateOutcomeAuditEventRollups,
   listIssueSignalSample,
@@ -946,6 +948,13 @@ const maintainerSettingsSchema = z
   })
   .partial();
 
+// #7676 installation-scoped bulk pause/dry-run: the same two per-repo flags maintainerSettingsSchema already
+// validates, picked out on their own so a tenant with many repos under one installation can flip both at once
+// instead of one PUT /v1/repos/:owner/:repo/settings call per repo. Deliberately just these two fields -- not
+// a general bulk settings merge -- and deliberately separate from the global operator kill-switch
+// (getGlobalAgentFrozenState), which stays its own singleton untouched by this.
+const installationBulkAgentSettingsSchema = maintainerSettingsSchema.pick({ agentPaused: true, agentDryRun: true }).strict();
+
 // downgradeQualityGateMode (the settings-write-path "block" -> "advisory" downgrade for
 // qualityGateMode/#2267) was removed here: qualityGateMode is config-as-code only now (Batch C,
 // loopover#6444), so no write path sets it anymore. resolveEffectiveSettings's own downgrade logic
@@ -2713,6 +2722,45 @@ export function createApp() {
     return c.json({ ...(await buildInstallationRepairDiagnostics(c.env, refreshed)), refreshed: true });
   });
 
+  // #7676: a hosted tenant with multiple repos under one installation had no way to pause/dry-run all of
+  // them at once -- only the strictly-per-repo PUT /v1/repos/:owner/:repo/settings existed. Layers on top
+  // of it: applies the same agentPaused/agentDryRun flags across every currently-installed repo in the
+  // installation in one call. Distinct from the global operator kill-switch (getGlobalAgentFrozenState),
+  // which stays a deliberately separate singleton this never touches. Same tenant-vs-tenant isolation as
+  // this route family's siblings above (resolveAppInstallationScope / installationRecordInScope) -- an
+  // operator sees/writes any installation, a non-operator session only their own.
+  app.put("/v1/app/installations/:id/agent/bulk-settings", async (c) => {
+    const resolved = await resolveAppInstallationScope(c);
+    if (resolved instanceof Response) return resolved;
+    const installationId = Number(c.req.param("id"));
+    if (!Number.isFinite(installationId)) return c.json({ error: "invalid_installation_id" }, 400);
+    const installation = await getInstallation(c.env, installationId);
+    if (!installation) return c.json({ error: "installation_not_found" }, 404);
+    if (!installationRecordInScope(resolved.scope, { installationId: installation.id, accountLogin: installation.accountLogin })) {
+      return c.json({ error: "forbidden_installation" }, 403);
+    }
+    const body = await c.req.json().catch(() => null);
+    const parsed = installationBulkAgentSettingsSchema.safeParse(body);
+    if (!parsed.success) return c.json({ error: "invalid_bulk_agent_settings", issues: parsed.error.issues }, 400);
+    const changes = Object.fromEntries(Object.entries(parsed.data).filter(([, value]) => value !== undefined)) as Partial<RepositorySettings>;
+    const repoFullNames = await listInstalledRepoFullNamesForInstallation(c.env, installationId);
+    await Promise.all(
+      repoFullNames.map(async (repoFullName) => {
+        const current = await getRepositorySettings(c.env, repoFullName);
+        await upsertRepositorySettings(c.env, { ...current, ...changes, repoFullName });
+      }),
+    );
+    await recordAuditEvent(c.env, {
+      eventType: "installation.agent_bulk_settings_updated",
+      actor: resolved.identity.actor,
+      targetKey: `installation#${installationId}`,
+      outcome: "completed",
+      detail: `Applied bulk agent settings across ${repoFullNames.length} repo(s).`,
+      metadata: { installationId, repoCount: repoFullNames.length, fields: Object.keys(changes) },
+    });
+    return c.json({ ok: true, installationId, repoCount: repoFullNames.length, repoFullNames, applied: changes });
+  });
+
   app.get("/v1/repos", async (c) => c.json(await listRepositories(c.env)));
 
   app.get("/v1/repos/:owner/:repo", async (c) => {
diff --git a/test/integration/app-installations-selfservice.test.ts b/test/integration/app-installations-selfservice.test.ts
index 2daeee7765..62e110c16c 100644
--- a/test/integration/app-installations-selfservice.test.ts
+++ b/test/integration/app-installations-selfservice.test.ts
@@ -2,7 +2,7 @@ import { generateKeyPairSync } from "node:crypto";
 import { afterEach, describe, expect, it, vi } from "vitest";
 import { createApp } from "../../src/api/routes";
 import { createSessionForGitHubUser } from "../../src/auth/security";
-import { upsertInstallation, upsertInstallationHealth } from "../../src/db/repositories";
+import { getRepositorySettings, upsertInstallation, upsertInstallationHealth, upsertRepositoryFromGitHub, upsertRepositorySettings } from "../../src/db/repositories";
 import type { InstallationHealthRecord } from "../../src/types";
 import { createTestEnv } from "../helpers/d1";
 
@@ -263,6 +263,185 @@ describe("tenant self-service installation health/repair (#7661)", () => {
   });
 });
 
+// #7676: installation-scoped bulk pause/dry-run. Same tenant-vs-tenant isolation as the health/repair siblings
+// above (resolveAppInstallationScope / installationRecordInScope), layered on top of the existing strictly-
+// per-repo PUT /v1/repos/:owner/:repo/settings.
+describe("installation-scoped bulk agent pause/dry-run (#7676)", () => {
+  afterEach(() => {
+    vi.unstubAllGlobals();
+  });
+
+  async function seedInstallation(env: Env, id: number, login: string): Promise<void> {
+    await upsertInstallation(env, {
+      installation: {
+        id,
+        account: { login, id, type: "User" },
+        repository_selection: "selected",
+        permissions: { metadata: "read", pull_requests: "read" },
+        events: ["issues", "pull_request", "repository"],
+      },
+    });
+  }
+
+  async function seedInstalledRepo(env: Env, installationId: number, owner: string, name: string): Promise<void> {
+    await upsertRepositoryFromGitHub(env, { name, full_name: `${owner}/${name}`, private: false, owner: { login: owner } }, installationId);
+  }
+
+  function cookie(token: string): Record<string, string> {
+    return { cookie: `loopover_session=${token}` };
+  }
+
+  function apiHeaders(env: Env): Record<string, string> {
+    return { authorization: `Bearer ${env.LOOPOVER_API_TOKEN}`, "content-type": "application/json" };
+  }
+
+  async function bulkRequest(app: ReturnType<typeof createApp>, env: Env, installationId: number | string, headers: Record<string, string>, body: unknown) {
+    return app.request(
+      `/v1/app/installations/${installationId}/agent/bulk-settings`,
+      { method: "PUT", headers: { "content-type": "application/json", ...headers }, body: JSON.stringify(body) },
+      env,
+    );
+  }
+
+  it("rejects an unauthenticated caller and a session with no maintainer/owner/operator role", async () => {
+    const app = createApp();
+    const env = createTestEnv({ ADMIN_GITHUB_LOGINS: "" });
+    vi.stubGlobal("fetch", async () => new Response("not found", { status: 404 }));
+    await seedInstallation(env, 700, "tenant-a");
+
+    expect((await bulkRequest(app, env, 700, {}, { agentPaused: true })).status).toBe(401);
+
+    const { token } = await createSessionForGitHubUser(env, { login: "nobody", id: 71 });
+    const forbidden = await bulkRequest(app, env, 700, cookie(token), { agentPaused: true });
+    expect(forbidden.status).toBe(403);
+    await expect(forbidden.json()).resolves.toMatchObject({ error: "insufficient_role" });
+  });
+
+  it("rejects a non-numeric installation id, an unknown installation, and a malformed body", async () => {
+    const app = createApp();
+    const env = createTestEnv({ ADMIN_GITHUB_LOGINS: "" });
+    vi.stubGlobal("fetch", async () => new Response("not found", { status: 404 }));
+    await seedInstallation(env, 700, "tenant-a");
+    const { token } = await createSessionForGitHubUser(env, { login: "tenant-a", id: 5701 });
+
+    const invalidId = await bulkRequest(app, env, "not-a-number", cookie(token), { agentPaused: true });
+    expect(invalidId.status).toBe(400);
+    await expect(invalidId.json()).resolves.toMatchObject({ error: "invalid_installation_id" });
+
+    const missing = await bulkRequest(app, env, 999, cookie(token), { agentPaused: true });
+    expect(missing.status).toBe(404);
+    await expect(missing.json()).resolves.toMatchObject({ error: "installation_not_found" });
+
+    const malformed = await bulkRequest(app, env, 700, cookie(token), { agentPaused: "not-a-boolean" });
+    expect(malformed.status).toBe(400);
+    await expect(malformed.json()).resolves.toMatchObject({ error: "invalid_bulk_agent_settings" });
+
+    // An unrecognized field is rejected outright (.strict()), not silently dropped.
+    const extraField = await bulkRequest(app, env, 700, cookie(token), { agentPaused: true, gatePack: "oss-anti-slop" });
+    expect(extraField.status).toBe(400);
+
+    // Genuinely unparseable JSON (not just schema-invalid) -- the .catch(() => null) arm.
+    const unparseable = await app.request(
+      "/v1/app/installations/700/agent/bulk-settings",
+      { method: "PUT", headers: { "content-type": "application/json", ...cookie(token) }, body: "{not valid json" },
+      env,
+    );
+    expect(unparseable.status).toBe(400);
+    await expect(unparseable.json()).resolves.toMatchObject({ error: "invalid_bulk_agent_settings" });
+  });
+
+  it("never lets tenant A bulk-pause tenant B's installation", async () => {
+    const app = createApp();
+    const env = createTestEnv({ ADMIN_GITHUB_LOGINS: "" });
+    vi.stubGlobal("fetch", async () => new Response("not found", { status: 404 }));
+    await seedInstallation(env, 700, "tenant-a");
+    await seedInstallation(env, 800, "tenant-b");
+    await seedInstalledRepo(env, 800, "tenant-b", "repo-1");
+    const { token: tokenA } = await createSessionForGitHubUser(env, { login: "tenant-a", id: 5701 });
+
+    const foreign = await bulkRequest(app, env, 800, cookie(tokenA), { agentPaused: true });
+    expect(foreign.status).toBe(403);
+    await expect(foreign.json()).resolves.toMatchObject({ error: "forbidden_installation" });
+
+    // Confirms the 403 is enforced BEFORE any write: tenant-b's repo settings are completely untouched.
+    expect((await getRepositorySettings(env, "tenant-b/repo-1")).agentPaused).toBe(false);
+  });
+
+  it("applies agentPaused/agentDryRun across every installed repo in the tenant's own installation, and only those repos", async () => {
+    const app = createApp();
+    const env = createTestEnv({ ADMIN_GITHUB_LOGINS: "" });
+    vi.stubGlobal("fetch", async () => new Response("not found", { status: 404 }));
+    await seedInstallation(env, 700, "tenant-a");
+    await seedInstalledRepo(env, 700, "tenant-a", "repo-1");
+    await seedInstalledRepo(env, 700, "tenant-a", "repo-2");
+    // A second, unrelated installation -- proves the bulk write is scoped to installation 700 only.
+    await seedInstallation(env, 800, "tenant-b");
+    await seedInstalledRepo(env, 800, "tenant-b", "repo-3");
+    const { token: tokenA } = await createSessionForGitHubUser(env, { login: "tenant-a", id: 5701 });
+
+    const res = await bulkRequest(app, env, 700, cookie(tokenA), { agentPaused: true, agentDryRun: true });
+    expect(res.status).toBe(200);
+    const body = (await res.json()) as { ok: boolean; installationId: number; repoCount: number; repoFullNames: string[]; applied: object };
+    expect(body).toMatchObject({ ok: true, installationId: 700, repoCount: 2, applied: { agentPaused: true, agentDryRun: true } });
+    expect(body.repoFullNames.sort()).toEqual(["tenant-a/repo-1", "tenant-a/repo-2"]);
+
+    expect((await getRepositorySettings(env, "tenant-a/repo-1")).agentPaused).toBe(true);
+    expect((await getRepositorySettings(env, "tenant-a/repo-1")).agentDryRun).toBe(true);
+    expect((await getRepositorySettings(env, "tenant-a/repo-2")).agentPaused).toBe(true);
+    // The unrelated installation's repo is completely untouched.
+    expect((await getRepositorySettings(env, "tenant-b/repo-3")).agentPaused).toBe(false);
+  });
+
+  it("supports setting only one of the two flags, preserving the other's existing value", async () => {
+    const app = createApp();
+    const env = createTestEnv({ ADMIN_GITHUB_LOGINS: "" });
+    vi.stubGlobal("fetch", async () => new Response("not found", { status: 404 }));
+    await seedInstallation(env, 700, "tenant-a");
+    await seedInstalledRepo(env, 700, "tenant-a", "repo-1");
+    // repo-1 already has agentDryRun on from an earlier per-repo edit, before any bulk call.
+    const current = await getRepositorySettings(env, "tenant-a/repo-1");
+    await upsertRepositorySettings(env, { ...current, agentDryRun: true, repoFullName: "tenant-a/repo-1" });
+    const { token: tokenA } = await createSessionForGitHubUser(env, { login: "tenant-a", id: 5701 });
+
+    const res = await bulkRequest(app, env, 700, cookie(tokenA), { agentPaused: true });
+    expect(res.status).toBe(200);
+
+    const updated = await getRepositorySettings(env, "tenant-a/repo-1");
+    expect(updated.agentPaused).toBe(true);
+    expect(updated.agentDryRun).toBe(true); // untouched -- the omitted field was never overwritten to false
+  });
+
+  it("succeeds as a no-op for an installation with zero currently-installed repos", async () => {
+    const app = createApp();
+    const env = createTestEnv({ ADMIN_GITHUB_LOGINS: "" });
+    vi.stubGlobal("fetch", async () => new Response("not found", { status: 404 }));
+    await seedInstallation(env, 700, "tenant-a");
+    const { token: tokenA } = await createSessionForGitHubUser(env, { login: "tenant-a", id: 5701 });
+
+    const res = await bulkRequest(app, env, 700, cookie(tokenA), { agentPaused: true });
+    expect(res.status).toBe(200);
+    await expect(res.json()).resolves.toMatchObject({ ok: true, repoCount: 0, repoFullNames: [] });
+  });
+
+  it("lets an operator (static api token) bulk-pause any tenant's installation, with a distinct audit event", async () => {
+    const app = createApp();
+    const env = createTestEnv({ ADMIN_GITHUB_LOGINS: "" });
+    vi.stubGlobal("fetch", async () => new Response("not found", { status: 404 }));
+    await seedInstallation(env, 800, "tenant-b");
+    await seedInstalledRepo(env, 800, "tenant-b", "repo-3");
+
+    const res = await bulkRequest(app, env, 800, apiHeaders(env), { agentDryRun: true });
+    expect(res.status).toBe(200);
+    expect((await getRepositorySettings(env, "tenant-b/repo-3")).agentDryRun).toBe(true);
+
+    const events = await env.DB.prepare("SELECT event_type, target_key, actor FROM audit_events WHERE event_type = ?")
+      .bind("installation.agent_bulk_settings_updated")
+      .all<{ event_type: string; target_key: string; actor: string }>();
+    expect(events.results).toHaveLength(1);
+    expect(events.results[0]).toMatchObject({ target_key: "installation#800", actor: "api" });
+  });
+});
+
 function generateRsaPrivateKeyPem(): string {
   const { privateKey } = generateKeyPairSync("rsa", { modulusLength: 2048 });
   return privateKey.export({ type: "pkcs1", format: "pem" }).toString();