diff --git a/packages/loopover-mcp/bin/loopover-mcp.js b/packages/loopover-mcp/bin/loopover-mcp.js
index f6dfe12118..5fef9a0794 100755
--- a/packages/loopover-mcp/bin/loopover-mcp.js
+++ b/packages/loopover-mcp/bin/loopover-mcp.js
@@ -2603,6 +2603,7 @@ function printHelp() {
   LOOPOVER_PROFILE
   LOOPOVER_CONFIG_PATH or LOOPOVER_CONFIG_DIR
   LOOPOVER_API_TOKEN, LOOPOVER_MCP_TOKEN, LOOPOVER_TOKEN, or a session from loopover-mcp login
+  LOOPOVER_LOGIN or GITHUB_LOGIN (default --login for analyze-branch, preflight, review-pr, decision-pack, repo-decision, and agent plan/packet)
   GITHUB_TOKEN for non-interactive login bootstrap
   GITTENSOR_SCORE_PREVIEW_CMD
   GITTENSOR_ROOT
diff --git a/test/unit/mcp-cli-tools.test.ts b/test/unit/mcp-cli-tools.test.ts
index 85431ac4f2..cf253f5132 100644
--- a/test/unit/mcp-cli-tools.test.ts
+++ b/test/unit/mcp-cli-tools.test.ts
@@ -74,4 +74,11 @@ describe("loopover-mcp CLI — tools", () => {
       expect(tool.description.trim().length).toBeGreaterThan(0);
     }
   });
+
+  it("documents LOOPOVER_LOGIN / GITHUB_LOGIN in the --help Environment block (#5930)", () => {
+    const help = run(["--help"]);
+    expect(help).toContain("Environment:");
+    // Six subcommands resolve the login from LOOPOVER_LOGIN (then GITHUB_LOGIN); help must list it.
+    expect(help).toMatch(/LOOPOVER_LOGIN or GITHUB_LOGIN/);
+  });
 });