fix(gmail-auth): request explicit filter settings scope

README.md

@@ -1154,7 +1154,7 @@ Supported delivery modes:
 1. Create a Google Cloud project with the Gmail API enabled
 2. Create OAuth2 credentials (Desktop application type) and download the JSON file
 3. Run `flynn gmail-auth` to complete the OAuth2 flow and store the refresh token
-   - Requests full Gmail access scope (`https://mail.google.com/`) so all filter operations are allowed
+   - Requests Gmail scopes for settings + read access (`gmail.settings.basic` + `gmail.readonly`)
 
 For Pub/Sub delivery (push/pull), also enable the Pub/Sub API and create:
 - A topic (e.g. `projects/your-project/topics/gmail-push`)

config/default.yaml

@@ -452,7 +452,7 @@ memory:
 #     credentials_file: ~/.config/flynn/gmail-credentials.json
 #     token_file: ~/.config/flynn/gmail-token.json
 #     # Authenticate with: flynn gmail-auth
-#     # (requests full Gmail scope https://mail.google.com/ for complete Gmail filter permissions)
+#     # (requests gmail.settings.basic + gmail.readonly for filter create + inbox tools)
 #
 #     # Optional Pub/Sub delivery
 #     # Push mode: configure a topic and a push subscription that POSTs to /gmail/push

docs/plans/state.json

@@ -3,6 +3,20 @@
   "updated_at": "2026-02-23",
   "description": "Tracks the status of all Flynn plans and implementation phases",
   "plans": {
+    "gmail-filter-scope-correction": {
+      "status": "completed",
+      "date": "2026-02-23",
+      "updated": "2026-02-23",
+      "summary": "Corrected Gmail OAuth scopes for filter creation after validating that `mail.google.com` alone still produced `ACCESS_TOKEN_SCOPE_INSUFFICIENT` for `users.settings.filters.create` in live checks. `flynn gmail-auth` now explicitly requests `gmail.settings.basic` (plus `gmail.readonly`). Updated auth tests and operator docs/comments.",
+      "files_modified": [
+        "src/cli/gmail-auth.ts",
+        "src/cli/gmail-auth.test.ts",
+        "README.md",
+        "config/default.yaml",
+        "docs/plans/state.json"
+      ],
+      "test_status": "pnpm test:run src/cli/gmail-auth.test.ts + pnpm typecheck passing"
+    },
     "minimal-tui-multiline-paste-mode": {
       "status": "completed",
       "date": "2026-02-23",
@@ -6345,7 +6359,7 @@
     "operator_dx_milestone": "Phase 3 (Live Ops Dashboard): 2/2 plans complete — milestone done",
     "dashboard_observability": "completed — service health graphs + core service log viewer added to web UI via observability RPCs and bounded backend sampling",
     "gmail_auth_cli": "flynn gmail-auth command implemented with OAuth2 flow, doctor check, config routed to Telegram",
-    "gmail_filter_creation": "completed — gmail.filter.create tool added with criteria/action validation; gmail-auth now requests full Gmail scope (https://mail.google.com/) for complete filter permissions",
+    "gmail_filter_creation": "completed — gmail.filter.create tool added with criteria/action validation; gmail-auth requests explicit gmail.settings.basic + gmail.readonly scopes for filter creation and inbox reads",
     "toolloop_action_intent_recovery": "completed — when a model claims it will execute a tool but emits no tool call, NativeAgent now issues one internal nudge and continues the same turn to execute tools or produce a concrete blocker",
     "toolloop_execution_claim_recovery": "completed — when a model claims a known tool already succeeded/failed without emitting a tool call, NativeAgent now nudges once and retries the same turn before returning text",
     "minimal_tui_multiline_paste_mode": "completed — minimal TUI now supports `/paste`/`/multiline` multiline compose mode ending with single '.' line, preventing newline truncation for pasted prompts",

src/cli/gmail-auth.test.ts

@@ -71,7 +71,8 @@ describe('gmail-auth', () => {
       expect(url).toContain('https://accounts.google.com/o/oauth2/v2/auth');
       expect(url).toContain('client_id=my-client-id');
       expect(url).toContain('redirect_uri=http%3A%2F%2Flocalhost%3A3000');
-      expect(url).toContain('scope=https%3A%2F%2Fmail.google.com%2F');
+      expect(url).toContain('scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fgmail.settings.basic');
+      expect(url).toContain('https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fgmail.readonly');
       expect(url).toContain('access_type=offline');
       expect(url).toContain('prompt=consent');
     });

src/cli/gmail-auth.ts

@@ -7,8 +7,10 @@ import { URL } from 'url';
 import { loadConfigSafe } from './shared.js';
 
 const SCOPES = [
-  // Full Gmail access (includes all filter operations and settings APIs).
+  // Explicitly request Gmail settings scope required by filters.create.
-  'https://mail.google.com/',
+  'https://www.googleapis.com/auth/gmail.settings.basic',
+  // Keep readonly mailbox access for list/search/read tooling.
+  'https://www.googleapis.com/auth/gmail.readonly',
 ];
 const REDIRECT_PORT = 3000;
 const REDIRECT_URI = `http://localhost:${REDIRECT_PORT}`;