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DottaandPaperclip
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## Thinking Path > - Paperclip is the open source app people use to manage AI agents for work. > - Agents use external MCP tools through the governed gateway. > - Remote MCP connections can use OAuth access tokens that expire. > - Some providers issue refresh tokens only after an offline-access request and consent. > - Resource scopes hid that identity-provider capability in the generic connection flow. > - This pull request requests supported offline access and tests expiry through a local MCP server. > - The benefit is continued tool access without another sign-in when the provider permits refresh. ## Linked Issues or Issue Description Related PR: #13447 addresses the same OAuth symptom together with managed Codex configuration. This PR focuses on generic MCP OAuth. It also covers consent, explicit scope overrides, legacy reconnects, exact scope persistence, and real HTTP expiry tests. **What happened?** A generic MCP resource can advertise only its tool scopes. Its OAuth server can separately advertise `offline_access`. Paperclip selected the resource scopes and omitted the offline-access request. A provider could then issue an access token without a refresh token. Tool access stopped after the access token expired. **Expected behavior** Paperclip adds advertised offline access to the selected tool scopes when the OAuth server does not exclude refresh tokens. It requests consent and stores the scopes sent in the authorization request. Existing connections can discover this capability when the user reconnects. Providers without this capability keep their existing scope behavior. **Steps to reproduce** 1. Run `node scripts/mcp-fixtures/servers/oauth-refresh-fixture.mjs` from the repository root. 2. Add its MCP URL as a generic connection on a local Paperclip instance. 3. Approve the test consent page and call `read_status`. 4. Let the two-minute access token expire and call the tool again. 5. Before this fix, the connection needs another sign-in. With this fix, the call refreshes the token and succeeds. **Paperclip version or commit** The integration regression reproduced the missing-refresh-token failure on the parent of this PR's fix. The same test passes with the fix. **Deployment mode** Local development. Automated tests use a loopback HTTP MCP/OAuth server and a disposable PostgreSQL database. ## What Changed - Track offline-access capability separately from MCP tool scopes. - Add supported offline access and consent for generic connections. - Preserve the actual requested scopes through callback completion and reconnect. - Discover the capability for older connections with cached OAuth endpoints. - Add a reusable MCP/OAuth fixture with PKCE, token expiry, resource binding, and refresh-token rotation. - Test shared and personal gateway calls through two refresh rotations. Cover scope selection, unsupported refresh, and legacy reconnects. - Document the behavior and local test commands. ## Verification - The two real HTTP expiry tests failed before the fix with `oauth_refresh_missing` after the first token expired. - Tests passed on the current head: 76 generic MCP regressions, all 365 tool-access service tests, and 4 fixture controls. - Full workspace `pnpm -r typecheck` and `pnpm build` passed. Server TypeScript checks also passed after the review fixes. - All remote checks passed on `d22909bb34e9d54478c0002077c498ffe105932d`. Greptile gave 5/5 with both previous findings resolved. The complete local `pnpm test:run` is still running. - Run `node --test scripts/mcp-fixtures/servers/oauth-refresh-fixture.test.mjs` for the standalone provider controls. - Run `pnpm exec vitest run server/src/__tests__/generic-mcp-connection.test.ts` for the Paperclip integration tests. ## Risks - Users can see a consent prompt when a generic provider supports offline access. - The provider can still decline to issue a refresh token. Access works until expiry, then the user must reconnect. - A provider that advertises offline access but rejects the scope produces an OAuth error. This PR does not add an automatic retry without that scope. - Existing grants without refresh tokens need another sign-in. The fix does not change them in place. - Curated Apps keep their reviewed scope and authorization-parameter allowlists. No database migration is required. - This simulation verifies the suspected failure. The reported internal MCP server has not been tested. ## Model Used - OpenAI Codex, based on GPT-6, with reasoning, tool use, and code execution. The runtime did not expose a more specific model ID or context-window size. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have searched GitHub for duplicate or related PRs and linked them above - [x] I have either (a) linked existing issues with `Fixes: #` / `Closes #` / `Refs #` OR (b) described the issue in-PR following the relevant issue template - [x] I have not referenced internal/instance-local Paperclip issues or links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip` URLs) - [x] My branch name describes the change (e.g. `docs/...`, `fix/...`) and contains no internal Paperclip ticket id or instance-derived details - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] All Paperclip CI gates are green - [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups - [x] I will address all Greptile and reviewer comments before requesting merge --------- Co-authored-by: Paperclip <noreply@paperclip.ing>