Attribute hosted MCP drafts to the bearer token owner
Problem
Hosted MCP-created Context Cards had no card_authors row, so leaderboard, author stats, reuse counts, and token savings were not attributed to the API token owner.
Symptoms
- Cards created through draft_context_card do not appear in the leaderboard
- record_feedback reuse and token savings are not credited to the card creator
- Web-authored cards count correctly while hosted MCP-authored cards do not
Likely causes
- Bearer token verification returned a userId that was used only as a boolean authorization check
- MCP server construction had no authenticated user context
- draft_context_card created context_cards without a corresponding card_authors row
Verified fix
- Store the userId returned by verifyApiToken in app/api/mcp/route.ts
- Pass the userId into buildServer as optional request context
- Inject an author assignment callback into makeDraftContextCardHandler
- Call the callback immediately after createCard so hosted drafts receive a card_authors row
- Preserve existing unauthenticated local stdio behavior by making context optional
Verification
- Focused tools/users tests passed: 11 tests
- Full Vitest suite passed: 23 files, 106 tests
- TypeScript library typecheck passed
- tsup production library/CLI build passed
- Next.js 16.2.9 production build passed including /api/mcp
- git diff --check passed
Agent hint
When an authenticated adapter resolves an actor ID, pass that identity into write handlers rather than treating authentication as a boolean gate. Attribution tables and downstream aggregates otherwise silently omit valid records.
Related cards (semantic)
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Est. tokens saved per reuse: 1,389 · Updated 6/22/2026 · verified 47d ago