Enables Braintrust tracing for AI Assistant chats to support debugging
and future online evals.
**Code Changes**
- Wraps `generateAssistantResponse` in a Braintrust `traced()` span,
logging the user's latest message as input along with metadata
(`chatId`, `chatName`, `projectRef`, `userId`, `orgId`, `planId`, etc.)
- Threads JWT claims from `apiWrapper` → handler to log `userId` in
Braintrust without an extra API call (+ expanded `apiWrapper` tests)
- Threads `orgId` and `planId` from `getOrgAIDetails` to log in
Braintrust
**Infrastructure Changes**
- Created a "Vercel" service account in Braintrust
- Added `BRAINTRUST_API_KEY` and `BRAINTRUST_PROJECT_ID` env vars to the
studio-staging project in Vercel using a service token for the above
service account
- Added an "Overview" view to the Logs tab in the Braintrust Assistant
project to surface the new metadata
**Precautions**
- HIPAA sensitive projects are excluded from logging (see
https://github.com/supabase/supabase/pull/42787 for the detection logic)
- Production is temporarily excluded from logging until we're confident
in the setup
**Testing steps**
- Chat with the AI Assistant in the [studio-staging preview
build](https://github.com/supabase/supabase/pull/42963#issuecomment-3917178023)
below
- Visit the [Logs tab in the Braintrust Assistant
project](https://www.braintrust.dev/app/supabase.io/p/Assistant/logs)
and inspect the trace
<img width="4680" height="962" alt="CleanShot 2026-02-18 at 17 43 55@2x"
src="https://github.com/user-attachments/assets/c3a11b21-4e7f-4e90-bdab-a25ab8ee0d1f"
/>
<img width="2632" height="1288" alt="CleanShot 2026-02-18 at 17 45
04@2x"
src="https://github.com/user-attachments/assets/6c7b6ebc-5090-4ede-8f71-859ff7e386aa"
/>
**References**
- https://www.braintrust.dev/docs/integrations/sdk-integrations/vercel
- https://www.braintrust.dev/docs/instrument/custom-tracing
Closes AI-438
Use getClaims instead of getUser which avoids a network call to GoTrue to validate the user in case of asymmetric keys - this shaves off a good amount of latency for every API call.
Charis