FastAPI

Official docs

Agent rules

1. Pydantic v2 — model_validate, Field, typed responses; match existing schema style.
2. Async when I/O bound — async def for DB/HTTP; don't block event loop with sync CPU work.
3. Dependency injection — reuse Depends() patterns from repo for auth and DB sessions.
4. OpenAPI — route response models explicit; don't break /docs contract silently.
5. Context7 — verify FastAPI/Pydantic syntax; training data drifts on v2 migration.

Common tasks