FastAPI Endpoint Validation

Enforces FastAPI endpoint best practices with Pydantic validation in Python projects. Auto-activates on: fastapi, endpoint, route, pydantic, validation, request, response. Prevents missing validation (raw dict), inconsistent responses, unhandled exceptions, missing status codes. Ensures Pydantic models for requests/responses, dependency injection, HTTPException usage, async/await patterns. Validates model inheritance (BaseModel), status codes (201, 400, 404, 500), OpenAPI docs. Targets: 100% validated endpoints, 0 raw dicts, <50ms validation overhead.