fastapi-pro

Design FastAPI endpoints with explicit request and response models, stable HTTP error mapping, and clear REST contracts. This Skill reviews routes, status codes, and error handling for production readiness.

Implement async-safe authentication and dependency injection in FastAPI using explicit contracts and async-first I/O patterns. This Skill guides production implementation with lifespan resources and stable authorization verification.

Pydantic models and OpenAPI contracts in FastAPI require explicit validation schemas and stable HTTP error mapping. This Skill reviews API contracts and verifies OpenAPI output accuracy for production services.

FastAPI async I/O operations block the event loop when synchronous database calls or improper transaction scopes occur. This Skill diagnoses blocking operations and performance bottlenecks in async-first request lifecycle handling.

The best way to structure FastAPI request lifecycle handling and error mapping is through explicit contracts, async-safe resource management, and stable HTTP error mapping. This Skill shapes routes and verifies error handling through tests and OpenAPI output.

FastAPI supports SQLAlchemy sessions and async I/O for production services through async-safe resource management and explicit persistence boundaries. This Skill implements database session handling and reviews transaction scope for production readiness.