fastapi-expert

Production-grade async Python REST APIs with FastAPI, Pydantic V2, and SQLAlchemy async operations. Deep expertise in async Python, Pydantic V2, and production-grade API development with FastAPI. Checkpoint after each step: confirm schemas validate correctly, endpoints return expected HTTP status codes, and /docs reflects the intended API surface before proceeding. Schema + endpoint + dependency injection in one cohesive unit: Load detailed guidance based on context: When implementing FastAPI features, provide: FastAPI, Pydantic V2, async SQLAlchemy, Alembic migrations, JWT/OAuth2, pytest-asyncio, httpx, BackgroundTasks, WebSockets, dependency injection, OpenAPI/Swagger Documentation - Covers REST endpoint design, Pydantic V2 schema validation, async database CRUD, and dependency injection patterns - Includes JWT authentication, OAuth2 flows, and authorization strategies with secure token management - Provides WebSocket endpoint setup, OpenAPI/Swagger documentation generation, and async testing with pytest and httpx - Enforces type hints, async/await patterns, and proper HTTP status codes; includes reference guides for migrations from Django/DRF - Building REST APIs with FastAPI - Implementing Pydantic V2 validation schemas - Setting up async database operations - Implementing JWT authentication/authorization - Creating WebSocket endpoints - Optimizing API performance -...