fastapi

FastAPI — modern async Python web framework on Starlette + Pydantic v2 with auto-generated OpenAPI 3.1. Use when: fastapi, fast api, FastAPI, async python api, python rest api, pydantic-backed api, async/await python web, path operation, APIRouter, include_router, Depends, sub-dependencies, dependencies with yield, BaseModel response, response_model, OAuth2PasswordBearer, OAuth2PasswordRequestForm, SecurityScopes, JWT python-jose PyJWT, passlib bcrypt argon2, CORSMiddleware, TrustedHostMiddleware, GZipMiddleware, lifespan asynccontextmanager, BackgroundTasks, StreamingResponse, EventSourceResponse, WebSocket, TestClient, AsyncClient httpx, dependency_overrides, uvicorn, gunicorn UvicornWorker, openapi auto-doc, Swagger UI, ReDoc. SKIP: Django (→django cascade), Flask (→flask cascade), Node frameworks (→fastify/hono), pure Pydantic schemas (→pydantic), SQLAlchemy ORM specifics (→sqlalchemy cascade).

Works with

Claude CodeCursorCodex CLIGitHub CopilotGemini CLI

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