FastAPI

Health v2 · maintenance only

Adoption not part of the score

103093 stars · 10038 forks observed · 2026-10-14

What it is AI-extracted, prompt v1, taxonomy v1, 2026-09-21, confidence 0.99

FastAPI is a modern, high‑performance Python web framework for building APIs with standard type hints. It provides automatic OpenAPI documentation, async support, and tight integration with Starlette and Pydantic.

Use cases

• create a RESTful API with automatic Swagger UI documentation
• build async micro‑services in Python
• expose machine‑learning models as HTTP endpoints
• rapidly prototype CRUD applications with data validation
• develop production‑ready backend services with type‑safe request handling

When to choose

• you need high performance comparable to Node.js or Go
• you want automatic OpenAPI/JSON Schema generation and interactive docs
• your project relies heavily on Python type hints for validation
• you prefer async‑first design with easy integration of background tasks

When to avoid

• you are constrained to a synchronous-only environment
• you need a full‑stack solution with built‑in templating and frontend tooling
• your team prefers a different language or framework ecosystem

Facets

framework · maturity active

api-framework http-server web-framework routing serialization form-handling web-development backend data-science python cross-platform cli async starlette pydantic openapi swagger-ui redoc

Member repositories

For agents

markdown · JSON · MCP: product_card(name="fastapi/fastapi")