NENE2Python API Framework

FastAPI · Clean Architecture · MCP · mypy --strict · AI-ready from day one.

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Python 3.12+ native

Uses Python 3.12 generic syntax, frozen dataclasses, and Pydantic v2. No legacy shims. mypy --strict enforced on every commit.

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ASGI-native with async handlers and AsyncUseCaseProtocol for non-blocking I/O. asyncio.gather for concurrent repository calls.

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UseCases are exposed as MCP tools via LocalMcpServer — no extra wiring. Claude and any MCP client can call your API directly.

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HTTP Handler → UseCase → RepositoryInterface → SQLAlchemy. Each layer is testable in isolation with InMemory repositories.

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RFC 9457 Problem Details, Bearer + API Key auth, rate limiting, security headers, request size limits — all wired out of the box.

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Swagger UI and ReDoc at /docs — zero config. Export a static openapi.yaml with one command. FastAPI does the work.