fastapi-patterns

SKILL.md

Middleware executes in LIFO (Last In, First Out) order. The last middleware added is the outermost layer.

Use only for middleware that needs to read/modify the request body or response:

FastAPI caches dependency results within a single request. The same dependency called multiple times returns the same instance:

FastAPI framework mechanics and advanced patterns. Use when configuring middleware, creating dependency injection chains, implementing WebSocket endpoints, customizing OpenAPI documentation, setting up CORS, building authentication dependencies (JWT validation, role-based access), implementing background tasks, or managing application lifespan (startup/shutdown). Does NOT cover basic endpoint CRUD or repository/service patterns (use python-backend-expert) or testing (use pytest-patterns). Source: hieutrtr/ai1-skills.

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