Complete FastAPI production system. PROACTIVELY activate for: (1) Project structure (scalable layout), (2) Pydantic schemas (input/output separation), (3) Dependency injection, (4) Async database with SQLAlchemy, (5) JWT authentication, (6) Error handling patterns, (7) Docker deployment, (8) Gunicorn + Uvicorn production, (9) Rate limiting, (10) Testing with httpx. Provides: Project templates, schema patterns, auth setup, Docker config. Ensures production-ready FastAPI applications.
View on GitHubJosiahSiegel/claude-plugin-marketplace
python-master
plugins/python-master/skills/python-fastapi/SKILL.md
February 1, 2026
Select agents to install to:
npx add-skill https://github.com/JosiahSiegel/claude-plugin-marketplace/blob/main/plugins/python-master/skills/python-fastapi/SKILL.md -a claude-code --skill python-fastapiInstallation paths:
.claude/skills/python-fastapi/## Quick Reference | Layer | File | Purpose | |-------|------|---------| | Entrypoint | `main.py` | App factory, lifespan | | Config | `config.py` | pydantic-settings | | Routes | `api/v1/endpoints/` | Endpoint handlers | | Schemas | `schemas/` | Pydantic models | | Models | `models/` | SQLAlchemy models | | Services | `services/` | Business logic | | Deps | `api/deps.py` | Dependency injection | | Pydantic Pattern | Use Case | |------------------|----------| | `UserCreate` | Input for creation | | `UserUpdate` | Input for updates | | `UserResponse` | API output | | `UserInDB` | Internal with hash | | Dependency | Code | |------------|------| | DB session | `db: Annotated[AsyncSession, Depends(get_db)]` | | Current user | `user: Annotated[User, Depends(get_current_user)]` | | Type alias | `CurrentUser = Annotated[User, Depends(...)]` | | Production | Config | |------------|--------| | Server | `gunicorn -w 4 -k uvicorn.workers.UvicornWorker` | | Workers | `CPU cores` for async | ## When to Use This Skill Use for **FastAPI development**: - Setting up FastAPI project structure - Creating Pydantic schemas with validation - Implementing dependency injection - JWT authentication setup - Docker deployment configuration **Related skills:** - For async patterns: see `python-asyncio` - For testing: see `python-testing` - For type hints: see `python-type-hints` --- # FastAPI Production Best Practices (2025) ## Overview FastAPI is a modern, high-performance web framework for building APIs. Built on Starlette and Pydantic, it provides automatic validation, serialization, and OpenAPI documentation. ## Project Structure ### Scalable Structure (Recommended) ``` src/ ├── app/ │ ├── __init__.py │ ├── main.py # Application factory │ ├── config.py # Settings management │ ├── database.py # Database setup │ ├── dependencies.py # Shared dependencies │ ├── api/ │ │ ├── __init__.py │ │ ├── v1/ │ │ │ ├── __init__.