FastAPI Developer
Implements high-performance FastAPI services and Pydantic models using modern best practices and the latest framework features.
The FastAPI skill enables Claude to build, refactor, and maintain production-grade backend services with a focus on type safety and performance. It enforces modern Python standards such as the Annotated type hint for dependencies, ensures optimal response serialization through Pydantic's Rust-based engine, and provides critical guidance on managing asynchronous vs. synchronous execution. By following these standardized patterns, the skill helps developers create clean, self-documenting APIs that integrate seamlessly with the FastAPI CLI and ecosystem tools like SQLModel and HTTPX.
Key Features
01Optimizes API performance by utilizing return type hints for Rust-based Pydantic serialization.
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03Provides automated guidance on selecting between async and sync path operations to prevent blocking.
04Enforces the use of Annotated for clean, reusable dependency injection and parameter declarations.
05Ensures compatibility with the FastAPI CLI for modern development and production workflows.
06Standardizes API architecture through router-level configuration and single-responsibility functions.
Use Cases
01Refactoring legacy FastAPI codebases to adopt Pydantic v2 patterns and modern type hinting.
02Building high-performance REST APIs with automatic OpenAPI documentation and strict validation.
03Designing modular backend architectures with reusable dependency providers and clean routing.