api-development

REST API endpoints in FastAPI use route decorators to define paths and HTTP methods, while Pydantic models validate request and response schemas automatically. This Skill generates endpoint routing, request/response validation, and standardized HTTP status codes to reduce boilerplate.

Middleware patterns in FastAPI intercept requests before they reach endpoints, enabling authentication checks and rate limiting at the application level. This Skill implements centralized middleware for authentication, rate limiting, CORS, and error handling across your API.

Dependency injection via FastAPI's Depends() function integrates services and databases into route handlers while maintaining strict typing. This Skill wires up dependency injection patterns so endpoints can inject validated schemas and service instances cleanly.

FastAPI generates OpenAPI documentation automatically from endpoint definitions and Pydantic models, creating interactive API docs at /docs. This Skill ensures correct HTTP status codes and response models so your API documentation stays accurate and complete.

Pydantic v2 models define request and response schemas with field validation, type hints, and automatic serialization. This Skill generates Pydantic-validated request/response schemas that enforce strict typing and standardized response models across all endpoints.