Structure FastAPI applications with routers, dependency injection, and JWT authentication.
npx skills add https://github.com/kid-sid/claude-spellbook --skill fastapi-kid-sid
Please help me install this Agent Skill. Skill: fastapi Source: https://github.com/kid-sid/claude-spellbook/tree/main/skills/fastapi Command: npx skills add https://github.com/kid-sid/claude-spellbook --skill fastapi-kid-sid
Establishes scalable, maintainable FastAPI projects by documenting best practices for app structure, dependency injection, schemas, authentication, and testing.
Scaffold a FastAPI project using this guide to implement routers, dependency injection, and authentication.
High-intent search queries and answers about installing and using this skill.
To structure a FastAPI application, use an app factory pattern with lifespan management to initialize singletons, then organize endpoints into modular routers with layered dependencies for maintainable separation of concerns.
FastAPI dependency injection uses callable functions or classes that provide resources like database sessions, allowing routers to declare dependencies explicitly and automatically closing resources via lifespan management.
The best way to implement JWT authentication in FastAPI involves using OAuth2 password flow with Pydantic v2 schemas to validate tokens, applying middleware to protect routes and handle authentication errors consistently.
Yes, you can use Pydantic v2 models to define type-safe request and response schemas across API boundaries, ensuring automatic validation and serialization for incoming and outgoing data payloads.
Set up FastAPI testing scaffolds by creating route tests that use the dependency injection system to override real database connections, enabling CI-friendly workflows that validate endpoints in isolation.
FastAPI supports WebSockets and background tasks within a modular app structure by organizing them into dedicated routers and dependencies, ensuring asynchronous operations remain maintainable across multiple modules.
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