skills.rest
nimadorostkar
nimadorostkarCOMMUNITY
Explore all skills by this author →
WebsiteGitHub

fastapi

Standardize FastAPI development with async I/O and dependency injection.

25|3|Updated Jul 14, 2026
Search Tags:#api#pydantic#fastapi#python#backend#async
One-click install
npx skills add https://github.com/nimadorostkar/Claude-Skills-collection --skill fastapi-nimadorostkar
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: fastapi
Source: https://github.com/nimadorostkar/Claude-Skills-collection/tree/main/skills/backend/fastapi
Command: npx skills add https://github.com/nimadorostkar/Claude-Skills-collection --skill fastapi-nimadorostkar

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill addresses common pitfalls in FastAPI development, such as blocking the event loop with synchronous I/O, leaking internal ORM models, and failing to properly structure dependency injection for testability.

Core Features & Use Cases

  • Architectural Guidance: Enforces a clean separation between route handlers, service logic, and data models.
  • Performance Optimization: Provides patterns for handling I/O-bound tasks asynchronously to prevent event loop stalls.
  • Testing Strategy: Demonstrates how to use dependency overrides with httpx.AsyncClient for reliable, isolated integration testing.

Quick Start

Use the fastapi skill to review my current route handlers and suggest improvements for dependency injection and async database session management.

Frequently Asked Questions about fastapi

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I prevent blocking the async event loop in FastAPI?▼

Prevent FastAPI event loop blocking by enforcing asynchronous I/O patterns for I/O-bound tasks. This ensures non-blocking execution and prevents performance stalls in your RESTful APIs.

What is the best way to structure FastAPI dependency injection for testing?▼

Structure FastAPI dependency injection for testing using dependency overrides with httpx.AsyncClient. This achieves reliable, isolated integration testing by properly scoping database sessions.

How do I separate route handlers from service logic in a Python backend?▼

Separate Python backend route handlers from service logic by enforcing clean architectural boundaries between routes, service-layer business logic, and data models for scalable RESTful API construction.

Do I need Pydantic v2 validation schemas for FastAPI?▼

FastAPI requires Pydantic v2 validation schemas to ensure thread-safe execution and prevent leaking internal ORM models into API routes. Adhering to these schemas standardizes data validation.

Why does my FastAPI application leak internal ORM models?▼

FastAPI applications leak internal ORM models when route handlers directly return ORM instances. Enforcing clean separation between route handlers, service logic, and Pydantic data models prevents this exposure.

Related Skills

Explore More Software Engineering Skills→
JeffallanJeffallan
10.9k

fastapi-expert

Build async Python APIs with FastAPI, Pydantic V2, and JWT authentication.

Community
Advanced
ai-enhanced-engineerai-enhanced-engineer
3

pytest-fastapi-async

Test FastAPI services with pytest-asyncio and httpx.

Official
Intermediate
MadAppGangMadAppGang
7

bunjs

Develop TypeScript backend services with Bun, Hono, Prisma, and Zod.

Official
Advanced
JonathanMitchell1234JonathanMitchell1234

fastapi-expert

Develop FastAPI Python APIs with Pydantic validation and SQLAlchemy integration.

Community
Advanced