fastapi-pro

Builds async FastAPI services with SQLAlchemy 2.0, Pydantic V2, and WebSockets.

Updated Apr 9, 2026
One-click install
npx skills add https://github.com/5onyy/essential-ai-agent-skills --skill fastapi-pro-5onyy
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: fastapi-pro
Source: https://github.com/5onyy/essential-ai-agent-skills/tree/main/.cursor/skills/fastapi-pro
Command: npx skills add https://github.com/5onyy/essential-ai-agent-skills --skill fastapi-pro-5onyy

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Building production-grade async Python APIs requires coordinating many moving parts—Pydantic validation, SQLAlchemy 2.0 async sessions, authentication, testing, and deployment. This Skill provides expert guidance for designing, implementing, and scaling FastAPI applications without missing critical patterns. ## Core Features & Use Cases - Async API Development: Implements endpoints with async/await, Pydantic V2 validation, dependency injection, and automatic OpenAPI documentation. - Data & Security Layers: Configures SQLAlchemy 2.0 with async drivers, Alembic migrations, Redis caching, and OAuth2/JWT authentication with RBAC. - Testing & Deployment: Covers pytest-asyncio testing, Docker containerization, Kubernetes deployment, and observability with OpenTelemetry and Prometheus. - Use Case: Ask it to create a FastAPI microservice with async SQLAlchemy, JWT refresh tokens, Redis caching, and a Docker setup, and receive a complete project structure with tests. ## Quick Start Ask the agent to create a FastAPI microservice with async SQLAlchemy, JWT authentication, and Docker deployment configuration.

Frequently Asked Questions about fastapi-pro

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

FAQPage Schema
How do I build an async API with FastAPI and SQLAlchemy 2.0?▼

Define Pydantic V2 models for request and response contracts, then create async endpoints using SQLAlchemy 2.0's async session with drivers like asyncpg. Use dependency injection for session management and add eager loading to prevent N+1 query problems.

How to implement JWT authentication in FastAPI?▼

Use python-jose or pyjwt to issue and verify JWT access and refresh tokens via OAuth2 password flow. Protect routes with FastAPI's dependency injection, and layer role-based access control on top for permission checks.

Does FastAPI support WebSockets and real-time communication?▼

Yes, FastAPI natively supports WebSockets for bidirectional real-time communication, plus Server-Sent Events for streaming. These work alongside REST endpoints and can integrate with Redis Pub/Sub for scaling across instances.

How do I test async FastAPI endpoints with pytest?▼

Use pytest-asyncio with FastAPI's TestClient for integration tests of async endpoints. Combine factory_boy or Faker for test data, pytest-mock for external services, and pytest-cov for coverage analysis.

Why is my FastAPI endpoint slow under load?▼

Common causes include blocking synchronous calls inside async handlers, missing database connection pooling, and N+1 queries. Fix these with async libraries, connection pooling, eager loading, Redis caching, and response compression.