fastapi-async-patterns
Provides best practices and code patterns for high-performance, non-blocking FastAPI endpoints.
Install
mkdir -p .claude/skills/fastapi-async-patterns && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/15252" && unzip -o skill.zip -d .claude/skills/fastapi-async-patterns && rm skill.zipInstalls to .claude/skills/fastapi-async-patterns
Activation
This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.
Use for deep FastAPI concurrency, event-loop safety, async I/O, and performance patterns after a service structure already exists. Not a general FastAPI bootstrap skill; pair with fastapi-expert or fastapi-templates when needed.Key capabilities
- →Implement async route handlers for non-blocking I/O
- →Perform async database operations with SQLAlchemy, asyncpg, Motor, or Tortoise ORM
- →Handle CPU-bound work in synchronous endpoints
- →Execute background tasks without blocking the response
- →Stream large data using `StreamingResponse`
How it works
This skill provides patterns for FastAPI concurrency, event-loop safety, and async I/O. It demonstrates how to implement async route handlers, database operations, and background tasks to build high-performance APIs. It explains how to avoid blocking the event loop.
Inputs & outputs
When to use fastapi-async-patterns
- →Improve API performance
- →Implement async database queries
- →Refactor blocking endpoints
- →Optimize concurrency
About fastapi-async-patterns
This skill offers patterns for async route handlers and database operations in FastAPI. It explains how to avoid blocking the event loop and optimize concurrent I/O-bound tasks.
Use for deep FastAPI concurrency, event-loop safety, async I/O, and performance patterns after a service structure already exists. Not a general FastAPI bootstrap skill; pair with fastapi-expert or fastapi-templates when needed.
When not to use it
- →When a general FastAPI bootstrap skill is needed
- →When using synchronous I/O in async functions
- →When forgetting `await` on async functions
Limitations
- →All connection strings and secrets in these examples must come from environment variables or a secret manager
- →Never use blocking calls in async functions (time.sleep, requests library)
- →Set timeouts on all external calls to prevent hanging
How it compares
This skill offers specialized guidance for optimizing FastAPI performance through advanced async patterns, providing a more efficient and scalable solution than basic synchronous implementations.
Compared to similar skills
fastapi-async-patterns side by side with the closest alternatives in the catalog.
| Skill | Installs | Updated | Safety | Difficulty |
|---|---|---|---|---|
| fastapi-async-patterns (this skill) | 0 | 3mo | No flags | Advanced |
| runtime-skills | 1 | 8mo | No flags | Advanced |
| fastapi-templates | 520 | 4mo | No flags | Intermediate |
| fastapi-pro | 79 | 5mo | No flags | Advanced |
Try saying
Example prompts that trigger this skill in your AI assistant.
You might also like
runtime-skills
llama-farm
Universal Runtime best practices for PyTorch inference, Transformers models, and FastAPI serving. Covers device management, model loading, memory optimization, and performance tuning.
fastapi-templates
wshobson
Create production-ready FastAPI projects with async patterns, dependency injection, and comprehensive error handling. Use when building new FastAPI applications or setting up backend API projects.
fastapi-pro
sickn33
Build high-performance async APIs with FastAPI, SQLAlchemy 2.0, and Pydantic V2. Master microservices, WebSockets, and modern Python async patterns. Use PROACTIVELY for FastAPI development, async optimization, or API architecture.
python-pro
sickn33
Master Python 3.12+ with modern features, async programming, performance optimization, and production-ready practices. Expert in the latest Python ecosystem including uv, ruff, pydantic, and FastAPI. Use PROACTIVELY for Python development, optimization, or advanced Python patterns.
python-configuration
wshobson
Python configuration management via environment variables and typed settings. Use when externalizing config, setting up pydantic-settings, managing secrets, or implementing environment-specific behavior.
fastapi-router-py
microsoft
Create FastAPI routers with CRUD operations, authentication dependencies, and proper response models. Use when building REST API endpoints, creating new routes, implementing CRUD operations, or adding authenticated endpoints in FastAPI applications.