starlette
Build async web applications and APIs with Starlette 1.0, the lightweight ASGI framework for Python. Use this skill whenever a user wants to create an async Python web app, REST API, WebSocket server, or ASGI application using Starlette. Triggers include mentions of 'Starlette', 'ASGI', async Python web frameworks, or requests to build lightweight async APIs, WebSocket services, streaming responses, or middleware pipelines. Also use when the user is working with FastAPI internals (which is built on Starlette), needs ASGI middleware patterns, or wants a minimal async web server without a full framework. Covers routing, requests/responses, WebSockets, middleware, templates, static files, authentication, lifespan, background tasks, config, testing, schemas, and more.
Install
git clone https://github.com/simonw/research /tmp/research && ln -s /tmp/research/starlette-1-skill ~/.claude/skills/starletteFrom README
Starlette 1.0 Starlette is a lightweight ASGI framework/toolkit for building high-performance async web services in Python. Version 1.0 was released on March 22, 2026 — the first stable release after nearly eight years of development. It requires Python 3.10+ and depends only on anyio. It is the foundation for FastAPI and the Python MCP SDK. --- 1 · Application The Starlette class ties together routing, middleware, exception handling, and lifespan.