# H3

> H(TTP) server framework built on top of web standards for high performance and composability.

## Documentation Sets

- [H3](https://h3.dev/llms-full.txt): H(TTP) server framework built on top of web standards for high performance and composability.

## Content

- [Getting Started](https://h3.dev/raw/guide.md): Get started with H3.
- [Request Lifecycle](https://h3.dev/raw/guide/basics/lifecycle.md): H3 dispatches incoming web requests to final web responses.
- [Routing](https://h3.dev/raw/guide/basics/routing.md): Each request is matched to one (most specific) route handler.
- [Middleware](https://h3.dev/raw/guide/basics/middleware.md): Intercept request, response and errors using H3 middleware.
- [Event Handlers](https://h3.dev/raw/guide/basics/handler.md): An event handler is a function that receives an H3Event and returns a response.
- [Sending Response](https://h3.dev/raw/guide/basics/response.md): H3 automatically converts any returned value into a web response.
- [Error Handling](https://h3.dev/raw/guide/basics/error.md): Send errors by throwing an HTTPError.
- [Nested Apps](https://h3.dev/raw/guide/basics/nested-apps.md): H3 has a native mount method for adding nested sub-apps to the main instance.
- [H3](https://h3.dev/raw/guide/api/h3.md): H3 class is the core of server.
- [H3Event](https://h3.dev/raw/guide/api/h3event.md): H3Event, carries incoming request, prepared response and context.
- [Plugins](https://h3.dev/raw/guide/advanced/plugins.md): H3 plugins allow you to extend an H3 app instance with reusable logic.
- [WebSockets](https://h3.dev/raw/guide/advanced/websocket.md): H3 has built-in utilities for cross platform WebSocket and Server-Sent Events.
- [Nightly Builds](https://h3.dev/raw/guide/advanced/nightly.md)
- [Utils](https://h3.dev/raw/utils.md)
- [Request](https://h3.dev/raw/utils/request.md): H3 request utilities.
- [Response](https://h3.dev/raw/utils/response.md): H3 response utilities.
- [Cookie](https://h3.dev/raw/utils/cookie.md): H3 cookie utilities.
- [Security](https://h3.dev/raw/utils/security.md): H3 security utilities.
- [Proxy](https://h3.dev/raw/utils/proxy.md): H3 proxy utilities.
- [MCP](https://h3.dev/raw/utils/mcp.md): H3 MCP related utils.
- [More utils](https://h3.dev/raw/utils/more.md): More H3 utilities.
- [Community](https://h3.dev/raw/utils/community.md): H3 utils from community.
- [Examples](https://h3.dev/raw/examples.md): Common examples for h3.
- [Cookies](https://h3.dev/raw/examples/handle-cookie.md): Use cookies to store data on the client.
- [Sessions](https://h3.dev/raw/examples/handle-session.md): Remember your users using a session.
- [Static Assets](https://h3.dev/raw/examples/serve-static-assets.md): Serve static assets such as HTML, images, CSS, JavaScript, etc.
- [Stream Response](https://h3.dev/raw/examples/stream-response.md): Stream response to the client.
- [Validate Data](https://h3.dev/raw/examples/validate-data.md): Ensure that your data are valid and safe before processing them.
- [Migration](https://h3.dev/raw/migration.md)
- [H3 1.8 - Towards the Edge of the Web](https://h3.dev/raw/blog/v1.8.md): New H3 release with web and plain adapters, web streams support, object syntax event handlers, typed event handler requests and more!
- [H3 v2 beta](https://h3.dev/raw/blog/v2-beta.md): ⚡ H3 v2 beta is here — fully rewritten on web standards, backward-compatible, and faster than ever!
- [Blog](https://h3.dev/raw/blog.md)