H3 llms.txt · AI Docs Browser · mdream [llms.txt Tools](https://mdream.dev/llms-txt/h3/llms-txt) # H3 llms.txt Browse H3 documentation as markdown. Click any page in the sidebar to view it, or copy the full llms.txt for your AI tools. h3.dev/llms.txt [Raw llms.txt](https://h3.dev/llms.txt) [Raw llms-full.txt](https://h3.dev/llms-full.txt) Copy Markdown [](https://h3.dev/llms.txt) llms.txt Documentation Sets H3 Content Getting Started Request Lifecycle Routing Middleware Event Handlers Sending Response Error Handling Nested Apps H3 H3Event Plugins WebSockets Nightly Builds Utils Request Response Cookie Security Proxy MCP More utils Community Examples Cookies HTTP QUERY Method Sessions Static Assets Stream Response Validate Data Migration H3 1.8 - Towards the Edge of the Web H3 v2 beta Blog ## What is H3's llms.txt? H3 publishes an `/llms.txt` file that provides AI systems with a structured index of its documentation. It follows the [llms.txt specification](https://llmstxt.org), organizing links to guides, API references, and tutorials under section headings so that LLMs like ChatGPT, Claude, and Gemini can quickly understand what H3 offers and where to find details. Pass Spec 2 Sections 34 Links 3.5 KB Size ~896 Tokens Sections: Documentation Sets · Content ## Add H3 Docs to Your AI Assistant Select your tool to see how to add H3's llms.txt as a documentation source. Cursor Windsurf Claude Code ChatGPT Zed Copilot 1. 1 Open any chat or composer panel 2. 2 Type @Docs and select "Add new doc" 3. 3 Paste the URL: https://h3.dev/llms.txt 4. 4 Wait for the green dot (indexing complete) 5. 5 Reference @Docs in chat when asking about H3 Cursor crawls the URL and indexes all subpages. Add a trailing slash to index child pages too. ## Spec Compliance 1 note ## Frequently Asked Questions Where is H3's llms.txt file? H3 publishes its llms.txt at https://h3.dev/llms.txt. This file provides a structured, markdown-formatted index of H3's documentation that AI systems can consume to understand the project's APIs, guides, and references. How do I use H3's llms.txt with AI coding assistants? Copy the llms.txt content and paste it into your AI assistant (Cursor, Windsurf, Claude, ChatGPT) as context. This gives the AI an accurate map of H3's documentation so it can provide better code suggestions and answers about H3. What does H3's llms.txt contain? H3's llms.txt contains 2 sections and 34 documentation links in 3.5 KB (~896 tokens). Key sections include Documentation Sets, Content. How many tokens does H3's llms.txt use? The concise llms.txt index is approximately 896 tokens (3.5 KB). Most AI assistants can fit this within their context window. For the full expanded documentation, look for an llms-full.txt variant which embeds all content inline. What is H3? Minimal H(TTP) framework built for high performance. H3's llms.txt file helps AI systems understand this by providing a structured overview of its documentation, making it easier for developers to get accurate AI-assisted help when working with H3. Can I generate an llms.txt for my own project? Yes. Use the free llms.txt generator at mdream.dev/tools/llms-txt/generator to crawl your site and produce a spec-compliant llms.txt file. You can also validate existing files with the llms.txt validator. ## Browse More llms.txt Files [Vue Router The official router for Vue.js](https://mdream.dev/llms-txt/h3/llms-txt/vue-router) [Nitro Next generation server toolkit](https://mdream.dev/llms-txt/h3/llms-txt/nitro) [Nuxt UI A UI library for modern web apps, powered by Vue & Tailwind CSS](https://mdream.dev/llms-txt/h3/llms-txt/nuxt-ui) [Hono Ultrafast web framework for the Edges](https://mdream.dev/llms-txt/h3/llms-txt/hono) [Nuxt Content File-based CMS for Nuxt applications](https://mdream.dev/llms-txt/h3/llms-txt/nuxt-content) [Elysia Ergonomic framework for Humans](https://mdream.dev/llms-txt/h3/llms-txt/elysia) [Nuxt Image Optimised images for Nuxt applications](https://mdream.dev/llms-txt/h3/llms-txt/nuxt-image) [Waku The minimal React framework](https://mdream.dev/llms-txt/h3/llms-txt/waku) [View all 99 projects ](https://mdream.dev/llms-txt/h3/llms-txt) ## Related Tools [

llms.txt Generator

Generate an llms.txt for your own project.](https://mdream.dev/llms-txt/h3/tools/llms-txt/generator) [

llms.txt Validator

Validate your llms.txt against the official spec.](https://mdream.dev/llms-txt/h3/tools/llms-txt/validator) © 2026 [Harlan Wilton](https://github.com/harlan-zw) · [MIT](https://github.com/harlan-zw/mdream/blob/main/license) [GitHub](https://github.com/harlan-zw/mdream) [Discord](https://discord.com/invite/275MBUBvgP)