MDN
Web docs, search, and browser compatibility data
About MDN
MDN provides documentation for open web technologies including HTML, CSS, JavaScript, Web APIs, and browser compatibility data. Its experimental remote MCP server gives assistants current web platform context for answering implementation and browser-support questions.
Connection details
https://mcp.mdn.mozilla.net/- Transport
- Streamable HTTP
- Authentication
- Open — no authentication
Setup
claude mcp add mdn --transport http https://mcp.mdn.mozilla.net/Frequently asked questions
What is the MDN remote MCP server?
The MDN remote MCP server is a hosted Model Context Protocol endpoint at https://mcp.mdn.mozilla.net/, so AI assistants can connect to it without installing or running anything locally. MDN provides documentation for open web technologies including HTML, CSS, JavaScript, Web APIs, and browser compatibility data. Its experimental remote MCP server gives assistants current web platform context for answering implementation and browser-support questions.
How do I connect to the MDN MCP server?
Add the endpoint https://mcp.mdn.mozilla.net/ to any MCP-compatible client such as Claude Code, Codex, Cursor, or VS Code. The setup snippets on this page configure each client in one step.
Does the MDN MCP server require authentication?
No. The MDN endpoint is open and requires no authentication, so you can connect and start sending requests right away.
Which transport does the MDN MCP server use?
MDN exposes a Streamable HTTP endpoint, the current standard transport for the Model Context Protocol, supported by all major MCP clients.
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