MDN MCP server

This is MDN's experimental MCP server. It gives coding agents access to MDN search, documentation and browser compatibility data, so answers come from current docs rather than old training data.

It has three tools. search finds MDN pages. get-doc returns a full page as markdown. get-compat returns Browser Compatibility Data as JSON, with version support across the major desktop and mobile browsers.

Add the remote server in Claude Code with claude mcp add --transport http mdn https://mcp.mdn.mozilla.net/. You can also run it locally with npm install and npm start. MDN stores query data during the experiment, and you can opt out of first-party analytics with a request header.