MDN

Web docs, search, and browser compatibility data

Official docs

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.

https://mcp.mdn.mozilla.net/

Setup

claude mcp add mdn --transport http https://mcp.mdn.mozilla.net/