MDN

Open remote MCP server for MDN web documentation, search, and browser compatibility data.

Connection specification

Remote endpoint
https://mcp.mdn.mozilla.net/
Browser access
Authenticated proxy required
Declared MCP transport
Streamable HTTP
Live-validated MCP transport
Streamable HTTP — Observed by the latest catalog validation
Declared authentication
No authentication
Detected authentication
No authentication detected or retained from publisher evidence
Protocol lifecycle
Stateful MCP · 2025-11-25
Category
Documentation

Product documentation · Official listing documentation

Browse all MCP servers · Test this endpoint in the MCP Playground

Authorization setup

No app registration needed

This catalog entry does not require authorization or provider app registration.

Connect this server to your client

Claude Code setup

Run in a terminal. This user-scoped entry is available across projects.

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

No authentication is required by the catalog listing.

  • Using live-validated endpoint: https://mcp.mdn.mozilla.net/

Claude Code MCP documentation

Codex CLI setup

Run in a terminal; Codex stores the entry in ~/.codex/config.toml.

codex mcp add 'mdn' --url 'https://mcp.mdn.mozilla.net/'

No authentication is required by the catalog listing.

  • Using live-validated endpoint: https://mcp.mdn.mozilla.net/

Codex MCP documentation

Cursor setup

Add to .cursor/mcp.json for this project, or ~/.cursor/mcp.json for all projects.

{
  "mcpServers": {
    "mdn": {
      "url": "https://mcp.mdn.mozilla.net/"
    }
  }
}

No authentication is required by the catalog listing.

  • Using live-validated endpoint: https://mcp.mdn.mozilla.net/

Cursor MCP documentation

VS Code setup

Add to .vscode/mcp.json, or run “MCP: Open User Configuration” for a private user-level entry.

{
  "servers": {
    "mdn": {
      "type": "http",
      "url": "https://mcp.mdn.mozilla.net/"
    }
  }
}

No authentication is required by the catalog listing.

  • Using live-validated endpoint: https://mcp.mdn.mozilla.net/

VS Code MCP documentation

Latest validation evidence

Validation status
Online when last tested
Validation checked at
Aug 18, 2026 at 1:34 PM
Validation detail
Negotiated stateful MCP 2025-11-25 at https://mcp.mdn.mozilla.net/; detected transport streamable-http; authentication none

Capabilities provided

Observed at https://mcp.mdn.mozilla.net/ via direct; unauthenticated discovery.

Tools provided by MDN

Complete discovery: 3 retained of 3 observed.

  • get-compat

    Retrieve MDN's Browser Compatibility Data.

    • key · string · required

      BCD feature path from MDN (e.g., 'api.fetch')

  • get-doc

    Retrieve a page of MDN documentation as markdown.

    • path · string · required

      path or full URL: e.g. '/en-US/docs/Web/API/Headers'

  • search

    Search MDN for documentation about web technologies.

    • query · string · required

      search terms: e.g. 'array methods'

Resources provided by MDN

This discovery method is unsupported.

Resource templates provided by MDN

This discovery method is unsupported.

Prompts provided by MDN

This discovery method is unsupported.