Musicbrainz

CI npm license

An MCP server for MusicBrainz, the open music encyclopedia. It gives Claude live access to MusicBrainz metadata — artists, releases, recordings, labels, works, and more — plus Cover Art Archive images, and (optionally) lets you submit your own tags, ratings, and collection edits.

Developed and maintained by AI (Claude Code). Use at your own discretion.

Tools

Read (no credentials required):

Write (OAuth, confirm-gated):

Each write makes no network call without confirm: true; it returns a dry-run preview first.

Install

This is a Node MCP server (stdio). Point your MCP host at it:

{
  "mcpServers": {
    "musicbrainz": {
      "command": "npx",
      "args": ["-y", "musicbrainz-mcp"]
    }
  }
}

Reads work immediately. MusicBrainz asks clients to make at most one request per second — the server throttles itself to stay within that limit, so large browses are paced automatically.

Enabling the write tools (optional)

1. Register an application at musicbrainz.org/account/applications (redirect URI urn:ietf:wg:oauth:2.0:oob).
2. Complete the OAuth flow with the tag, rating, and collection scopes to obtain a refresh token.
3. Provide these via your MCP host's env (or a local .env):

MUSICBRAINZ_OAUTH_CLIENT_ID=...
MUSICBRAINZ_OAUTH_CLIENT_SECRET=...
MUSICBRAINZ_OAUTH_REFRESH_TOKEN=...

Development

npm install
npm run build
npm test

See CLAUDE.md for architecture and docs/MUSICBRAINZ-API.md for the pinned API shapes.

License

MIT. Data from MusicBrainz, licensed under CC0 / CC BY-NC-SA.