Musicbrainz MCP server

musicbrainz-mcp

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.

Every read above takes a view, except musicbrainzcoverart. It defaults to compact, which strips image and avatar URLs — a subtractive rule, so it cannot drop a field nobody knew was there; view: "full" returns MusicBrainz's payload untouched. musicbrainzcoverart takes none on purpose: the image URLs are its answer, and stripping them would not shrink the response, it would empty it.

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.