MusicBrainz MCP Server

Instructions

Implementation Reference

• mcp_musicbrainz/server.py:539-569 (handler)

  The handler implementation for the get_release_group_details tool.

  def get_release_group_details(release_group_id: str) -> str:
      """Get details about a release group (the album/EP/single concept).
      A release group contains one or more releases (specific editions).
      Use get_release_details for a specific edition's tracklist and barcode."""
      res = musicbrainzngs.get_release_group_by_id(
          release_group_id,
          includes=["artists", "releases", "tags", "ratings", "url-rels"],
      )
      rg = res["release-group"]
      tags = [t["name"] for t in rg.get("tag-list", [])]
      genres = ", ".join(tags) if tags else ""
      artist = rg.get("artist-credit-phrase", "Unknown")
      rtype = rg.get("type", "Unknown")
      date = rg.get("first-release-date", "Unknown")
  
      releases = [
          f"  - {r['title']} ({r.get('date', '?')}) | release ID: {r['id']}"
          for r in rg.get("release-list", [])
      ]
  
      parts = [
          f"Title: {rg['title']}",
          f"Artist: {artist}",
          f"Type: {rtype}",
          f"First Release Date: {date}",
          f"Genres: {genres or 'None listed'}",
          f"MBID: {release_group_id}",
          f"\nReleases in this group ({len(releases)}):",
          *releases[:25],
      ]
      return "\n".join(parts)

• mcp_musicbrainz/server.py:537-538 (registration)

  Registration of the get_release_group_details tool.

  @mcp.tool()
  @cached_tool()