MusicBrainz MCP Server

Instructions

Implementation Reference

• mcp_musicbrainz/server.py:627-656 (handler)

  The get_label_details function is defined as an MCP tool to fetch and format details about a record label from the MusicBrainz API.

  def get_label_details(label_id: str) -> str:
      """Get details about a record label including type, area, genres, and URLs."""
      res = musicbrainzngs.get_label_by_id(
          label_id,
          includes=["aliases", "tags", "ratings", "url-rels"],
      )
      lb = res["label"]
      tags = [t["name"] for t in lb.get("tag-list", [])]
      genres = ", ".join(tags) if tags else ""
      aliases = ", ".join(al["alias"] for al in lb.get("alias-list", [])[:10])
      urls = "\n".join(
          f"  - {r['type']}: {r['target']}" for r in lb.get("url-relation-list", [])
      )
      lifespan = lb.get("life-span", {})
      begin = lifespan.get("begin", "?")
      end = lifespan.get("end", "present")
  
      parts = [
          f"Name: {lb['name']}",
          f"Type: {lb.get('type', 'N/A')}",
          f"Country: {lb.get('country', 'N/A')}",
          f"Founded: {begin} to {end}",
          f"Label code: {lb.get('label-code', 'N/A')}",
          f"Genres: {genres or 'None listed'}",
          f"Aliases: {aliases or 'None'}",
          f"MBID: {lb['id']}",
      ]
      if urls:
          parts.append(f"URLs:\n{urls}")
      return "\n".join(parts)