Baton, the music player your agents can conduct

Field notes

Baton connects to Navidrome or Subsonic rather than supplying its own catalog, then exposes playback through a localhost MCP endpoint. The page lists 40 music tools, including a mix builder that targets a requested duration, and describes bearer-token authentication with secrets kept in the macOS Keychain. Its playback layer includes gapless playback, crossfade, ReplayGain, and a parametric EQ; streaming EQ is identified as experimental and trades away some playback features.