ReaMCP

Instructions

Implementation Reference

• src/reaper_mcp/server.py:495-502 (handler)

  MCP tool registration and handler for listing FX on a track.

  @mcp.tool()
  def list_fx(track_index: int) -> dict[str, Any]:
      """List all FX plugins on a track (name, fx_index, n_params, enabled).
      Use track_index=-1 for the master track."""
      try:
          return _wrap(adapter.list_fx(track_index=track_index))
      except Exception as exc:
          return _err(exc)

• src/reaper_mcp/reaper_adapter.py:279-280 (helper)

  Adapter method that calls the bridge client to retrieve FX list.

  def list_fx(self, track_index: int) -> list[dict[str, Any]]:
      return self._client.call("list_fx", track_index=track_index)