AbletonMCP

Implementation Reference

• MCP_Server/server.py:525-533 (handler)

  MCP tool handler and registration for 'duplicate_track'. Forwards command to Ableton remote script via socket.

  @mcp.tool()
  def duplicate_track(ctx: Context, track_index: int) -> str:
      try:
          ableton = get_ableton_connection()
          result = ableton.send_command("duplicate_track", {"track_index": track_index})
          return f"Duplicated track '{result.get('original_name')}' to '{result.get('new_name')}' at index {result.get('new_index')}"
      except Exception as e:
          logger.error(f"Error duplicating track: {str(e)}")
          return f"Error duplicating track: {str(e)}"

• AbletonMCP_Remote_Script/__init__.py:1197-1222 (handler)

  Core implementation of duplicate_track command in Ableton Live remote script. Uses Live's API: self._song.duplicate_track(track_index) to duplicate the track.

  def _duplicate_track(self, track_index):
      """Duplicate a track at the specified index"""
      try:
          if track_index < 0 or track_index >= len(self._song.tracks):
              raise IndexError("Track index out of range")
          
          original_track = self._song.tracks[track_index]
          
          # Duplicate the track
          self._song.duplicate_track(track_index)
          
          # Get the new track (it will be at the next index)
          new_track_index = track_index + 1
          new_track = self._song.tracks[new_track_index]
          
          result = {
              "duplicated": True,
              "original_name": original_track.name,
              "new_name": new_track.name,
              "original_index": track_index,
              "new_index": new_track_index
          }
          return result
      except Exception as e:
          self.log_message("Error duplicating track: " + str(e))
          raise

• AbletonMCP_Remote_Script/__init__.py:296-298 (registration)

  Command dispatch/registration in remote script's _process_command that routes 'duplicate_track' to the handler.

  elif command_type == "duplicate_track":
      track_index = params.get("track_index", 0)
      result = self._duplicate_track(track_index)