Lightroom Classic MCP

Instructions

Implementation Reference

• src/lightroom_mcp_custom/server.py:884-896 (handler)

  The MCP tool definition and handler for 'apply_lightroom_preset'. It is decorated with @mcp.tool() and uses the _call helper to communicate with the Lightroom bridge.

  @mcp.tool()
  async def apply_lightroom_preset(
      preset_uuid: str,
      local_ids: list[int] | None = None,
  ) -> dict[str, Any]:
      """Apply a Lightroom develop preset by its UUID."""
      if not preset_uuid:
          raise ValueError("preset_uuid is required")
      ids = validate_local_ids(local_ids)
      payload: dict[str, Any] = {"uuid": preset_uuid}
      if ids:
          payload["local_ids"] = ids
      return await _call("develop.apply_lr_preset", payload)