Lightroom Classic MCP

Instructions

Implementation Reference

• src/lightroom_mcp_custom/server.py:738-750 (handler)

  The create_snapshot tool handler, decorated with @mcp.tool(), which takes a name and optional local_ids to create a develop snapshot in Lightroom via the _call helper.

  @mcp.tool()
  async def create_snapshot(
      name: str,
      local_ids: list[int] | None = None,
  ) -> dict[str, Any]:
      """Create a named develop snapshot for the active photo."""
      if not name:
          raise ValueError("name is required")
      ids = validate_local_ids(local_ids)
      payload: dict[str, Any] = {"name": name}
      if ids:
          payload["local_ids"] = ids
      return await _call("develop.create_snapshot", payload)