{"error":"event not in the scored corpus","code":"EVENT_NOT_SCORED","next_action":{"description":"Scoring is deterministic, free, and runs client-side.","grade_it_yourself":"https://unitedwetransform.com/grader/","browse_the_corpus":"https://unitedwetransform.com/atlas/","api_contract":"The uwt-edge Cloudflare Worker serves this exact object with a real HTTP 404 on every /api/score/ miss. The MCP tool get_event_score returns the same object on a miss (in tools/call content), with next_action.grade_it_yourself pointing at the grade_agenda tool."}}