Final Brief Input Token Count

{
  "causal": false,
  "event_id": "evt_c54f680b6f7dd6a2c8945fed",
  "kind": "FinalBriefInputTokenCount",
  "payload": {
    "call_id": "final-brief-call_838e40a255ab08e97fbfac38",
    "counter_id": "anthropic-messages-direct-v0.2",
    "input_tokens": 10587,
    "request_hash": "1eb458a52f7c1fddebf74de112c42060c73663d2e97545bdca3bbe2d01e5263e"
  },
  "phase": "collect_final_briefs",
  "run_id": "run8",
  "schema_version": "0.1",
  "sequence": 3603,
  "tick": 25
}