Final Brief Input Token Count

{
  "causal": false,
  "event_id": "evt_036d5604f2cf2b50beda1152",
  "kind": "FinalBriefInputTokenCount",
  "payload": {
    "call_id": "final-brief-call_fde581dddd2c4ccf9cc83a47",
    "counter_id": "anthropic-messages-direct-v0.2",
    "input_tokens": 11671,
    "request_hash": "722506fbc07427bfc7e96650e37a9afad47c0e570c801808732472fa41b0876b"
  },
  "phase": "collect_final_briefs",
  "run_id": "run9",
  "schema_version": "0.1",
  "sequence": 4293,
  "tick": 29
}