Final Brief Input Token Count

{
  "causal": false,
  "event_id": "evt_c048b4fbb80b20b6293a6741",
  "kind": "FinalBriefInputTokenCount",
  "payload": {
    "call_id": "final-brief-call_11e7908b90afba1b14f25331",
    "counter_id": "anthropic-messages-direct-v0.2",
    "input_tokens": 6251,
    "request_hash": "66a2a0c4c5489138770a8dafe4469285ad2bc86c283aeddada202b7460e8c9d3"
  },
  "phase": "collect_final_briefs",
  "run_id": "run8",
  "schema_version": "0.1",
  "sequence": 1237,
  "tick": 9
}