{
  "trace_id": "f10-c06-0001",
  "status": "pass",
  "errors": [],
  "warnings": [],
  "computed_reward": 0.6165,
  "contributions": {
    "correctness": 0.32,
    "evidence": 0.22,
    "format": 0.13,
    "abstention": 0.0,
    "latency_cost": -0.0315,
    "token_cost": -0.018,
    "tool_cost": -0.004
  },
  "required_fields": [
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    "run_at",
    "policy_version",
    "reward_card_version",
    "input_slice",
    "candidate_id",
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    "output_tokens",
    "grader_versions",
    "dataset_version"
  ]
}