{
  "schema_version": "1.0",
  "rule_code": "risk.expense.reason_too_brief",
  "name": "报销事由过短",
  "enabled": true,
  "risk_dimension": "reason_quality",
  "ontology_signal": "reason_too_brief",
  "evaluator": "reason_too_brief",
  "applies_to": {},
  "inputs": {
    "reason": "claim.reason_corpus"
  },
  "params": {
    "min_reason_length": 6
  },
  "outcomes": {
    "pass": { "severity": "none", "action": "continue" },
    "fail": {
      "severity": "medium",
      "action": "warn"
    }
  },
  "metadata": {
    "owner": "风控与审计部",
    "stability": "platform_builtin",
    "source_ref": "常用risk.txt / 通用 / 事由不足以支撑真实性判断",
    "updated_at": "2026-05-19"
  }
}