{
  "session": {
    "sessionId": "eval-mysql-pool",
    "query": "订单服务大量请求超时，请判断是否和 MySQL 连接池有关。",
    "status": "SUCCESS",
    "agentFlow": "CHAT",
    "totalDurationMs": 51000,
    "toolCallCount": 2,
    "answer": "以下结论基于当前已获取证据，仍存在部分证据缺口，请谨慎参考。\n\nMySQL 连接池可能参与了本次超时问题。日志中出现 connection pool exhausted，但当前缺少完整指标证据，因此只能作为低置信结论处理。",
    "selfEvaluation": {
      "verifier_evaluation": {
        "verdict": "LOW_CONFID",
        "groundedness_score": 0.48,
        "tool_trace_summary": [
          {
            "tool_name": "lookup_knowledge",
            "success": true,
            "evidence_level": "direct"
          },
          {
            "tool_name": "query_logs",
            "success": true,
            "evidence_level": "direct"
          }
        ]
      }
    }
  },
  "steps": [],
  "toolInvocations": [
    {
      "id": 1,
      "sessionId": "eval-mysql-pool",
      "toolName": "lookup_knowledge",
      "success": true,
      "relevanceLevel": "PRECISE"
    },
    {
      "id": 2,
      "sessionId": "eval-mysql-pool",
      "toolName": "query_logs",
      "success": true
    }
  ],
  "summary": {
    "persistedStepCount": 3,
    "returnedStepCount": 3,
    "persistedToolCallCount": 2,
    "returnedToolCallCount": 2,
    "hasVerifierEvaluation": true,
    "hasFeedback": false
  }
}