{
  "fixture": true,
  "visible": {
    "http_status": 401,
    "error_type": "AuthenticationError",
    "message": "Missing Authorization header",
    "request_id": "demo_401_001"
  },
  "hypotheses": [
    "客户端未注入认证头",
    "代理未透传认证头",
    "请求抵达了非预期端点"
  ],
  "next_checks": [
    "核对实际地址",
    "核对已脱敏的服务端请求头",
    "核对代理转发规则"
  ],
  "confirmed_root_cause": null
}