错误包络

统一结构

{
  "error": {
    "request_id": "uuid",
    "provider_id": "u1|u2",
    "status": 402,
    "code": "INSUFFICIENT_CREDITS",
    "message": "human readable",
    "upstream_status": 502
  }
}

常见错误码

• UNAUTHORIZED
• INSUFFICIENT_CREDITS
• UPSTREAM_ERROR
• UPSTREAM_TIMEOUT
• UPSTREAM_UNAVAILABLE
• REQUEST_TOO_LARGE
• UPSTREAM_RESPONSE_TOO_LARGE
• ENDPOINT_NOT_SUPPORTED
• AUTH_BACKEND_UNAVAILABLE
• BILLING_UNAVAILABLE

隐私要求

message 不允许泄露上游域名、品牌或 token。