{
  "schema_version": "datapan.diagnostic-envelope.v1",
  "assessed_at": "2026-07-16T00:30:00Z",
  "fixture": {
    "status": "deterministic_example",
    "scenario_id": "contract-drift",
    "snapshot_at": "2026-07-16T00:30:00Z"
  },
  "subject": {
    "source_id": "data_go_kr",
    "dataset_id": "fixture-dataset-contract",
    "operation_id": "fixture-operation-contract",
    "provider_id": "data_go_kr"
  },
  "cause": {
    "code": "contract_drift",
    "determination": "inferred",
    "layer": "response_contract",
    "explanation_id": "diagnosis.contract_drift"
  },
  "ownership": {
    "accountable_party": "shared"
  },
  "actions": {
    "recommended": [
      {
        "action_id": "refresh_contract",
        "actor": "datapan_cli",
        "rationale_id": "action.refresh_response_contract"
      }
    ],
    "avoid": [
      {
        "action_id": "reissue_credential",
        "actor": "user",
        "rationale_id": "avoid.contract_drift_not_credential"
      }
    ]
  },
  "evidence_refs": [
    {
      "kind": "response_contract",
      "ref_id": "contract:fixture-operation-contract:shape-mismatch",
      "authority": "consumer_validation",
      "scope": {
        "level": "response",
        "subject_ref": "envelope_subject",
        "detail_id": "fixture-operation-contract"
      },
      "version": "response-contract-v1",
      "contract_assertion": {
        "result": "mismatch",
        "policy_version": "response-contract-v1"
      },
      "supports": [
        "cause",
        "scope",
        "determination",
        "ownership",
        "action"
      ],
      "timing": {
        "basis": "relative_to_assessed_at",
        "observed_age_seconds": 0,
        "validity": "current_at_assessment",
        "validity_policy_version": "response-contract-v1",
        "remaining_validity_seconds": 3600
      }
    }
  ],
  "redaction": {
    "secret_values_present": false,
    "secret_hashes_present": false,
    "authorization_headers_present": false,
    "credential_bearing_urls_present": false,
    "raw_provider_text_present": false,
    "raw_provider_urls_present": false,
    "response_bodies_present": false,
    "user_identity_present": false
  }
}