{
  "synthetic": true,
  "reference_time": "2026-10-15T12:00:00Z",
  "contract": {
    "version": 1,
    "required_columns": [
      "id",
      "score",
      "team",
      "updated_at"
    ],
    "empty_policy": "fail",
    "checks": [
      {
        "id": "id_present",
        "type": "not_null",
        "columns": [
          "id"
        ]
      },
      {
        "id": "id_unique",
        "type": "unique",
        "columns": [
          "id"
        ]
      },
      {
        "id": "score_bounds",
        "type": "numeric_range",
        "column": "score",
        "min": 0,
        "max": 100
      },
      {
        "id": "team_values",
        "type": "allowed_values",
        "column": "team",
        "values": [
          "red",
          "blue"
        ]
      },
      {
        "id": "team_fk",
        "type": "foreign_key",
        "column": "team",
        "reference_file": "teams.csv",
        "reference_column": "team"
      },
      {
        "id": "fresh",
        "type": "freshness",
        "column": "updated_at",
        "max_age_seconds": 3600
      }
    ]
  },
  "fixtures": {
    "clean": {
      "report": {
        "status": "passed",
        "rows": 2,
        "reference_time": "2026-10-15T12:00:00+00:00",
        "missing_columns": [],
        "empty_violation": false,
        "checks": [
          {
            "id": "id_present",
            "type": "not_null",
            "violations": 0,
            "rows": []
          },
          {
            "id": "id_unique",
            "type": "unique",
            "violations": 0,
            "rows": []
          },
          {
            "id": "score_bounds",
            "type": "numeric_range",
            "violations": 0,
            "rows": []
          },
          {
            "id": "team_values",
            "type": "allowed_values",
            "violations": 0,
            "rows": []
          },
          {
            "id": "team_fk",
            "type": "foreign_key",
            "violations": 0,
            "rows": []
          },
          {
            "id": "fresh",
            "type": "freshness",
            "violations": 0,
            "rows": []
          }
        ]
      },
      "exit_code": 0,
      "columns": [
        "id",
        "score",
        "team",
        "updated_at"
      ],
      "records": [
        {
          "record": 2,
          "values": {
            "id": "a",
            "score": "0",
            "team": "red",
            "updated_at": "2026-10-15T19:00:00+08:00"
          }
        },
        {
          "record": 3,
          "values": {
            "id": "b",
            "score": "100",
            "team": "blue",
            "updated_at": "2026-10-15T12:00:00Z"
          }
        }
      ],
      "checks": [
        {
          "id": "id_present",
          "type": "not_null",
          "violations": 0,
          "rows": [],
          "label": "ID present",
          "description": "ID cannot be blank or whitespace.",
          "samples": []
        },
        {
          "id": "id_unique",
          "type": "unique",
          "violations": 0,
          "rows": [],
          "label": "ID unique",
          "description": "Every ID after its first occurrence is a violation.",
          "samples": []
        },
        {
          "id": "score_bounds",
          "type": "numeric_range",
          "violations": 0,
          "rows": [],
          "label": "Score bounds",
          "description": "Score must be a finite number from 0 to 100, inclusive.",
          "samples": []
        },
        {
          "id": "team_values",
          "type": "allowed_values",
          "violations": 0,
          "rows": [],
          "label": "Allowed team",
          "description": "Team must be exactly red or blue.",
          "samples": []
        },
        {
          "id": "team_fk",
          "type": "foreign_key",
          "violations": 0,
          "rows": [],
          "label": "Team reference",
          "description": "Team must exist in the synthetic teams.csv reference.",
          "samples": []
        },
        {
          "id": "fresh",
          "type": "freshness",
          "violations": 0,
          "rows": [],
          "label": "Freshness",
          "description": "Timestamp must include a timezone and be between 0 and 3,600 seconds old.",
          "samples": []
        }
      ],
      "violation_total": 0,
      "distinct_bad_records": [],
      "distinct_bad_count": 0
    },
    "dirty": {
      "report": {
        "status": "failed",
        "rows": 3,
        "reference_time": "2026-10-15T12:00:00+00:00",
        "missing_columns": [],
        "empty_violation": false,
        "checks": [
          {
            "id": "id_present",
            "type": "not_null",
            "violations": 1,
            "rows": [
              4
            ]
          },
          {
            "id": "id_unique",
            "type": "unique",
            "violations": 1,
            "rows": [
              3
            ]
          },
          {
            "id": "score_bounds",
            "type": "numeric_range",
            "violations": 3,
            "rows": [
              2,
              3,
              4
            ]
          },
          {
            "id": "team_values",
            "type": "allowed_values",
            "violations": 2,
            "rows": [
              2,
              4
            ]
          },
          {
            "id": "team_fk",
            "type": "foreign_key",
            "violations": 2,
            "rows": [
              2,
              4
            ]
          },
          {
            "id": "fresh",
            "type": "freshness",
            "violations": 3,
            "rows": [
              2,
              3,
              4
            ]
          }
        ]
      },
      "exit_code": 1,
      "columns": [
        "id",
        "score",
        "team",
        "updated_at"
      ],
      "records": [
        {
          "record": 2,
          "values": {
            "id": "a",
            "score": "101",
            "team": "green",
            "updated_at": "2026-10-15T10:00:00Z"
          }
        },
        {
          "record": 3,
          "values": {
            "id": "a",
            "score": "bad",
            "team": "red",
            "updated_at": "2026-10-15T12:00:01Z"
          }
        },
        {
          "record": 4,
          "values": {
            "id": " ",
            "score": "NaN",
            "team": "",
            "updated_at": "2026-10-15T12:00:00"
          }
        }
      ],
      "checks": [
        {
          "id": "id_present",
          "type": "not_null",
          "violations": 1,
          "rows": [
            4
          ],
          "label": "ID present",
          "description": "ID cannot be blank or whitespace.",
          "samples": [
            {
              "record": 4,
              "values": {
                "id": " ",
                "score": "NaN",
                "team": "",
                "updated_at": "2026-10-15T12:00:00"
              }
            }
          ]
        },
        {
          "id": "id_unique",
          "type": "unique",
          "violations": 1,
          "rows": [
            3
          ],
          "label": "ID unique",
          "description": "Every ID after its first occurrence is a violation.",
          "samples": [
            {
              "record": 3,
              "values": {
                "id": "a",
                "score": "bad",
                "team": "red",
                "updated_at": "2026-10-15T12:00:01Z"
              }
            }
          ]
        },
        {
          "id": "score_bounds",
          "type": "numeric_range",
          "violations": 3,
          "rows": [
            2,
            3,
            4
          ],
          "label": "Score bounds",
          "description": "Score must be a finite number from 0 to 100, inclusive.",
          "samples": [
            {
              "record": 2,
              "values": {
                "id": "a",
                "score": "101",
                "team": "green",
                "updated_at": "2026-10-15T10:00:00Z"
              }
            },
            {
              "record": 3,
              "values": {
                "id": "a",
                "score": "bad",
                "team": "red",
                "updated_at": "2026-10-15T12:00:01Z"
              }
            },
            {
              "record": 4,
              "values": {
                "id": " ",
                "score": "NaN",
                "team": "",
                "updated_at": "2026-10-15T12:00:00"
              }
            }
          ]
        },
        {
          "id": "team_values",
          "type": "allowed_values",
          "violations": 2,
          "rows": [
            2,
            4
          ],
          "label": "Allowed team",
          "description": "Team must be exactly red or blue.",
          "samples": [
            {
              "record": 2,
              "values": {
                "id": "a",
                "score": "101",
                "team": "green",
                "updated_at": "2026-10-15T10:00:00Z"
              }
            },
            {
              "record": 4,
              "values": {
                "id": " ",
                "score": "NaN",
                "team": "",
                "updated_at": "2026-10-15T12:00:00"
              }
            }
          ]
        },
        {
          "id": "team_fk",
          "type": "foreign_key",
          "violations": 2,
          "rows": [
            2,
            4
          ],
          "label": "Team reference",
          "description": "Team must exist in the synthetic teams.csv reference.",
          "samples": [
            {
              "record": 2,
              "values": {
                "id": "a",
                "score": "101",
                "team": "green",
                "updated_at": "2026-10-15T10:00:00Z"
              }
            },
            {
              "record": 4,
              "values": {
                "id": " ",
                "score": "NaN",
                "team": "",
                "updated_at": "2026-10-15T12:00:00"
              }
            }
          ]
        },
        {
          "id": "fresh",
          "type": "freshness",
          "violations": 3,
          "rows": [
            2,
            3,
            4
          ],
          "label": "Freshness",
          "description": "Timestamp must include a timezone and be between 0 and 3,600 seconds old.",
          "samples": [
            {
              "record": 2,
              "values": {
                "id": "a",
                "score": "101",
                "team": "green",
                "updated_at": "2026-10-15T10:00:00Z"
              }
            },
            {
              "record": 3,
              "values": {
                "id": "a",
                "score": "bad",
                "team": "red",
                "updated_at": "2026-10-15T12:00:01Z"
              }
            },
            {
              "record": 4,
              "values": {
                "id": " ",
                "score": "NaN",
                "team": "",
                "updated_at": "2026-10-15T12:00:00"
              }
            }
          ]
        }
      ],
      "violation_total": 12,
      "distinct_bad_records": [
        2,
        3,
        4
      ],
      "distinct_bad_count": 3
    }
  }
}