{
  "$defs": {
    "expected_tail": {
      "additionalProperties": false,
      "properties": {
        "event_hmac_sha256": {"pattern": "^[0-9a-f]{64}$", "type": "string"},
        "event_sequence": {"maximum": 1024, "minimum": 1, "type": "integer"},
        "namespace_id": {"pattern": "^[0-9a-f]{64}$", "type": "string"}
      },
      "required": ["event_hmac_sha256", "event_sequence", "namespace_id"],
      "type": "object"
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "properties": {
    "declared_next_action_sha256": {"pattern": "^[0-9a-f]{64}$", "type": "string"},
    "expected_tail": {
      "oneOf": [
        {"$ref": "#/$defs/expected_tail"},
        {"type": "null"}
      ]
    },
    "predicates": {
      "items": {
        "oneOf": [
          {
            "additionalProperties": false,
            "properties": {
              "expected_sha256": {"pattern": "^[0-9a-f]{64}$", "type": "string"},
              "kind": {"const": "repository_instance_equals"}
            },
            "required": ["expected_sha256", "kind"],
            "type": "object"
          },
          {
            "additionalProperties": false,
            "properties": {
              "expected_sha256": {"pattern": "^[0-9a-f]{64}$", "type": "string"},
              "kind": {"const": "git_logical_state_equals"}
            },
            "required": ["expected_sha256", "kind"],
            "type": "object"
          },
          {
            "additionalProperties": false,
            "properties": {
              "expected_content_sha256": {"pattern": "^[0-9a-f]{64}$", "type": "string"},
              "expected_length_bytes": {"maximum": 1048576, "minimum": 0, "type": "integer"},
              "expected_mode": {"pattern": "^[0-7]{4}$", "type": "string"},
              "kind": {"const": "regular_file_equals"},
              "relative_path": {"maxLength": 4096, "minLength": 1, "type": "string", "x-contextguard-maxUtf8Bytes": 4096}
            },
            "required": ["expected_content_sha256", "expected_length_bytes", "expected_mode", "kind", "relative_path"],
            "type": "object"
          },
          {
            "additionalProperties": false,
            "properties": {
              "kind": {"const": "path_absent"},
              "relative_path": {"maxLength": 4096, "minLength": 1, "type": "string", "x-contextguard-maxUtf8Bytes": 4096}
            },
            "required": ["kind", "relative_path"],
            "type": "object"
          }
        ]
      },
      "maxItems": 32,
      "minItems": 1,
      "type": "array"
    },
    "schema_version": {"const": "contextguard-receipt-twin-request/v1"}
  },
  "required": ["declared_next_action_sha256", "expected_tail", "predicates", "schema_version"],
  "title": "Context Guard Receipt execution twin request",
  "type": "object"
}