{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "actual_units": {
      "minimum": 0,
      "type": "number"
    },
    "authorization_event_id": {
      "anyOf": [
        {
          "pattern": "^evt_[0-7][0123456789abcdefghjkmnpqrstvwxyz]{25}$",
          "type": "string"
        },
        {
          "type": "null"
        }
      ]
    },
    "binding_id": {
      "anyOf": [
        {
          "pattern": "^bind_[0-7][0123456789abcdefghjkmnpqrstvwxyz]{25}$",
          "type": "string"
        },
        {
          "type": "null"
        }
      ]
    },
    "breakdown": {
      "properties": {
        "input_units": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "output_units": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "stored_delta_bytes": {
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          "minimum": -9007199254740991,
          "type": "integer"
        }
      },
      "type": "object"
    },
    "completed_at": {
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$",
      "type": "string"
    },
    "evidence_ref": {
      "properties": {
        "sha256": {
          "pattern": "^[a-f0-9]{64}$",
          "type": "string"
        },
        "uri": {
          "maxLength": 512,
          "type": "string"
        }
      },
      "required": [
        "uri",
        "sha256"
      ],
      "type": "object"
    },
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      "pattern": "^(mres|ws|usr|prod|rev|ver|rel|env|dep|srf|acc|ses|inv|exe|evt|pend|ddl|ntf|pipe|fnd|qual|cred|bind|hdl|cap|svc|frz|adj|fix|upl|dom|wb|ctx|aud|pay|ivc|rfd)_[0-7][0123456789abcdefghjkmnpqrstvwxyz]{25}$",
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    },
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        "tokens",
        "ms",
        "calls",
        "bytes"
      ],
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    },
    "usage_category": {
      "enum": [
        "ai_tokens",
        "runtime",
        "provider_call",
        "storage"
      ],
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    }
  },
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    "subject_id",
    "usage_category",
    "authorization_event_id",
    "actual_units",
    "unit",
    "completed_at"
  ],
  "type": "object"
}