{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/togai/json-schema/togai-event-schema.json",
  "title": "Togai Usage Event",
  "description": "A usage event ingested into Togai for metering and billing purposes.",
  "type": "object",
  "required": ["id", "schemaName", "accountId", "timestamp"],
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique event identifier (idempotency key)"
    },
    "schemaName": {
      "type": "string",
      "description": "Name of the event schema defining the event structure"
    },
    "accountId": {
      "type": "string",
      "description": "Account ID to attribute the usage to"
    },
    "timestamp": {
      "type": "string",
      "format": "date-time",
      "description": "UTC timestamp when the usage event occurred"
    },
    "dimensions": {
      "type": "object",
      "description": "Categorical attributes used for filtering and grouping",
      "additionalProperties": {
        "type": "string"
      }
    },
    "attributes": {
      "type": "object",
      "description": "Numeric or measured attributes for metering calculations",
      "additionalProperties": {
        "oneOf": [
          { "type": "number" },
          { "type": "string" }
        ]
      }
    }
  }
}