{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/BillingDrop",
  "title": "BillingDrop",
  "type": "object",
  "description": "Cost data in CloudZero Common Bill Format (CBF) for ingestion via AnyCost Stream.",
  "properties": {
    "line_items": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "timestamp": {
            "type": "string",
            "format": "date-time",
            "description": "Timestamp for the billing line item."
          },
          "cost": {
            "type": "number",
            "format": "double",
            "description": "Cost amount for the line item."
          },
          "service": {
            "type": "string",
            "description": "Service name associated with the cost."
          },
          "description": {
            "type": "string",
            "description": "Description of the cost line item."
          },
          "metadata": {
            "type": "object",
            "additionalProperties": {
              "type": "string"
            },
            "description": "Additional metadata for the line item."
          }
        },
        "required": [
          "timestamp",
          "cost"
        ]
      }
    }
  },
  "required": [
    "line_items"
  ]
}