{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/Invoice",
  "title": "Invoice",
  "type": "object",
  "description": "A billing invoice for an organization.",
  "properties": {
    "id": {
      "type": "string",
      "description": "The unique identifier of the invoice."
    },
    "period_start": {
      "type": "string",
      "format": "date",
      "description": "The start date of the billing period."
    },
    "period_end": {
      "type": "string",
      "format": "date",
      "description": "The end date of the billing period."
    },
    "total": {
      "type": "number",
      "description": "The total invoice amount in cents."
    },
    "currency": {
      "type": "string",
      "description": "The currency code for the invoice."
    },
    "status": {
      "type": "string",
      "description": "The payment status of the invoice.",
      "enum": [
        "draft",
        "open",
        "paid",
        "void"
      ]
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "description": "The timestamp when the invoice was generated."
    }
  }
}