{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://ap2-protocol.org/schemas/types/total.json",
  "title": "Total",
  "description": "A cost breakdown entry with a category, amount, and optional display text.",
  "type": "object",
  "required": ["type", "amount"],
  "properties": {
    "type": {
      "type": "string",
      "description": "Cost category: subtotal, discount, items_discount, fulfillment, tax, fee, total."
    },
    "display_text": {
      "type": "string"
    },
    "amount": {
      "type": "integer",
      "description": "Signed amount in minor currency units."
    }
  }
}