{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://pay.google.com/gp/p/ucp/2026-01-23/schemas/card_payment_instrument.json",
  "title": "Google Pay Card Payment Instrument",
  "description": "This object extends the Card Payment Instrument type with Google Pay tokenized payment credential data.",
  "allOf": [
    {
      "$ref": "https://ucp.dev/2026-01-23/schemas/shopping/types/card_payment_instrument.json"
    },
    {
      "type": "object",
      "properties": {
        "display": {
          "type": "object",
          "required": [
            "brand",
            "last_digits"
          ],
          "properties": {
            "brand": {
              "type": "string",
              "description": "The card network brand for this payment instrument.",
              "enum": [
                "AMEX",
                "DISCOVER",
                "ELECTRON",
                "ELO",
                "ELO_DEBIT",
                "INTERAC",
                "JCB",
                "MAESTRO",
                "MASTERCARD",
                "VISA"
              ]
            }
          }
        },
        "credential": {
          "description": "Tokenization data for the selected payment method.",
          "type": "object",
          "required": [
            "type",
            "token"
          ],
          "properties": {
            "type": {
              "type": "string",
              "enum": [
                "DIRECT",
                "PAYMENT_GATEWAY"
              ],
              "description": "The type of tokenization to be applied to the selected payment method. This value matches the type set in tokenization_specification."
            },
            "token": {
              "type": "string",
              "description": "The generated payment method token."
            }
          }
        }
      }
    }
  ],
  "examples": [
    {
      "id": "instrument_12345",
      "handler_id": "handler_67890",
      "type": "card",
      "display": {
        "brand": "VISA",
        "last_digits": "1234"
      },
      "credential": {
        "type": "PAYMENT_GATEWAY",
        "token": "{\"signature\":\"MEQCIAEFAKESIGNATURE1234567890abcdefghijklmnopqrstuvwxyz\\u003d\\u003d\",\"intermediateSigningKey\":{\"signedKey\":\"{\\\"keyValue\\\":\\\"MFFAKEKEYVALUE1234567890abcdefghijklmnopqrstuvwxyz\\u003d\\\",\\\"keyExpiration\\\":\\\"1772320017000\\\"}\",\"signatures\":[\"SKZFAKESIGNATURE1234567890abcdefghijklmnopqrstuvwxyz\\u003d\\u003d\"]},\"protocolVersion\":\"ECv2\",\"signedMessage\":\"{\\\"encryptedMessage\\\":\\\"FAKEENCRYPTEDMESSAGE1234567890abcdefghijklmnopqrstuvwxyz\\\",\\\"ephemeralPublicKey\\\":\\\"BCFAKEPUBLICKEY1234567890abcdefghijklmnopqrstuvwxyz\\u003d\\\",\\\"tag\\\":\\\"FAKETAG1234567890abcdefghijklmnopqrstuvwxyz\\u003d\\\"}\"}"
      }
    }
  ]
}