Request objects

  • The Google Pay API uses request objects to configure payment requests and the user experience within the Google Pay payment sheet.

  • Key request objects include PaymentOptions, IsReadyToPayRequest, PaymentDataRequest, PaymentDataCallbacks, and PaymentDataRequestUpdate.

  • Developers can specify accepted payment methods, transaction details, and optional features like shipping address collection.

  • Response objects, error objects, and tokenization are documented separately with examples and guidance provided.

  • Dynamic price updates are supported through callbacks, allowing for flexible pricing during the checkout process.

This reference describes the Google Pay API request object options to use with your website. There are several request objects to configure to make requests to the Google Pay API. To configure the expected experience, a request object is passed to a class method in the Google Pay API client library.

PaymentOptions

Configure this object for a production environment once you've tested your implementation and you're ready to receive payments from shoppers.

If you set up Dynamic Price Updates in your integration, be sure to add MerchantInfo and PaymentDataCallbacks fields.

Property Type Necessity Description
environment string Optional
  • PRODUCTION: Used to return chargeable payment methods when a valid Google merchant ID is specified and configured for the domain.
  • TEST: Dummy payment methods that are suitable for testing (default).
merchantInfo MerchantInfo Optional This object provides information about the merchant that requests payment data.
paymentDataCallbacks PaymentDataCallbacks Optional This object declares the callbacks used for Dynamic Price Updates.
nonce string Optional

Optional Content Security Policy (CSP) nonce to apply to all dynamically injected <style> and <script> elements.

Example

The following example configuration uses non-chargeable payment methods that are suitable for a test environment. It includes the merchant info and payment data callback.

{
  environment: "TEST",
  merchantInfo: {
    merchantName: "Example Merchant",
    merchantId: "12345678901234567890"
  },
  paymentDataCallbacks: {
    onPaymentDataChanged: onPaymentDataChanged,
    onPaymentAuthorized: onPaymentAuthorized
  }
}

IsReadyToPayRequest

This object specifies which payment methods are supported.

Property Type Necessity Description
apiVersion number Required

Major API version.

The value is 2 for this specification.
apiVersionMinor number Required

Minor API version.

The value is 0 for this specification.
allowedPaymentMethods PaymentMethod[ ] Required

Specifies support for one or more payment methods supported by the Google Pay API.

A tokenizationSpecification isn't required to determine a viewer's readiness to pay. Provide all required parameters properties for each supported PaymentMethod.
existingPaymentMethodRequired boolean Optional

If set to true then the IsReadyToPayResponse object includes an additional paymentMethodPresent property that describes the visitor's readiness to pay with one or more payment methods specified in allowedPaymentMethods.

Example

This example shows you how to support payment cards and Android device tokens from all supported card networks.

{
  "apiVersion": 2,
  "apiVersionMinor": 0,
  "allowedPaymentMethods": [
    {
      "type": "CARD",
      "parameters": {
        "allowedAuthMethods": ["PAN_ONLY", "CRYPTOGRAM_3DS"],
        "allowedCardNetworks": ["AMEX", "DISCOVER", "INTERAC", "JCB", "MASTERCARD", "VISA"]
      }
    }
  ]
}

PaymentDataRequest

Use this object to configure your site's support for the Google Pay API.

Property Type Necessity Description
apiVersion number Required Major API version. The value is 2 for this specification.
apiVersionMinor number Required Minor API version. The value is 0 for this specification.
merchantInfo MerchantInfo Required Information about the merchant that requests payment data.
allowedPaymentMethods PaymentMethod[ ] Required Specifies support for one or more payment methods supported by the Google Pay API.
transactionInfo TransactionInfo Conditional

Details about the facilitation of the transaction based upon whether the user agrees to the transaction or not. Includes total price and price status.

Exactly, one of the transactionInfo, recurringTransactionInfo, deferredTransactionInfo, or automaticReloadTransactionInfo must be present.
recurringTransactionInfo RecurringTransactionInfo Conditional Details about enrollment for a recurring transaction.
deferredTransactionInfo DeferredTransactionInfo Conditional Details about enrollment for a deferred transaction.
automaticReloadTransactionInfo AutomaticReloadTransactionInfo Conditional Details about enrollment for automatic reload of a stored balance account.
callbackIntents string[ ] Optional Specifies the following callback intents for PaymentDataCallbacks:
  • OFFER
  • PAYMENT_AUTHORIZATION
  • SHIPPING_ADDRESS
  • SHIPPING_OPTION
offerInfo OfferInfo Optional Specifies which offers to apply when the payment sheet first loads.
emailRequired boolean Optional Set to true to request an email address.
shippingAddressRequired boolean Optional Set to true to request a full shipping address.
shippingAddressParameters ShippingAddressParameters Optional If shippingAddressRequired is set to true, specify shipping address restrictions.
shippingOptionRequired boolean Optional Set to true when the SHIPPING_OPTION callback intent is used. This field is required if you implement support for Authorize Payments or Dynamic Price Updates. For details, see ShippingOptionParameters.
shippingOptionParameters ShippingOptionParameters[ ] Optional Set default options.

Example

The following example shows you how to support payment cards and Android device tokens from all supported card networks. The payment cards are tokenized for an example gateway. The request is for a payment method to charge a final amount of 12.34 United States dollars.

{
  "apiVersion": 2,
  "apiVersionMinor": 0,
  "merchantInfo": {
    "merchantName": "Example Merchant"
  },
  "offerInfo": {
    "offers": [
      {
        "redemptionCode": "exampleCode",
        "description": "example description of offer"
      }
    ]
  },
  "allowedPaymentMethods": [
    {
      "type": "CARD",
      "parameters": {
        "allowedAuthMethods": ["PAN_ONLY", "CRYPTOGRAM_3DS"],
        "allowedCardNetworks": ["AMEX", "DISCOVER", "INTERAC", "JCB", "MASTERCARD", "VISA"]
      },
      "tokenizationSpecification": {
        "type": "PAYMENT_GATEWAY",
        "parameters": {
          "gateway": "example",
          "gatewayMerchantId": "exampleGatewayMerchantId"
        }
      }
    }
  ],
  "transactionInfo": {
    "totalPriceStatus": "FINAL",
    "totalPrice": "12.34",
    "currencyCode": "USD"
  }
}

PaymentDataCallbacks

If your integration uses Dynamic Price Updates, be sure to add the following onPaymentDataChanged and onPaymentAuthorized callbacks:

Property Type Necessity Description
onPaymentDataChanged function Optional Invoked when the following callbackIntents values are set in PaymentDataRequest:
  • OFFER
  • SHIPPING_ADDRESS
  • SHIPPING_OPTION
onPaymentAuthorized function Required Invoked when the following callbackIntents value is set in PaymentDataRequest:
  • PAYMENT_AUTHORIZATION

Example

The following example configuration uses the callbacks needed to set up Dynamic Price Updates:

{
  "onPaymentDataChanged": onPaymentDataChanged,
  "onPaymentAuthorized": onPaymentAuthorized
}

PaymentDataRequestUpdate

This object specifies new transaction info, shipping options and error to update the payment sheet.

Property Type Necessity Description
newOfferInfo OfferInfo Optional Updates the active offers in the payment sheet.
newTransactionInfo TransactionInfo Optional Updates the transaction info in the payment sheet.
newShippingOptionParameters ShippingOptionParameters Optional Updates the shipping options in the payment sheet.
error PaymentDataError Optional Adds an error message to the payment sheet.

Example

The following example shows you all of the payment data request updates that can be returned to Google Pay API. 

{
  "newTransactionInfo": {
    "displayItems": [
      {
        "label": "Pixel 9 Peony 128GB (Unlocked)",
        "type": "LINE_ITEM",
        "price": "799.00"
      },
      {
        "label": "Case-Mate Signature Clear Case for Pixel 9",
        "type": "LINE_ITEM",
        "price": "29.99"
      },
      {
        "label": "Subtotal",
        "type": "SUBTOTAL",
        "price": "828.99"
      },
      {
        "label": "Tax",
        "type": "TAX",
        "price": "8.29"
      }
    ],
    "currencyCode": "USD",
    "totalPriceStatus": "FINAL",
    "totalPrice": "837.28",
    "totalPriceLabel": "Total"
  },
  "newShippingOptionParameters": {
    "defaultSelectedOptionId": "shipping-001",
    "shippingOptions": [
      {
        "id": "shipping-001",
        "label": "Free: Standard shipping",
        "description": "Free Shipping delivered in 5 business days."
      }
    ]
  },
  "newOfferInfo": {
    "offers": [
      {
        "redemptionCode": "exampleCode",
        "description": "example description of offer"
      }
    ]
  },
  "error": {
    "reason": "SHIPPING_ADDRESS_UNSERVICEABLE",
    "message": "Cannot ship to the selected address",
    "intent": "SHIPPING_ADDRESS"
  }
}

MerchantInfo

This object provides information about the merchant that requests payment data.

Property Type Necessity Description
merchantId string Required A Google merchant identifier issued after registration with the Google Pay & Wallet Console. Required when PaymentsClient is initialized with an environment property of PRODUCTION. See Request production access for more information about the approval process and how to obtain a Google merchant identifier. The merchantID can have 12-18 characters.
merchantName string Optional Merchant name encoded as UTF-8. Merchant name is rendered in the payment sheet. In TEST environment, or if a merchant isn't recognized, a “Pay Unverified Merchant” message is displayed in the payment sheet.

Example

The following example shows a merchantInfo object with merchantName.

"merchantInfo": {
    "merchantName": "Example Merchant"
}

PaymentMethod

This object specifies one or more payment methods supported by the Google Pay API and accepted by your website.

Property Type Necessity Description
type string Required

A short identifier for the supported payment method.

CARD is the only supported value for this parameter.

Multiple payment methods of type CARD are not supported.
parameters object Required

Parameters required to configure the provided payment method type.

For more information about expected values for the CARD payment method, see Card Parameters.

tokenizationSpecification PaymentMethodTokenizationSpecification Optional

Configure an account or decryption provider to receive payment information.

This property is required for the CARD payment method.

This property has no effect if it's included as part of an IsReadyToPayRequest.

CARD

The following example shows you how to support payment cards and Android device tokens from all supported card networks. This example shows tokenization through an example gateway.

{
  "type": "CARD",
  "parameters": {
    "allowedAuthMethods": ["PAN_ONLY", "CRYPTOGRAM_3DS"],
    "allowedCardNetworks": ["AMEX", "DISCOVER", "INTERAC", "JCB", "MASTERCARD", "VISA"]
  },
  "tokenizationSpecification": {
    "type": "PAYMENT_GATEWAY",
    "parameters": {
      "gateway": "example",
      "gatewayMerchantId": "exampleGatewayMerchantId"
    }
  }
}

TokenizationSpecification

This object allows you to configure an account to receive chargeable payment information.

Property Type Necessity Description
type string Required

A payment method tokenization type is supported for the given PaymentMethod. For CARD payment method, use PAYMENT_GATEWAY or DIRECT.

parameters object Required Parameters specific to the selected payment method tokenization type.

Gateway

To retrieve payment and customer information from a payment gateway that's supported by the Google Pay API, set type to PAYMENT_GATEWAY. Define the parameters properties as described by your gateway. Typical properties include the gateway's identifier, which is issued by Google, and your gateway account ID, which is provided by the gateway.

The following example shows how to retrieve information from a payment gateway:

"tokenizationSpecification": {
  "type": "PAYMENT_GATEWAY",
  "parameters": {
    "gateway": "example",
    "gatewayMerchantId": "exampleGatewayMerchantId"
  }
}

Use the following table to find the specific "gateway": and "gatewayMerchantId": values for your supported gateway.

Gateway Parameters and documents
9Pay 
  "gateway": "ninepay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

91APP PAYMENTS 
  "gateway": "payments91app"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
A-IT 
  "gateway": "aitecomm"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
ABA PayWay 
  "gateway": "ababank"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
accept.blue 
  "gateway": "acceptblue"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
ACI 
  "gateway": "aciworldwide"
  "gatewayMerchantId": "YOUR_ENTITY_ID"

Developer docs
ACpay 
  "gateway": "acpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Acquired.com 
  "gateway": "acquired"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Adyen 
  "gateway": "adyen"
  "gatewayMerchantId": "YOUR_MERCHANT_ACCOUNT_NAME"

Developer docs
African Payment Solution (PTY) Ltd t/a LekkaPay 
  "gateway": "lekkapay"
  "gatewayMerchantId": "YOUR_MERCHANT_ACCOUNT_NAME"

Developer docs
AI Fintech 
  "gateway": "aifintech"
  "gatewayMerchantId": "YOUR_MERCHANT_ACCOUNT_NAME"

Developer docs
Airba Pay 
  "gateway": "airbapay""
  "gatewayMerchantId": "YOUR_MERCHANT_ACCOUNT_NAME"

Developer docs
Airvend 
  "gateway": "airvend"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Airwallex 
  "gateway": "airwallex"
  "gatewayMerchantId": "YOUR_MERCHANT_ACCOUNT_NAME"

Developer docs
Akua 
  "gateway": "akua"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Akurateco 
  "gateway": "akuratecolab"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Alfa-Bank 
  "gateway": "alfabank"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Algoritma 
  "gateway": "algoritma"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Allinpay 
  "gateway": "allinpayintl"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
AllPayments 
  "gateway": "allpayments"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
alticepay 
  "gateway": "alticepay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
AMO FINTECH LLC 
  "gateway": "amofintech"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Amwal Pay 
  "gateway": "amwalalraqamia"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

No developer docs available
Anedot 
  "gateway": "anedot"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
ApcoPay 
  "gateway": "apcopay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
APPEX 
  "gateway": "epos"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Armenian Card OJSC 
  "gateway": "epgarca"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
AsiaBill 
  "gateway": "asiabill"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

No developer docs available
Assist 
  "gateway": "assist"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Assist Belarus 
  "gateway": "belassist"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Assist Kazakhstan 
  "gateway": "assistkz"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Aurus 
  "gateway": "auruspay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Authorize.net 
  "gateway": "authorizenet"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Axerve 
  "gateway": "gestpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
AXS 
  "gateway": "axsasia"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

No developer docs available
azericardgpay 
  "gateway": "azericardgpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
B2B Soft Pay 
  "gateway": "b2bsoftpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bancstac 
  "gateway": "bancstac"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bank 131 
  "gateway": "bank131"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bank Muscat 
  "gateway": "bankmuscat"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
BANK RBK 
  "gateway": "bankrbkkzpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bank Vostok 
  "gateway": "bankvostok"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Barclaycard 
  "gateway": "barclayssmartpayadvance"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Barion 
  "gateway": "barion"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

Basis Theory 
  "gateway": "basistheory"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

BCC.KZ 
  "gateway": "bccpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
bePaid 
  "gateway": "ecomcharge"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bereke Bank 
  "gateway": "berekepay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Better Payment Germany GmbH 
  "gateway": "betterpayment"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Billing Systems 
  "gateway": "billingsystems"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bindo Labs Limited 
  "gateway": "bindo"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
bisys.kz 
  "gateway": "bisysgpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bizon.one 
  "gateway": "bizonone"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bizzon 
  "gateway": "bizzon"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Blackstone Merchant Services 
  "gateway": "blackstone"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Blocks 
  "gateway": "blocks"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bluefin 
  "gateway": "bluefin"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bluefin Europe 
  "gateway": "bluefineurope"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Blue Media 
  "gateway": "bluemedia"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

BlueSnap 
  "gateway": "bluesnap"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Blusky Technology Services 
  "gateway": "bluskysvcpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
BORICA 
  "gateway": "borica"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
BPC 
  "gateway": "bpcpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
BR-DGE 
  "gateway": "comcarde"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Braintree 
  "gateway": "braintree"
  "braintree:apiVersion": "v1"
  "braintree:sdkVersion": "braintree.client.VERSION"
  "braintree:merchantId": "YOUR_BRAINTREE_MERCHANT_ID"
  "braintree:clientKey": "YOUR_BRAINTREE_TOKENIZATION_KEY"

Developer docs
Braspag 
  "gateway": "cielo"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
BridgerPay 
  "gateway": "bridgerpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Bonum 
  "gateway": "bonumpsp"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
BT Pay 
  "gateway": "btpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Buckaroo 
  "gateway": "buckaroo"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

Buya 
  "gateway": "buya"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

Callpay 
  "gateway": "callpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CARDAQ 
  "gateway": "cardaq"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CardCom 
  "gateway": "cardcom"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
CardConnect 
  "gateway": "cardconnect"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

Cardknox 
  "gateway": "cardknox"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
cardlink 
  "gateway": "cardlink"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Cardstream 
  "gateway": "crst"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Cashflows 
  "gateway": "cashflowsgateway"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Cathay United Bank 
  "gateway": "cathaybk"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CCAvenue UAE 
  "gateway": "ccavenueuae"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CCV 
  "gateway": "ccv"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

Cecabank 
  "gateway": "cecabank"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Celerispay 
  "gateway": "celerispay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CentralPay 
  "gateway": "centralpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

Centrobill LTD 
  "gateway": "centrobill"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

Chargehive 
  "gateway": "chargehive"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CharityEngine 
  "gateway": "charityengine"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Chase Merchant Services 
  "gateway": "chase"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Checkout.com 
  "gateway": "checkoutltd"
  "gatewayMerchantId": "YOUR_PUBLIC_KEY"

Developer docs
CIBPAY MMC 
  "gateway": "cibpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
City Bank PLC 
  "gateway": "citybank"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
CityPay 
  "gateway": "citypay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Cloud9 Payment Gateway (C9PG) 
  "gateway": "c9pg"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CloudPayments 
  "gateway": "cloudpayments"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
CloudWalk 
  "gateway": "cloudwalk"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Coinflow 
  "gateway": "coinflow"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Comax (Native Data LTD) 
  "gateway": "comaxpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Computop 
  "gateway": "computop"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
ConcordPay 
  "gateway": "concordpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Conekta 
  "gateway": "conektagpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Connectum 
  "gateway": "connectum"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

ConnexPay 
  "gateway": "connexpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CoralPay 
  "gateway": "coralpay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Corefy 
  "gateway": "paycoreio"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Coriunder Limited 
  "gateway": "coriunder"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

No developer docs available
Corvus Pay 
  "gateway": "corvuspay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs
Credit2000 
  "gateway": "credit2000"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

Credorax 
  "gateway": "credorax"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs

CrossPay 
  "gateway": "crosspay"
  "gatewayMerchantId": "YOUR_GATEWAY_MERCHANT_ID"

Developer docs