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KakaoPay Drop-in integration

Learn how to accept KakaoPay payments.

On this page, you can find additional configuration for adding KakaoPay to your Drop-in integration.

Before you begin

This page assumes you've already:

API reference

You don't need to send additional fields for KakaoPay. To see optional fields that you can send for all payment methods, choose the endpoint you integrated:

Drop-in configuration

There is no KakaoPay specific configuration for Drop-in.

Recurring payments

KakaoPay supports recurring transactions. To make recurring transactions, you need to:

  1. Create a shopper token.
  2. Use the token to make future payments for the shopper.

Create a token

To create a token, include in your /payments request:

  • storePaymentMethod: true
  • shopperReference: Your unique identifier for the shopper.

This triggers the recurring flow, where the shopper logs in to their Kakao account, then confirms the recurring transaction.
When the payment has been settled, you receive a notification webhook containing:

  • eventCode: RECURRING_CONTRACT
  • originalReference: The pspReference of the initial payment.
  • pspReference: This is the token that you need to make recurring payments for this shopper.
Make sure that your server is able to receive RECURRING_CONTRACT as part of your standard notifications. You can enable the RECURRING_CONTRACT event code in the webhook settings page.

Make a payment with a token

To make a payment with the token, include in your /payments request:

  • paymentMethod.storedPaymentMethodId: The pspReference from the RECURRING_CONTRACT notification.
    You can also get this value by using the /listRecurringDetails endpoint.
  • shopperReference: The unique shopper identifier that you specified when creating the token.
  • shopperInteractionContAuth
  • recurringProcessingModel: Use Subscription for a series of transactions following a fixed time interval or UnscheduledCardOnFile for contracts with non-fixed time interval.
    curl https://checkout-test.adyen.com/v68/payments \
    -H "x-API-key: YOUR_X-API-KEY" \
    -H "content-type: application/json" \
    -d '{
           "amount":{
              "value":1000,
              "currency":"KRW"
           },
           "paymentMethod":{
              "type":"kakaopay",
              "storedPaymentMethodId":"7219687191761347"
           },
           "reference":"YOUR_ORDER_NUMBER",
           "merchantAccount":"YOUR_MERCHANT_ACCOUNT",
           "shopperReference":"YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
           "shopperInteraction":"ContAuth",
           "recurringProcessingModel": "Subscription"
    }'
    # Set your X-API-KEY with the API key from the Customer Area.
    adyen = Adyen::Client.new
    adyen.api_key = "YOUR_X-API-KEY"
     
    response = adyen.checkout.payments({
      :amount => {
        :currency => "KRW",
        :value => 1000
      },
      :reference => "YOUR_ORDER_NUMBER",
      :paymentMethod => {
        :type => "kakaopay",
        :storedPaymentMethodId => "7219687191761347"
      },
      :returnUrl => "https://your-company.com/checkout?shopperOrder=12xy..",
      :shopperReference => "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
      :merchantAccount => "YOUR_MERCHANT_ACCOUNT",
      :shopperInteraction => "ContAuth",
      :recurringProcessingModel => "Subscription"
    })
    // Set YOUR_X-API-KEY with the API key from the Customer Area.
    // Change to Environment.LIVE and add the Live URL prefix when you're ready to accept live payments.
    Client client = new Client("YOUR_X-API-KEY", Environment.TEST);
    Checkout checkout = new Checkout(client);
    
    PaymentsRequest paymentsRequest = new PaymentsRequest();
    
    String merchantAccount = "YOUR_MERCHANT_ACCOUNT";
    paymentsRequest.setMerchantAccount(merchantAccount);
    
    Amount amount = new Amount();
    amount.setCurrency("KRW");
    amount.setValue(15000L);
    paymentsRequest.setAmount(amount);
    
    DefaultPaymentMethodDetails paymentMethodDetails = new DefaultPaymentMethodDetails();
    paymentMethodDetails.setStoredPaymentMethodId("7219687191761347");
    paymentMethodDetails.setType("kakaopay");
    paymentsRequest.setPaymentMethod(paymentMethodDetails);
    
    paymentsRequest.setReference("YOUR_ORDER_NUMBER");
    paymentsRequest.setReturnUrl("https://your-company.com/checkout?shopperOrder=12xy..");
    paymentsRequest.setShopperReference("YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j");
    paymentsRequest.setShopperInteraction("ContAuth");
    paymentsRequest.setRecurringProcessingModel("Subscription");
    
    PaymentsResponse paymentsResponse = checkout.payments(paymentsRequest);
    // Set your X-API-KEY with the API key from the Customer Area.
    $client = new \Adyen\Client();
    $client->setXApiKey("YOUR_X-API-KEY");
    $service = new \Adyen\Service\Checkout($client);
    
    $params = array(
      "amount" => array(
        "currency" => "KRW",
        "value" => 1000
      ),
      "reference" => "YOUR_ORDER_NUMBER",
      "paymentMethod" => array(
        "type" => "kakaopay",
        "storedPaymentMethodId" => "7219687191761347"
      ),
      "returnUrl" => "https://your-company.com/checkout?shopperOrder=12xy..",
      "shopperReference" => "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
      "recurringProcessingModel" => "Subscription",
      "shopperInteraction" => "ContAuth",
      "merchantAccount" => "YOUR_MERCHANT_ACCOUNT"
    );
    $result = $service->payments($params);
    #Set your X-API-KEY with the API key from the Customer Area.
    adyen = Adyen.Adyen()
    adyen.client.xapikey = 'YOUR_X-API-KEY'
    
    result = adyen.checkout.payments({
       'amount': {
          'value': 1000,
          'currency': 'KRW'
       },
       'reference': 'YOUR_ORDER_NUMBER',
       'paymentMethod': {
          'type': 'kakaopay',
          'storedPaymentMethodId': '7219687191761347'
       },
       'returnUrl': 'https://your-company.com/checkout?shopperOrder=12xy..',
       'shopperReference': 'YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j'
       'merchantAccount': 'YOUR_MERCHANT_ACCOUNT',
       'shopperInteraction':'ContAuth',
       'recurringProcessingModel': 'Subscription'
    })
    // Set your X-API-KEY with the API key from the Customer Area.
    var client = new Client ("YOUR_X-API-KEY", Environment.Test);
    var checkout = new Checkout(client);
    
    var amount = new Model.Checkout.Amount("KRW", 1000);
    var details = new Model.Checkout.DefaultPaymentMethodDetails{
      Type = "kakaopay",
      StoredPaymentMethodId = "7219687191761347"
    };
    var paymentsRequest = new Model.Checkout.PaymentRequest
    {
      Reference = "YOUR_ORDER_NUMBER",
      Amount = amount,
      ReturnUrl = @"https://your-company.com/checkout?shopperOrder=12xy..",
      MerchantAccount = "YOUR_MERCHANT_ACCOUNT",
      ShopperReference = "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
      RecurringProcessingModel = "Subscription",
      ShopperInteraction = "ContAuth",
      PaymentMethod = details
    };
    
    var paymentResponse = checkout.Payments(paymentsRequest);
    // Set your X-API-KEY with the API key from the Customer Area.
    const {Client, Config, CheckoutAPI} = require('@adyen/api-library');
    const config = new Config();
    // Set your X-API-KEY with the API key from the Customer Area.
    config.apiKey = '[API_KEY]';
    config.merchantAccount = '[YOUR_MERCHANT_ACCOUNT]';
    const client = new Client({ config });
    client.setEnvironment("TEST");
    const checkout = new CheckoutAPI(client);
    checkout.payments({
        amount: { currency: "KRW", value: 1000 },
        paymentMethod: {
            type: 'kakaopay',
            storedPaymentMethodId: "7219687191761347"
        },
        reference: "YOUR_ORDER_NUMBER",
        merchantAccount: config.merchantAccount,
        shopperReference: "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j",
        returnUrl: "https://your-company.com/checkout?shopperOrder=12xy..",
        shopperInteraction: "ContAuth",
        recurringProcessingModel: "Subscription"
    }).then(res => res);

Test and go live

To test successful KakaoPay live payments, you need to use a real mobile number registered with a KakaoPay account.

If you are encountering issues with testing KakaoPay payments, contact our Support Team.

Check the status of KakaoPay test payments in your Customer Area > Transactions > Payments.

Before you can accept live KakaoPay payments, you need to submit a request for KakaoPay in your live Customer Area.

See also