--- title: "MoMo for API only" description: "Add MoMo to your API-only integration." url: "https://docs.adyen.com/payment-methods/momo-wallet/api-only" source_url: "https://docs.adyen.com/payment-methods/momo-wallet/api-only.md" canonical: "https://docs.adyen.com/payment-methods/momo-wallet/api-only" last_modified: "2026-05-24T12:54:31+02:00" language: "en" --- # MoMo for API only Add MoMo to your API-only integration. [View source](/payment-methods/momo-wallet/api-only.md) You can add MoMo to your existing integration. The following instructions show only what you must add to your integration specifically for MoMo. If an instruction on this page corresponds with a step in the main integration guide, it includes a link to corresponding step of the main integration guide. ## Requirements | Requirement | Description | | | --------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | - | | **Integration type** | Make sure that you have an existing [API-only integration](/online-payments/build-your-integration/advanced-flow/?platform=Web\&integration=API%20only). | | | **Redirect handling** | Make sure that your existing integration is set up to [handle the redirect](/online-payments/build-your-integration/advanced-flow/?platform=Web\&integration=API%20only#handle-the-redirect). `action.type`: **redirect**. | | | **Setup steps** | Before you begin, [add MoMo in your Customer Area](/payment-methods/add-payment-methods). | | ## How it works 1. The shopper selects MoMo as the payment method. 2. The shopper enters their details in the [payment form that you build](#build-your-payment-form). 3. When you make the payment request, you [include additional information about the items that the shopper intends to purchase](#additional-parameters-payments), if applicable. 4. You fulfill the order by sending items to the shopper. ## Build your payment form Include MoMo in the list of available payment methods. You do not need to collect any information from the shopper in your payment form. You can [download the logo for MoMo](/online-payments/build-your-integration/advanced-flow/?platform=Web\&integration=API%2Bonly\&version=71#downloading-logos) to use in your form. ## Get MoMo as an available payment method When you make the [/paymentMethods](https://docs.adyen.com/api-explorer/Checkout/latest/post/paymentMethods) to [get available payment methods](/online-payments/build-your-integration/advanced-flow/?platform=Web\&integration=API%20only#get-available-payment-methods), specify the following so that MoMo is included in the response. | Parameter | Values | | ------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------- | | [countryCode](https://docs.adyen.com/api-explorer/Checkout/latest/post/paymentMethods#request-countryCode) | ****VN**** | | [amount.currency](https://docs.adyen.com/api-explorer/Checkout/latest/post/paymentMethods#request-amount-currency) | ****VND**** | | [amount.value](https://docs.adyen.com/api-explorer/Checkout/latest/post/paymentMethods#request-amount) | The value of the payment. | | [channel](https://docs.adyen.com/api-explorer/Checkout/latest/post/paymentMethods#request-channel) | Specify for example **Web**, **iOS**, or **Android**. | **Example request for available payment methods** ```bash curl https://checkout-test.adyen.com/v72/paymentMethods \ -H 'x-api-key: ADYEN_API_KEY' \ -H 'idempotency-key: YOUR_IDEMPOTENCY_KEY' \ -H 'content-type: application/json' \ -X POST -d '{ "merchantAccount": "ADYEN_MERCHANT_ACCOUNT", "countryCode": "NL", "amount": { "currency": "EUR", "value": 1000 }, "shopperLocale": "nl-NL" }' ``` **Example response with MoMo available** ```json { "paymentMethods": [ { "name": "MoMo", "type": "momo_wallet" } ] } ``` ## Add additional parameters to your /payments request You do not need to add any parameters when you [make a payment](/online-payments/build-your-integration/advanced-flow/?platform=Web\&integration=API%20only#make-a-payment). ## Recurring payments MoMo supports recurring transactions. To make recurring transactions, you need to: 1. [Create a shopper token](#create-a-token). 2. [Use the token to make future payments for the shopper](#make-payment-with-token). ### Create a token To create a token, include in your [/payments](https://docs.adyen.com/api-explorer/Checkout/latest/post/payments) request: * `storePaymentMethod`: **true** * [shopperReference](https://docs.adyen.com/api-explorer/Checkout/latest/post/payments#request-shopperReference): Your unique identifier for the shopper. When the payment has been settled, you receive a [recurring.token.created](https://docs.adyen.com/api-explorer/Tokenization-webhooks/latest/post/recurring.token.created) [webhook](/development-resources/webhooks) containing: * `type`: **recurring.token.created** * `shopperReference`: your unique identifier for the shopper. * `eventId`: the `pspReference` of the initial payment. * `storedPaymentMethodId`: the token that you need to make recurring payments for this shopper. Make sure that your server is able to receive the [Recurring tokens life cycle events](/development-resources/webhooks/webhook-types/#other-webhooks) webhook. You can [set up this webhook in your Customer Area](/development-resources/webhooks/#set-up-webhooks-in-your-customer-area). ### Make a payment with a token To make a payment with the token, include in your [/payments](https://docs.adyen.com/api-explorer/Checkout/latest/post/payments) request: * `paymentMethod.storedPaymentMethodId`: The `storedPaymentMethodId` from the [recurring.token.created](https://docs.adyen.com/api-explorer/Tokenization-webhooks/latest/post/recurring.token.created) webhook. You can also get this value using the [/listRecurringDetails](https://docs.adyen.com/api-explorer/Recurring/latest/post/listRecurringDetails) endpoint. * `shopperReference`: the unique shopper identifier that you specified when creating the token. * `shopperInteraction`: **ContAuth** * `recurringProcessingModel`: Use **Subscription** for a series of transactions following a fixed time interval or **UnscheduledCardOnFile** for contracts with non-fixed time interval. #### curl ```bash curl https://checkout-test.adyen.com/v68/payments \ -H 'x-api-key: ADYEN_API_KEY' \ -H 'content-type: application/json' \ -d '{ "amount":{ "value":1000, "currency":"VND" }, "paymentMethod":{ "type":"momo_wallet", "storedPaymentMethodId":"7219687191761347" }, "reference":"YOUR_ORDER_NUMBER", "merchantAccount":"YOUR_MERCHANT_ACCOUNT", "shopperReference":"YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j", "shopperInteraction":"ContAuth", "recurringProcessingModel": "Subscription" }' ``` #### Java ```java // Set ADYEN_API_KEY with the API key from the Customer Area. // Change to Environment.LIVE and add the Live URL prefix when you are ready to accept live payments. Client client = new Client("ADYEN_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("VND"); amount.setValue(15000L); paymentsRequest.setAmount(amount); DefaultPaymentMethodDetails paymentMethodDetails = new DefaultPaymentMethodDetails(); paymentMethodDetails.setRecurringDetailReference("7219687191761347"); paymentMethodDetails.setType("momo_wallet"); 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); ``` #### PHP ```php // Set your X-API-KEY with the API key from the Customer Area. $client = new \Adyen\Client(); $client->setXApiKey("ADYEN_API_KEY"); $service = new \Adyen\Service\Checkout($client); $params = array( "amount" => array( "currency" => "VND", "value" => 1000 ), "reference" => "YOUR_ORDER_NUMBER", "paymentMethod" => array( "type" => "momo_wallet", "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); ``` #### C\# ```cs // Set your X-API-KEY with the API key from the Customer Area. var client = new Client ("ADYEN_API_KEY", Environment.Test); var checkout = new Checkout(client); var amount = new Adyen.Model.Checkout.Amount("VND", 1000); var details = new Adyen.Model.Checkout.DefaultPaymentMethodDetails{ Type = "momo_wallet", StoredPaymentMethodId = "7219687191761347" }; var paymentsRequest = new Adyen.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 = Adyen.Model.Checkout.PaymentRequest.RecurringProcessingModelEnum.Subscription, ShopperInteraction = Adyen.Model.Checkout.PaymentRequest.ShopperInteractionEnum.ContAuth, PaymentMethod = details }; var paymentResponse = checkout.Payments(paymentsRequest); ``` #### NodeJS (JavaScript) ```js // Adyen Node API Library v16.1.0 // Require the parts of the module you want to use const { Client, CheckoutAPI } = require('@adyen/api-library'); // Initialize the client object const client = new Client({apiKey: "YOUR_X_API_KEY", environment: "TEST"}); // Create the request object const paymentRequest = { amount: { value: 1000, currency: "VND" }, paymentMethod: { type: "momo_wallet", storedPaymentMethodId: "7219687191761347" }, reference: "YOUR_ORDER_NUMBER", merchantAccount: "YOUR_MERCHANT_ACCOUNT", shopperReference: "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j", shopperInteraction: "ContAuth", recurringProcessingModel: "Subscription" } // Make the request const checkoutAPI = new CheckoutAPI(client); const response = checkoutAPI.PaymentsApi.payments(paymentRequest, { idempotencyKey: "UUID" }); ``` #### Python ```py # Adyen Python API Library v12.0.0 import Adyen adyen = Adyen.Adyen() adyen.client.xapikey = "YOUR_X_API_KEY" adyen.client.platform = "test" # The environment to use library in. json_request = { "amount": { "value": 1000, "currency": "VND" }, "paymentMethod": { "type": "momo_wallet", "storedPaymentMethodId": "7219687191761347" }, "reference": "YOUR_ORDER_NUMBER", "merchantAccount": "YOUR_MERCHANT_ACCOUNT", "shopperReference": "YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j", "shopperInteraction": "ContAuth", "recurringProcessingModel": "Subscription" } result = adyen.checkout.payments_api.payments(request=json_request, idempotency_key="UUID") ``` #### Ruby ```rb # Adyen Ruby API Library v9.1.0 require "adyen-ruby-api-library" adyen = Adyen::Client.new adyen.api_key = 'YOUR_X_API_KEY' adyen.env = :test # Set to "live" for live environment request_body = { :amount => { :value => 1000, :currency => 'VND' }, :paymentMethod => { :type => 'momo_wallet', :storedPaymentMethodId => '7219687191761347' }, :reference => 'YOUR_ORDER_NUMBER', :merchantAccount => 'YOUR_MERCHANT_ACCOUNT', :shopperReference => 'YOUR_UNIQUE_SHOPPER_ID_IOfW3k9G2PvXFu2j', :shopperInteraction => 'ContAuth', :recurringProcessingModel => 'Subscription' } result = adyen.checkout.payments_api.payments(request_body, headers: { 'Idempotency-Key' => 'UUID' }) ``` ## Test and go live To make MoMo payments in the test environment: 1. Download the MoMo test app for iOS or Android at . If you are testing on a mobile browser, you see a link to download the test app. If you are testing on a desktop browser, use the test app to scan the QR code. 2. Use [MoMo's test credentials](https://developers.momo.vn/v3/docs/payment/onboarding/test-instructions) to log in to the test app. MoMo provides different credentials depending on the scenario that you want to test (for example, failed scenarios). Check the status of MoMo test payments in your [Customer Area](https://ca-test.adyen.com/) > **Transactions** > **Payments**. Before you can accept live MoMo payments, you need to submit a request for MoMo in your [live Customer Area](https://ca-live.adyen.com/). ## See also * [API-only integration guide](/online-payments/build-your-integration/advanced-flow/?platform=Web\&integration=API%20only)