Accept payments using Secure Remote Commerce in your existing Stripe integration.
Use Secure Remote Commerce (SRC) to securely pay online, and use the global payments industry to protect your payment information. Users can add cards from Visa, Mastercard, American Express, and Discover to enable Click to Pay. SRC supports all participating network brands.
Note
Before implementing, refer to the implementation requirements. By using Secure Remote Commerce through Stripe, you agree to the Operating Rules. Mastercard offers SRC through its Masterpass platform.
Integrate the Secure Remote Commerce button 
To get started, generate your Masterpass Checkout ID in the Dashboard and configure your sandbox and production callback URLs. Mastercard offers SRC as an update to their Masterpass service.
To use SRC on your website, add the following script tag to your HTML document:
<script type="text/javascript" src="https://sandbox.src.mastercard.com/srci/integration/merchant.js?locale=en_us&checkoutid={checkoutId}"></script>
| Parameter | Description |
|---|---|
locale | The country (and language) of the business. en_ is the only valid value because SRC is only available to US businesses. |
checkoutid | The Checkout ID from Mastercard, copied from the Masterpass section of the Dashboard. |
To display the Masterpass button with black text, use the following image:
To display the Masterpass button with white text, use the following image:
| Parameter | Description |
|---|---|
locale | The country (and language) of the business. en_ is the only valid value because SRC is only available to US businesses. |
paymentmethod | The list of accepted card brands, comma separated (for example: “master,amex,visa,diners,discover,jcb,maestro”). |
checkoutid | The Checkout ID from Mastercard, copied from the Masterpass section of the Dashboard |
Attach a click handler to the image and use it to invoke the masterpass. function with the desired parameters:
const button = document.getElementById('mpbutton');button.addEventListener('click', (ev) => masterpass.checkout({ checkoutId: '{{MASTERPASS_CHECKOUT_ID}}', allowedCardTypes: ['master', 'amex', 'visa'], amount: '10.00', currency: 'USD', cartId: '{{UNIQUE_ID}}', callbackUrl: '{{CALLBACK_URL}}' }));
The masterpass. function requires the following parameters:
| Parameter | Description |
|---|---|
checkoutId | The Checkout ID for your Masterpass project, copied from the Dashboard |
allowedCardTypes | A list of the Masterpass-compatible payment providers that you want to support |
amount | The amount of the transaction, expressed in decimal format |
currency | The currency to use for the transaction |
cartId | A unique string that you generate to identify the purchase |
callbackUrl | You can use this optional parameter to override the default callbackUrl configured when activating Masterpass |
For more details about the masterpass. function and the parameters that it accepts, refer to Mastercard’s documentation.
Complete the payment
When the user clicks the Masterpass button on your checkout page, it takes them to the Masterpass website where they can select an existing payment method from their account or input a new one. When the user completes the process, Masterpass redirects them to the callback URL that you configured when activating Masterpass, or to the specified callback URL when invoking masterpass. function. It appends an oauth_ URL query parameter that your application can use to complete the transaction.
In the route handler for the redirect destination, extract the URL query parameter and use it to confirm the PaymentIntent that you have created at the beginning of the checkout flow. See accept a payment to learn how to manage your checkout flow using Payment Intents.
The following code example demonstrates how to confirm a PaymentIntent with SRC in Node.js with the Express framework:
app.get('/callback', async (req, res) => { // retrieve the PaymentIntent ID created at the beginning of the checkout flow. const payment_intent_id = '{{PAYMENT_INTENT_ID}}'; const payment_intent = await stripe.paymentIntents.confirm(payment_intent_id, { amount: 1000, currency: 'usd', payment_method_data: { type: 'card', card: { masterpass: { cart_id: '{{UNIQUE_ID}}', transaction_id: req.query.oauth_verifier, }, }, }, }); res.send('<h1>Charge succeeded</h1>');});
Test Secure Remote Commerce
To test your SRC integration against Mastercard’s sandbox, create a new SRC user account during the checkout process on your website. Configure the account to use one of the test cards from the Masterpass documentation. Complete the checkout process as normal, selecting the test card as your payment method. If everything works correctly, Mastercard redirects you back to your application, which creates the charge as expected.
The SRC integration only works correctly when included on an http or https page. Stripe doesn’t support serving from the filesystem, even during testing.
