Secure payment confirmationLimited availability
The payment extension of a web authentication credential allows a relying party (such as a bank) to create a credential that can be queried by any merchant origin as part of an online checkout that uses the Payment Request API's secure-payment-confirmation payment method. Also known as SPC.
Not yet supported in all major browsers — check the table and provide a fallback.
Browser support
DesktopChrome
1–138Not supported
139+Supportedsince Aug 5, 2025
Current: 155Edge
12–138Not supported
139+Supportedsince Aug 7, 2025
Current: 154Firefox
✕Not supportedup to 157
Current: 157Safari
✕Not supportedup to 27
Current: 27MobileChrome Android
18–138Not supported
139+Supportedsince Aug 5, 2025
Current: 155Firefox Android
✕Not supportedup to 157
Current: 157Safari iOS
✕Not supportedup to 27
Current: 27How to use
Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.
Example
Full syntax and examples are on MDN: WebAuthn extensions#payment.
Feature detection
JS · check before using
if ("PaymentRequest" in globalThis && "securePaymentConfirmationAvailability" in PaymentRequest) {
// PaymentRequest.securePaymentConfirmationAvailability is available
}Documentation (MDN)
Specification
Sub-features
Support for each part of the feature (2). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| CredentialsContainer.create.publicKey_option.extensions.payment | 95 | 95 | ✕ | ✕ | 95 | ✕ | ✕ |
| PaymentRequest.securePaymentConfirmationAvailability_static | 139 | 139 | ✕ | ✕ | 139 | ✕ | ✕ |