demo · v134

rel="facilitated-payment"

A merchant page declares a push-payment endpoint with <link rel="facilitated-payment" href="upi://...">. Chrome surfaces it for UPI / PIX-style flows. Pick a scheme, build a deeplink, and inject the <link> into the page — your DevTools "Elements" panel will show the live tag and on supporting Android Chrome the browser pre-fetches the payment app data.

Heads up Behaviour is primarily Android with a configured push-payment app (e.g. an Indian UPI app for upi://, Brazilian PIX app for pix://). To exercise the full flow enable chrome://flags/#enable-payment-link-detection. On desktop, the link tag is parsed but no payment UI is surfaced.
probing rel="facilitated-payment" support...

Try it

no link injected yet

The code

<link rel="facilitated-payment"
      href="upi://pay?pa=merchant@bank&am=120.50&cu=INR">

// or dynamically:
const l = document.createElement('link');
l.rel = 'facilitated-payment';
l.href = 'upi://pay?pa=merchant@bank&am=120.50&cu=INR';
document.head.appendChild(l);

see also