How to Adding credit or debit cards from a card issuer’s website

Hi,

I understand that it's possible to add a virtual debit or credit card from a mobile app into the iOS Wallet using PassKit from the Apple SDK. However, I haven't come across documentation on how to achieve this directly from a web app. I found this article on Apple's support site (https://support.apple.com/en-gb/guide/security/secdc2567239/web), which mentions adding cards from a card issuer’s website, but it doesn’t provide details on the process.

Could you please confirm if it's possible to add a card directly from a web app without using a mobile app? If so, could you guide me to the relevant documentation?

Thanks in advance!