Chrome can autofill credit card information based on saved credit cards in Google Pay. As far as I know, when the Chrome alert asks you for the CVC of the credit card it sends a request to google after you submit and then returns the name of the cardholder, credit card number, expiration date, and CVC.
Link to Google website about autofill
I would like to make the same request from my own software so I don't need to directly store my credit card information in my program but I can't find out what the request looks like. I'm not even sure if it is even possible to imitate the request or if it is only possible from Chrome itself.
I have already tried to use Wireshark to look at all the network traffic but i can't seem to find anything related to that specific request. I am not at all experienced with any traffic analyzing software so I might just have overseen it.