Shortcuts -> Make QR -> add contact
Did this work out back in 2021? (Related topic: How to generate QR Code of my contact det… - Apple Community)
This unfortunately doesn't work here.
In the actions choice, there is no "add contact".
Instead, chooseable is "choose contact".
This, however, just generate a QR code of the name of the contact, prompting a web search.
Defining the type of the contact as "vCard" instead of "contact" does not make any difference.
Additionally adding "choose contact details" just allows one detail.
Meh.
iPhone 12 mini