Instantly setup MIAB for new domains bought

What would be the best way to accomplish this?

As soon as I buy a domain name, I want it to be added to an existing MIAB setup without going through DNS setup.

Ouch 250 characters requirement.

I am willing to do contribute but sharing this here to collect ideas, feedback and opinions.

It’s documented here. I’m afraid that you would at least need to set the DNS nameservers at your domain registrar, so some DNS setup is needed. All other DNS stuff will be arranged by the MiaB box.