Having the CreativePassport as central tool to manage my info is awesome. But I still have to update my website when I change the Bio for example.

If I could pull it from CP into my website, that would be awesome. Of course most people have some Squarespace site that doesn't allow this, but I think I'm not alone with coding everything from scratch and therefore having the option to automate things aka being lazy, hehe.

I don't even think we need authentication for the API in the beginning. You could expose only the fields that are marked as public by the user.