Boundlexx already does support Sovereign worlds (used by NixBot on TNT and the bot on Downtown in Brown Town Discords). I do not have a live API key for the Shop API though, so no shop data yet. I already have resources and shops being pulled from Sovereign worlds on Testing worlds so as long as world discovery is not significantly different on the Live Universe, I will definitely be pulling it down.
I know @Mayumichi does not have a in-depth backend for BUTT and her and I have talked about possibly switching it to using Boundlexx, that should solve the Sovereign world problem for BUTT. The issue is that I need to get my Live API key before we can really revisit that.