I’m testing manually if that matters. And what do you mean by set up a dev environment?

Ah sorry, if you do not run high volumes of scripted/automated swaps or melts against the mints, just ignore my comment, I misunderstood yours then. By dev env I mean that you could quite easily setup your own mint (even one not backed by real sats) for development or testing purposes.

Ah ok. Thanks for letting me know. 👨‍💻