Just for fun, a UI prototype for swapster, exchange using RGB over bitcoin.

How it might work: you have a little micro service that accepts tokens

then exchanges with A * B = K

updates the balances after a trade then issues a tx — probably could do it as free to start off with small % to cover the fees, id need to check the algorithm for that. I'll admit I dont know how to do atomic swaps yet, but cant be that hard, can it?