Hi, I'm a coder new in this forum
I have developed an exchange service through which users can convert BTC to XMR or vice versa without signing up, all they have to do is open the trade, the current rate of btc-xmr + your fees will be displayed
after they choose 1 monero for example they'll have to add the btc adress they want to receive coins on and then, they'll be given a xmr address to pay, their secret support key that verifies the owner of trade, and a limited time in which they have to make the payment, the page also displays incoming transactions and their confirmations so if a user got 10 confirmations, the btc will be sent to the user
If you have any questions or need to see a demo you can pm me