Using bots is not allowed, no. I was going to point you to their terms of service, which clearly state that bots are not allowed, when I noticed that their terms have gotten a pretty big overhaul recently. There used to be just 3 simple rules (no bots, be civil, no multi-accounting). Now, they look like this:
I was also going to quote those 3 terms here, but I was surprised by the new terms list of Freebitco. TheQuin had quoted those
3 simple rules of the terms less than a month ago. So, they have updated the terms recently. And now they have the identity verification rules. I have created a topic about it:
FreeBitco.in is no longer a KYC free casino! (New terms)