Hey Guys, I'm starting to build a ruby gem wrap up for this as I want to give it a go with a robot
https://github.com/jhk753/hitbtc_ruby

It's not for use already as completely under development, but I ran into a problem. The api limit is not documented and seems to be pretty low...
After a few test calls (maybe 30 in 1 hour) and I'm not able to access their domain from my computer...
It's an hardcore api limit, maybe to prevent DDOS, but you need to do something about it.

thanks