How is it connected? What interfaces does it expose? What does it do?
If you cannot answer those questions, then you cannot communicate with it.
You had already established that the "wire" between the devices is BLE - but that doesn't give us any clues as to how they will communicate. I call it a wire to help demonstrate that there is a lot more to it than the wire between devices.
On top of any wire there are protocols which define the interface that you will use.
So you need to do some more research and determine how they plan to communicate. Once you know that, then you can probably google and find the APIs.
Bruce Eitman
Senior Enginer
Bruce.Eitman AT Synopsys DOT com
My BLOG http://geekswithblogs.net/bruceeitman
I work for Synopsys