KATT's blueprint format is a strict subset of Apiary's legacy blueprint format. Beyond that, there are few similarities. KATT's purpose is to test if the server's response conforms with the blueprint response. Regardless, thanks for the mention :)

If you like KATT/Apiary/HTTP mockeries, keep an eye on https://github.com/andreineculau/hyperrest-bin and https://github.com/klarna/katt