The idea is more to be an IFTTT/Zapier for developers but without limited inputs and outputs by Graphical User Interface.

With the expressiviy of an all language as Javascript and a console interface to explore API and check easilty data response, developers may not be limited when combining APIs and make exactly what they wanted to do.

But Webscript.io is nice too, some similarities but not the same usefulness, not the same paradigm and not the same language : Javascript ;)