I'm probably missing something here, but what is the value of this when you could write a script that would do just about the same? (Serious question, I want to know the answer, not rhetorical)
Huginn is more of a framework for writing and running these scripts. It has some built in modules to make the process easier. IE: The webhook agent is an easy want of getting POST data into a script without bootstrapping a webserver yourself, you can then just raise an event and have another script handle it. No need to write and manage everything individually, you can run everything in one place.