The info available to non-signed-up people is simply not enough. It would be great if you had a demo account so one can get a feel for how this works.
E.g. I couldn't find info on why I have to add a job description. Wouldn't I post job board, with the posting liniing to the ApplyByAPI test?
I could also not find any info on the tests candidates have to do. Yes, APIs, I get it. But an example wouldn't hurt.
Interesting idea!