This quiet "Show HN" reaction is probably because you haven't actually shown anything.
You don't even need to make your product generally available. If hoist is a set of API's, why aren't they publicly documented?
I'm glad you have a nice terms of service [0] section and a big user registration counter, [1], but I recommend starting with a product demo, maybe in a video.
[0] http://hoistapps.com/terms/
[1] https://twitter.com/hoistapps/status/407350960608907264