I am not sure if "Launch HN" is a thing but by using this tag you lose out on existing tags that have dedicated link like "Show" or "Ask". Why i am telling this? because i saw this headline and made a mental note to look at it later and than i couldn't find it in "Show" where generally these announcements go, it took me a while to search for it again.

Product looks good and polished ! Do you have any plans to add authentication as well? It would be great to have registration/authentication and access control in a single service.