Blocking/unblocking users

on our app (Hypi platform) we need to be able to block and unblock the users, is there such an API available in hypi?

Can you elaborate what you mean by block and unblock users?
There are many ways to interpret this for example you could mean you want to stop a user from being able to login or you could mean that you don’t want one user to be able to contact another.

Which of these is it? Can you provide more info about your setup?