there is probably some kind of API where you register it but insufficient instructions , also i suggest to find a solution that does not require a 3rd party API (for instance by attempting to send log in request to server using deliberately wrong info (it will not connect but if you get a response server is up more info on minecraft protocol is here https://wiki.vg/Protocol#Handshaking
also please close some duplicate issues :
epeth0mus/Fugu16#1
epeth0mus/Fugu16#5
epeth0mus/Fugu16#4
there is probably some kind of API where you register it but insufficient instructions , also i suggest to find a solution that does not require a 3rd party API (for instance by attempting to send log in request to server using deliberately wrong info (it will not connect but if you get a response server is up more info on minecraft protocol is here https://wiki.vg/Protocol#Handshaking
also please close some duplicate issues :
epeth0mus/Fugu16#1
epeth0mus/Fugu16#5
epeth0mus/Fugu16#4