How to get the API to map with jitsi server with our fornt-end application

Dear Team,

We have installed the Jitsi meet on ubuntu 16.0.4 server and need to install the ssl certificate which is provided by jitsi while installation of jitsi meet but we unable to get the certificate so request you to please help on this.

2: We need to jitsi meet API which we can add with our forent-end server so request you to please help on this.

Regards,
Umesh Mishra.