Auto cPanel / whm login

[techwthquestion]

Hello,

 

For our internal staff we are building portal and in that we want to add functions as below

 

1.Auto cpanel login to client account

2.create / suspend / terminate account for client

3.change server for client domain and setup cpanel on that server

4.change cpanel password

5.Upgrade plan

 

Can you please let us know how can we do this ? For server side functions we are not able to find any API which we can use.