MridulM

I am trying to create API based login for users. I used following documentation: https://developers.whmcs.com/api-reference/validatelogin/ I got the passwordhash. Now the above documentation says to use passwordhash as ‘login_auth_tk'. But where I can use the ‘login_auth_tk'? I tried https://whmcs_url/oauth/singlesignon.php?login_auth_tk= login_auth_tk, but that didn't work. How to login using this login authentication token?