Why login to Zoho accounts required to get OAuth code

Why login to Zoho accounts required to get OAuth code

Hello,

I am trying to integrate Zoho Assist in my web app to have unattended access of remote computers over internet.

While using API, the first step is to get the OAuth authorization from my Zoho account with end point URI:  https://accounts.zoho.in/oauth/v2/auth

I use the code for this step:
https://accounts.zoho.in/oauth/v2/auth
?response_type=code&
client_id=1000.GMB0YULZHJK411284S8I5GZ4CHUEX0&
scope=AaaServer.profile.Read&
redirect_uri=https://www.zylker.com/oauthredirect&
prompt=consent

This requires for me to login to my Zoho account everytime I want to get OAuth code.

Is there a way or any other API to generate OAuth authorization without loggin to Zoho account eveytime.

Thanks.