Step 1: Goto https://api-console.zoho.com and select 'Add Client'

Step 2: Selected 'Server-based Applications' from the Client Type

Step 3: Enter the following and press 'Create'

Client Name
BuiltWith

Homepage URL
https://pro.builtwith.com

Authorized Redirect URIs
https://pro.builtwith.com/zoho

Step 4: Copy the Client ID and Secret and Region (from Step 1) into the screen at https://pro.builtwith.com/zoho/manage/ and press 'Enable'