Token Authentication, Verify JSON response element present, ENV setup

  1. Authentication Token

Have you checked this video

  1. Verify JSON response

https://docs.katalon.com/katalon-studio/docs/verify-api-responses.html

  1. DEV,INT,VAL,PROD

I guess these are a set of Hostnames.

You want to create 4 Execution Profiles named DEV,INT,VAL,PROD. They contain a GlobalVariable “Hostname” and associated values like “http://my.dev.host”, “http://my.int.host”, “http://my.val.host” and “https://my.prod.host”.

Your code will refer to the GlobalVariable.Hostname. See

When you run your test, you choose one of the Execution Profile. Then you can apply a single set of test scripts to 4 different environments

  1. Managers

They should be happy and satisfied if they got Test Report via Email, aren’t they? See
https://docs.katalon.com/katalon-studio/videos/how_to_email_results.html

If not, you need to discuss with them and clarify what they want.