how to include response fields in contract coverage test?

Thank you for posting to our Community Forum.

Have you had a look at our documentation on REST Coverage and creating representations?

https://support.smartbear.com/readyapi/docs/testing/coverage/rest.html

You can also access representations under Project > *Webservice Name* > HTTP Method (GET, etc) > Representations.

Let me know if you have any questions/concerns.