There isn't any functionality between the API and the Review Center at this time.
Depending on whether or not you are using a hosted or on-premises version of Jama, you could utilize some of the links in this article: BIRT and Velocity Custom Reports Created By Our Services Team Available For Your Jama Instances (Community Reports) You will want to look at the Review Center Comments Report. Here is a link to this report's GitHub Repo. For some visual instruction on how to utilize this functionality here is our Education Center, you can find the right videos under the heading: Advanced Reporting.
If you need a more specialized option, I recommend talking to your Account Manager and utilizing our Professional Services with our Custom Report Development.
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