how to connect to Jama and extract this data

Hi Team ,
We are planning to migrate the data from JAMA to JIRA. We are doing the POC on the DEV environment. In Phase 1, we tried with Excel, and it was successful. In Phase 2, we are planning to do it with API integration. Here we need some help to implement.
Any suggestions? Please provide them to us ASAP.

Thanks
Keerthika