Fetch usergroups for Jira and Confluence

Atlassian Developer Tools
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1

Which REST APIs can I use to fetch this information?

  1. Get a list of all usergroups of Jira that have access to Jira and product role is “user”
  2. Get a list of all usergroups of Confluence that have access to Confluence and product role is “user”
2

You can use applicationrole API to fetch groups that have access to Jira. And for confluence I’ve been looking for a similar API since quite some time now , without any success