Is there any API to search for specific user from group

Currently Okta user API’s allows searching or filtering users on various criteria, but not based on group membership. There is a separate API for listing group members(list group members API), but it doesn’t allow any other search / filter criteria. How can I search for specific user in a particular group with a userid /particular profile attribute?

No, you need to parse the resulting JSON response: https://developer.okta.com/docs/api/resources/groups/#list-group-members