From your Rest API Doc, I see this endpoint - https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-groups/#api-rest-api-3-group-user-post and https://developer.atlassian.com/cloud/confluence/rest/api-group-group/#api-api-group-userbygroupid-post, but I didn’t find, how to add two and more users to some group with one request, is it possible?
@BakhtiiarMamiedov welcome to the Atlassian developer community!
Short answer, no, you can’t bulk add users to a group via the API with one request.
Longer answer, I would recommend having a look at how Atlassian thinks about user provisioning generally, and looking into the Atlassian-wide user provisioning APIs. The goal of Atlassian Access is to delegate users and groups to the kinds of directory tools that do have strong bulk management capabilities.
Thank you for quick reply