Hi hdu,
How are you doing today?, As per my understanding, It sounds like you’re really close! That “No API found” error usually means either the wrong API endpoint is being used, or the cluster type doesn’t support ownership changes—for example, shared or serverless clusters often don’t allow changing the owner via API. Make sure you’re using the Permissions API (not the Clusters API) with this format: POST /api/2.0/permissions/clusters/{cluster_id} and passing the new owner's info in the body. Also, your user needs to have admin or CAN_MANAGE permissions on the cluster to make the change. If everything checks out and it’s still failing, the issue is probably the cluster type not allowing this update. Let me know if you want help with the exact API call format—I’m happy to share a quick example!
Regards,
Brahma