What are the available options to list the version of all agents reporting to your cluster?
APM 2x or SaaS
You have 3 options
Option 1) Use DX Dashboard, here is an example:
For more information, refer to Create a Dashboard Using AIOps_Metrics Data Source
2) Option 2: Use REST API: you can use query inspector to get the query
See also example:
Option 3) Use dx-do: dx-do
This utility is intended to replace CLWorkstation that was available in 10.x on-premise releases.