logicmonitor_sdk ... what do I do with api responses (getDeviceList)

Not sure if this really answers your question but i am also new (less than 6 months) but i generally look at their swagger page to see what I can do with API and LM

Swagger UI (logicmonitor.com)

I also use powershell.  But examples of what i have done is use the api to get all devices of a folder ....then loop through them to add a custom property.  Also used API to get a list of Device IDs by device name, then loop through them to create an SDT for about 1000 servers.  

It takes work but it's useful.