NEMS sends the following anonymous, non-confidential usage data to the NEMS Stats API:
In order to uniquely, but anonymously identify your NEMS server (eg., so we do not duplicate data if you send it twice and so others cannot pretend to be you) your NEMS server will also provide us with your NEMS API Key (which it generates automatically) as well as your NEMS Hardware ID, which you can see if you run nems-info hwid
We store this information to give us an idea how many people are using NEMS, how many hosts they're using, and how we can better improve performance based on the information provided.
If you'd like to review what data we collect, please observe the source code.