Is there an easy way to get the information that fleet aggregates about an endpoint from fleet? Such as installed memory, Disk space available, etc?

Define easy. There's the API, and then there's the DB.

Either would be 'easy', I have full DB access and can see about playing with the API as well. I just haven't really done either and figured I would ask if there was a known/documented method before building my own.

If there is, I don't know about it either.

Sounds good, then I will take a look at which is easier for me right now.

Can use the detail queries as examples for the DB. These queries populate data for the Hosts API endpoint and the info you see on the Hosts page in the Fleet UI.

Awesome, thank you Grant! That is exactly the info I was looking for!