Get Minimum Cell Dimensions

I’m trying to get the minimum cell edge lengths in X,Y, and Z.
The best solution I’ve found yet is the accepted solution from this link:

Though in that thread @mwestphal commented that this information is already available in the Information tab, which I don’t see. He also mentions that the python code supplied in the accepted answer can be used without Fetching the client-side object, but I cannot figure out how to access explicit coordinate data through the proxy objects.

This thread is from back in 2017 so I hope there is an easier way to get this information now? Or at least if someone could help me access coordinate data using the proxy objects that would be much appreciated.

I probably meant the extent. not the minimum cell length.