Per-VM CPU & RAM allocation?

Hi! If I go into the UI, I can easily see how much each VM is allocated for RAM and CPU. However, I've googled until I'm blue in the face, and can't seem to see a way -- either through CLI or API -- to get that info. "nova limits --tenant <foo>" SEEMS like it should... except (at least on my Juno cloud), the "used" column is either full of zeros or dashes. Clearly, if it's in the UI, it's possible... somehow. But it seemed like it might be easier to ask the list than go down the rabbit hole of tcp captures. Any ideas? Thanks! -Ken P.S. Not interested in CPU-hours/usage -- I'm just looking for how much is actually allocated.