Get WAN IP from PFSense

[coatmaker618]

I've got a (quick and dirty) script to log my WAN IP (among other things).  Currently I'm probing an external website for that IP but since PFSense (obviously) has it, it seems silly not to get it from there.

So I'm curious if there's some way I can do a quick query from a device (eg a linux box) on my LAN to PFSense which would return the my WAN IP.