Check AA Points Spent Value
 

With $client->GetAAPoints() and $client->SetAAPoints() you can add and remove AA points (that are not spent).

I am wondering, is there a command that can check the number of AA points that have been spent?

Yep, from source:
Perl_croak(aTHX_ "Usage: Client::GetSpentAA(THIS)");

Thanks very much Secrets.

And if you don't mind, how did you find this? Perhaps next time I can just find some of these things myself.

"..\git-eqemusource\Server\zone\perlparser.cpp"