Spycraft re-group the actions as half and full actions (along with reaction and free actions).
So a 1st-level Agent can make two attacks per round (a standard attack action is a half action and so you can make two half action, or one full action, per round). The key is to acquire feats to give you more attacks per round.
A standard attack action is a half action, a move action is a half action, a run is a full action ... you get the gist.