Ability to detect keyboard keystrokes?

I was wondering if there was some sort of input feature that could be used to detect keystrokes. For example, if I wanted to remotely control my agent, i could have it set up so tfgh would move it like wasd. Currently, the best way to do this is to have my hotbar filled with random items and control my agent by right clicking with the items, but that seems quite primitive. Thanks in advance for any help