Reading and Acting on application data?

So i have an idea which i think is possible due to things like CS:GO hacks etc but i'm just not too sure how i'd go about it. I am looking to create a program that (This is for For Honor btw) when you're guard broken in FH it immediately guard breaks back (to counter) the guard break, so i was wondering how would i go about this? Reading the game data to see when you're guard broken what libraries would i use for this etc?

Thanks for reading.

As well this could do something like wait for someone in a chat game to say the name of the bot or something and it'd immediately type back something like that.
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