I'm trying to articulate a question on stackoverflow. In the question, I state that I'm designing an API, and I want to minimize "misusability" within that API. "Misusability" is not a word, as far as I know, so I'm asking whether there is another word that can communicate something along the lines of "misusable" or "not misusable".
Perhaps misapplication or misapplicability will work for you.
misapplication noun: incorrect or improper use. "this silly gossiping is a serious misapplication of your time." (Merriam-Webster online)