It needs to be complete in the sense that if you leave something out or forget to define something, the agent will very likely fill in the gaps for you. Forget a feature or requirement, and the agent will go off confidently and almost certainly in the wrong direction.
At the same time, you need to be concise. Because if you are too effusive, you may give the agent ideas that you don’t want it to have. If you write like Fitzgerald — lush and expansive — the agent will be off and running in a direction you can’t be sure about.
Our compilers will stop cold if we aren’t precise and concise. Our agents? They will proceed with confidence, diligently producing a result that looks great but isn’t what we want.
