How would you approach this problem if you are let's say token constrained due to per month limits set in your company?

What I've tried to do is make the bot write detailed spec documents, slowly building it over time as I explain the full problem.

It works for the most part but it's you have some non standard requirement, the agent seems to skip over that part of the spec document when it starts to code. Or it would have needless checks for situations that I said will never happen