I think that if you build a solid foundation of your project and can articulate somewhat well what it is you want it to do, then you can expect a pretty good result. I typically limit my prompt to a specific file, often specify the lines and outline some of the logic and add references to other files where necessary. Then, Claude gets just enough context to to do what I want it to do.

Another trick I learnt is you can ask Claude to ask you comprehensive questions for clarification. Usually, it will then offer you a choice of 3 options per question that it might have and you can steer it towards the right implementation.