Three or more, and prompting is not your problem. Your client context has no owner, no current version and no visible conflicts. Every AI workflow inherits that, and every person patches it differently.
It usually starts with one surprisingly good prompt.
Someone who knows the account gets a great result. They know which details matter, they add everything the model is missing from memory, and the output works. Nobody writes down what they added.
Then the whole team starts using AI. One works from the pitch deck, one from the last call, one from an old brand PDF that is still on the server. Every workflow now begins with a different version of the client.
The output still looks polished. It stops being dependable. Contradictions disappear inside confident copy, quality depends on who is prompting, and review rounds grow because nobody can see which assumption shaped the result.
“Why did the AI say that?”Sooner or later somebody asks it in a review, and nobody in the room can answer with confidence. The client exists differently in every deck, prompt, call note and person's head.
That is exactly what the list is ordered around. Layer one is the client context: who owns it, where it lives, which version is current. The tools above it only start paying off once that layer holds, which is why they come second in the list and not first.