The prompt brief kit: goal, context, constraints, output, acceptance

The five-part kit

1. Goal: what should be accomplished?
2. Context: who is this for, and what background matters?
3. Constraints: what must stay fixed or appear explicitly?
4. Output: what shape should the answer take?
5. Acceptance: how will you tell if the result is usable?

Short example

Instead of:

Summarize the client meeting.

Write:

Goal: produce weekly client meeting notes.
Context: the audience is a sales lead who only cares about progress, risks, and next steps.
Constraints: do not invent numbers; keep each section under two sentences.
Output: use four sections: progress, risks, open questions, next steps.
Acceptance: someone should know who owns what without replaying the recording.

Why this matters

This is not prompt ceremony. It is a way to define work so it becomes transferable and testable.