Most weak AI answers start with a vague prompt. Prompt Builder turns a plain-language request into a structured six-part prompt you can paste into ChatGPT, Claude or Gemini. Pick a depth, set the stakes, and it assembles outcome, context, analysis strategy, result design, execution and evaluation, and suggests a Power Mode like a pre-mortem when it helps. Free, no account, runs in your browser, makes no AI calls. Built from the method in Beyond the Prompt by Bill Murray.