By task · 3 free agents
AI for writing better prompts
Free prompts that debug a prompt giving bad answers, turn a feature prompt into a test plan, and write tomorrow's first prompt for a coding session.
A prompt is a spec, and it fails like one: missing cases, contradicting lines, context that is gone the next morning. These agents treat your prompt as the thing to inspect.
Which one to use
- 01 · LearningEasyPrompt DebuggerPaste a prompt that keeps giving you bad answers, plus one bad answer. Get the exact lines causing it and a fixed prompt.When to use itUse it when a prompt mostly works but gives the same wrong answer every few runs, and adding IMPORTANT in caps made it worse.When to skip itIt needs at least one real bad answer. Without an example of the failure, it can only give general advice.
- 02 · Coding & Vibe CodingEasySession HandoffPaste the mess from a coding session. Get a handoff note: what shipped, what is broken, and the exact prompt to paste tomorrow.When to use itUse it at the end of a coding session, before you close the laptop and lose what the chat knew.When to skip itIt summarizes what you paste. It does not read your repo, so paste the git status and the last errors too.
- 03 · Coding & Vibe CodingMediumTest Plan from the PromptPaste the prompt you used to vibe-code a feature. Get the checks to run before merge, including the case that prompt forgot.When to use itUse it right after you vibe-code a feature, when the happy path works and the cases you never mentioned are untested.When to skip itIt writes the checks, not the test code. Ask your coding agent to implement the cases once you agree with the list.
Side by side
Questions
What is the best free AI prompt for writing better prompts?
It depends on what you start with. Prompt Debugger: use it when a prompt mostly works but gives the same wrong answer every few runs, and adding IMPORTANT in caps made it worse. Session Handoff: use it at the end of a coding session, before you close the laptop and lose what the chat knew. Test Plan from the Prompt: use it right after you vibe-code a feature, when the happy path works and the cases you never mentioned are untested.
Are these writing better prompts prompts really free?
Yes. All 3 are free to copy and reuse under CC BY 4.0, with no sign-up. They are plain-text prompts you paste into ChatGPT, Claude, Gemini, or Cursor.
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