By task · 3 free agents
AI for reviewing AI-written code
Free prompts that review a diff Cursor or Claude wrote: what behavior changed, which secrets or auth checks are missing, and what to test before you push.
When a model writes the change, the review is the part you still own. These prompts take a real artifact, a diff, an env file, or the feature prompt, and ask specific questions: what moved, who could abuse it, what is missing.
They run in Cursor, Claude, or ChatGPT next to your branch. None of them replaces a reviewer who knows the system. They make sure the obvious problems are gone before that person looks.
Which one to use
- 01 · Coding & Vibe CodingMediumVibe-code Security CheckerA review prompt for vibe-coded diffs. It hunts secrets, missing auth, injection, and insecure defaults, then names the fix.When to use itUse it before you deploy anything a model wrote that touches logins, secrets, user data, or a database.When to skip itIt is not a penetration test and it refuses to write exploits. It names the risk and the fix.
- 02 · Coding & Vibe CodingMediumEnv Var AuditorPaste .env.example and the code that reads it. Get missing keys, unused keys, and names that look like live secrets.When to use itUse it when .env.example and the code drifted apart and you cannot tell which key the app will demand at boot.When to skip itNever paste your real .env with live values. Paste the example file and the code that reads it.
- 03 · Coding & Vibe CodingMediumDiff Risk ReviewerRead a vibe-coded diff for behavior risk: what changed, what can break, and which check to run before you push.When to use itUse it when Cursor or Claude just wrote a change you did not type yourself and you need to know which behavior moved before you push.When to skip itIt is not a style linter and it does not know your production traffic. If the diff touches payments or auth, a human reviewer still signs off.
Side by side
Questions
What is the best free AI prompt for reviewing AI-written code?
It depends on what you start with. Vibe-code Security Checker: use it before you deploy anything a model wrote that touches logins, secrets, user data, or a database. Env Var Auditor: use it when .env.example and the code drifted apart and you cannot tell which key the app will demand at boot. Diff Risk Reviewer: use it when Cursor or Claude just wrote a change you did not type yourself and you need to know which behavior moved before you push.
Are these reviewing AI-written code 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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