Loop/Prompt Library / Loops from builders on X
🔁 Write the most useful missing tests
Instead of testing every line, the AI finds the riskiest things that have no tests and writes those first.
Use it when: You have few tests and want the ones that would catch the worst bugs, not just a higher number.
🛑 Stops when: The top [3] missing tests are written and passing, and each one has been shown to fail when the feature breaks.
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Read the code in [folder] and its current tests. List the behaviors that have no tests, ranked by how bad it would be if they broke. Show me the top [3] and why. Then write the most valuable test first. Prove it works: break the feature on purpose, show the test fails, then undo your break and show it passes. Only add tests; don't change the app's code. Move to the next one. Stop when the top 3 tests exist and pass, or after [5] rounds.
Review every change the agent makes before you keep it. Set a budget or round limit — the prompt includes one.
Found on X · by @meta_alchemist. Prompt rewritten in plain English by FixKit AI.
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