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Day-One Test

Ask for the one test that kills the design first.

One-liners Updated Nov 7, 2026 ~15 tokens
0.0% of 200k
Design the single test that breaks this design on day one.

How to use this prompt

  1. Copy the prompt using the button above
  2. Paste it into your preferred AI coding assistant
  3. Adjust any placeholders or context as needed
  4. Let the agent implement the changes