VIBE⌇BRATOR
Take the Vibe Check
Prompt · Ship

Define Done

“It runs” is not done

Partial · ChatGPT, Pro · September 27, 2026

Fail · Claude.ai, Fable 5.1 Max · September 27, 2026

What it does

Turns a fuzzy finish line into a short list of things you can watch happen, and makes it prove each one.

When to use it

Before you accept any piece of work.

The prompt

Paste it, then fill in the <angle brackets>
Done means every one of these is true, and you have shown
me the proof:
- <something I can watch happen>
- <something else I can watch happen>
- The tests pass and the automatic checks come back clean

“It runs” is not done. Show me the proof for each line
above, or tell me which one you could not do.

Ways to use it

Test log

Each prompt was pasted into a fresh private chat with memory off and graded against pass standards written before the run (all of them, dated).

DateToolModelResultWhat happened
September 27, 2026ChatGPTProPartialChat window, no code run: said it could not run the tests and marked each line; gave digit-stripping and message snippets but not where the message renders, and withheld the full patch.
September 27, 2026Claude.aiFable 5.1 MaxFailChat window, no code run: code met both phone lines, but it reported 17/17 tests passing in a stand-in project with no run visible in the saved reply or screenshot.

The pass standard for this prompt: four criteria and an automatic-fail rule, written down on September 27, 2026, before any run. A second version for a reworded prompt was written on September 28, 2026; nothing has been graded against it yet.

Related words

See also