A long prompt can carry a dozen instructions — must include a disclaimer, never mention competitors, keep it under 100 words, always end with a CTA. Models miss some of these surprisingly often. This checker extracts the instructions from your prompt and audits the output against each, so you can see compliance at a glance instead of re-reading both texts line by line.
How it works
The tool splits your prompt into sentences and flags any that contain imperative cue words — must, should, do not, never, always, only — plus explicit length or format constraints. Each becomes a checklist item. For instructions it can verify mechanically (a banned word, a required phrase, a word limit) it runs the check against your output and shows a verdict with the reason. Instructions it cannot judge automatically are still listed so your checklist stays complete. Everything runs locally in your browser.
What it can and cannot verify
- Auto-checkable: negative constraints (“do not mention X”), positive requirements (“must include Y”), and numeric limits (“under 100 words”).
- Manual only: subjective or stylistic instructions (“be concise”, “sound friendly”) — surfaced for you to judge.
Tips
- Write prompt instructions as clear, separate sentences so the extractor catches each one.
- Treat every verdict as a prompt to look, not a final ruling — heuristics produce both false positives and false negatives.
- Re-run after editing the prompt to confirm new constraints were actually picked up.