S.I.M.P.: AI prompt cleaner that fights hallucination

S.I.M.P. analyzes your prompts for vagueness and missing context, scores hallucination risk, and rewrites them so AI models respond accurately.

S.I.M.P. (Sanitized Input Model Prompt) is a web app that takes your raw AI prompts, identifies the weaknesses that cause AI models to hallucinate or go off-track, and rewrites them into tighter, clearer instructions. You get a scored analysis and a ready-to-use sanitized prompt — without having to guess why your AI keeps giving you garbage.

What S.I.M.P. does

Risk scoring — Every prompt you submit gets a hallucination risk score from 1 to 10, bucketed into four labels: Low, Moderate, High, and Critical. The score reflects how likely the prompt is to produce inaccurate or fabricated output.

Issue detection — S.I.M.P. surfaces the specific problems in your prompt: vague instructions, missing context, ambiguous scope, conflicting constraints, and other patterns that trip up AI models.

Prompt rewriting — S.I.M.P. produces a sanitized version of your prompt that addresses the detected issues. The rewrite preserves your intent while adding the precision that models need.

Change log — Each result includes a list of the changes made to your prompt, so you can see exactly what was fixed and why.

Mode selection — Choose how you want the feedback delivered: a constructive, senior-engineer style critique, or a no-holds-barred roast that still tells you exactly what to fix.

AI handoff — Once you have a sanitized prompt, you can send it directly to ChatGPT, Claude, or Gemini with a single click.

How it works

1. Paste your raw prompt into the input field
2. Choose your feedback mode
3. Click the run button
4. Review your hallucination risk score and the list of detected issues
5. Read the sanitized prompt and the changes S.I.M.P. made
6. Copy the sanitized prompt and open it in ChatGPT, Claude, or Gemini

The whole process takes under a minute. You don’t need an account, and you don’t need to install anything.

Two modes

Be Nice gives you constructive, precise feedback — the kind you’d get from a senior engineer reviewing your work. The sanitized prompt is rewritten with the same helpful intent: clear, direct, and actionable.

Roast Me delivers the same accurate analysis with considerably less gentleness. Think Gordon Ramsay reading your prompt aloud and telling you exactly what’s wrong with it. The feedback is harsher, but the sanitized output is just as useful.

Both modes produce the same structured result — risk score, issues, sanitized prompt, changes, and summary. The difference is entirely in tone.

Who is S.I.M.P. for?

S.I.M.P. is useful for anyone who uses AI tools and wants more reliable results. If you’ve ever gotten a hallucinated answer, a response that missed the point, or output that seemed confident but was completely wrong, the problem was likely in the prompt. S.I.M.P. helps you fix that before you ever hit send.

Quick start

Get a sanitized prompt in under a minute — no setup required.

Using S.I.M.P.

Explore Be Nice mode, Roast Me mode, the risk score, and AI handoff.