---
title: Impeccable (open source)
description: Rules and automatic checks that make websites built by AI tools look designed instead of generated.
canonical: "https://10xgtm.ai/oss/impeccable"
type: open-source-review
license: Apache-2.0
repo: "https://github.com/pbakaus/impeccable"
language: JavaScript
---

# Impeccable

Rules and automatic checks that make websites built by AI tools look designed instead of generated.

The most mature design pack for AI coding tools, and increasingly the fix marketers reach for when a Claude- or Cursor-built landing page comes out looking generic. It ships 23 named commands and 59 automatic checks that catch classic AI design tells. One caution: it is community-built and unofficial, so vet it before installing.

## Project facts

- **License:** Apache-2.0
- **Repo:** https://github.com/pbakaus/impeccable
- **Stars:** 65098
- **Language:** JavaScript

## What it does

- Installs once into the major AI coding tools, so any agent building your pages follows the same design standards
- Captures your positioning, audience, voice, colors, and typography in two reference files at setup, which later commands read so output stays on-brand
- Offers 23 focused commands, from audit and polish to bolder, quieter, distill, and animate, so you give design direction in plain words
- Runs 59 automatic checks that catch generic AI design tells, free to repeat on every pass
- Previews design variants live in your browser and re-rolls them on request, closing the gap between prompt and finished page
- Lets you pin favorite commands as standalone shortcuts, so a weekly landing-page audit becomes a single typed word

## What it can't do

- Replace a designer's judgment; it steers and polishes AI output while you still direct and judge the result
- Guarantee a unique look on its own; users report sites still come out similar unless you actively work the commands
- Run without setup; the automatic checks need its companion app, and live preview needs browser software that can stall mid-install
- Escape repeated permission prompts; several AI tools make you re-approve it after their updates
- Run fully offline; live preview and screenshot review drive a real browser session

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Full review: https://10xgtm.ai/oss/impeccable