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.
Automatic checks flag well-known AI design tells: the same font everywhere, purple-to-blue gradients, stacked cards, low-contrast gray text. They run locally with no AI usage fees, so auditing is free.
One installer covers the popular AI tools (Claude Code, Cursor, Codex, Gemini CLI), and it saves your positioning, audience, voice, and brand details once so every later command stays on-brand.
It is community-built and unofficial, and installation changes settings inside your AI tool. Get someone technical to review it before using it on anything that matters.
Live preview depends on extra browser software that fails to install on some machines, with no documented workaround.
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
Pros & cons
- The most mature and widely adopted design pack for AI builders, with every command and check documented on a real homepage
- Checks are repeatable and free since they run locally with no AI usage fees
- One installer covers the major AI tools and remembers your brand context between sessions
- Named commands give you and the agent a shared language for design feedback
- Apache-2.0 licensed and shipping actively, with multiple fixes released in August 2026 alone
- Live preview closes the loop between asking and seeing, with no manual screenshot back-and-forth
- Community-built and unofficial; it modifies settings inside your AI tool, so get a security review before using it on sensitive projects
- Setup has gotchas across tools: permission re-approvals and browser installs each need attention
- Twenty-three commands and dense docs make the learning curve steeper than most packs
- Its taste is opinionated; teams with an established house style may disagree with some flags
- Live preview depends on browser software that can stall mid-install with no documented fallback
- Best results need a hands-on operator who directs and critiques; there is no one-click design autopilot
Recently fixed
Pulled from the repo’s closed issues and PRs. A live project fixes things in public; a dead one doesn’t.
- fix fix(live): scan JSX comment variant markers; never whole-file-inject raw JSX (#454)
- fix Fix: stop the direction page hanging forever after a re-roll (#469)
- fix Lock down the scroll-clip case for text-occlusion
- fix Fix uncaught ground-color drift on comp-led builds
- fix Fix uncaught spacing compression on comp-led builds
- fix Fix: compile closest() selectors once per document in the static scanner (#575)
- fix Fix: keep raster provenance through the finish-review fix loop
- feature Release: skill v4.1.0, CLI v3.6.0, extension v1.3.2
What the community says
Secondly, try using reputed skills and plugins in the vibecoding industry, like pbakaus/impeccable, paper mcp, anaydhawan/components etc.
Two plugins will fix this - https://github.com/pbakaus/impeccable ... Sharing my collection of UX / AI Design Skills for Claude Code that I constantly use myself.
https://github.com/pbakaus/impeccable ... I built a polished admin dashboard with Claude Code — Vercel's Geist ...
I think it could be pbakaus/impeccable. Thanks for sharing!! ... Looks like it. Such a futile waste of a short lifespan we have.
Watch it work
Real tutorials and reviews from YouTube, not ours.
12 sourcesWhere this page’s facts came from. Open the receipts.
- 1GitHub repo (pbakaus/impeccable)
- 2GitHub API — repo metadata
- 3GitHub API — recently closed issues/PRs
- 4Impeccable homepage
- 5Impeccable — Designing with Impeccable docs
- 6Reddit r/ClaudeAI — Design (Impeccable recommended)
- 7Reddit r/ClaudeCode — Claude Code UI content (Impeccable recommended)
- 8Reddit r/ClaudeCode — Skill for Dashboard Style Guide
- 9Reddit r/theprimeagen — repo mentioned by Theo (t3.gg)
- 10YouTube — Impeccable Makes Claude Build Sites That Don't Look Like AI
- 11YouTube — This One Skill Makes Claude Code Actually Good at Web Design
- 12YouTube — Impeccable: The BEST Frontend Design Skill For CLAUDE CODE & CODEX