| name | impeccable |
| description | Design polish with 27 deterministic anti-pattern rules + 12-rule LLM critique. By Paul Bakaus (jQuery UI creator). Commands: polish, audit, critique, typeset, animate, colorize, layout, delight. Apache-2.0.
|
| license | Apache-2.0 |
| auto-activate | false |
impeccable
Hybrid design polish tool — 27 deterministic anti-pattern rules (Layer 1) plus 12-rule LLM critique (Layer 3). Created by Paul Bakaus (jQuery UI creator, former Google Chrome DevTools/AMP DevRel).
Source: https://www.claudepluginhub.com/plugins/pbakaus-impeccable
Install
Install commands are from upstream documentation and may change. Check the Plugin Hub page for current instructions.
npx impeccable detect
npm install -g impeccable
Also available as a browser extension.
Modes
| Mode | When to use |
|---|
| Brand | Design IS the product (marketing sites, portfolios) |
| Product | Design SERVES the product (SaaS, tools, dashboards) |
Commands
polish, audit, critique, typeset, animate, colorize, layout, delight
Why It's Strong
The 27 deterministic rules align with Loam's 60/30/10 layer triage — most design checks are Layer 1 (deterministic), not Layer 3 (LLM). The tool runs the deterministic rules first, then uses LLM critique only where judgment is needed.
Also detects AI-generated design fingerprints.
Known Issues
- Live mode can disconnect
- Component selection finicky on deeply nested DOM
adapt command can break layouts- Monorepo file targeting has edge cases
Requirements
- Node.js (pnpm or Bun)
- Puppeteer for CLI mode
- No API keys needed for deterministic rules
Notes
- Apache-2.0 license, actively maintained
- Strongest design tool evaluated
- Frontend-focused — no value for backend-only projects
