Open Source
Impeccable, built by Paul Bakaus, is a design vocabulary for AI agents — a Claude Code / Cursor / Copilot skill that steers coding assistants away from the repetitive, low-quality design patterns models default to. It ships 23 specialized commands (like /polish, /distill, /critique, /harden) and 59 deterministic detector rules that catch common anti-patterns — gray text on colored backgrounds, overused fonts, bounce easing, nested cards — without needing an API key. A single /impeccable init sets up PRODUCT.md and DESIGN.md files documenting brand, voice, colors, and typography so every agent session shares the same design context. It has over 55,000 GitHub stars and works across 14+ AI coding tools and environments.