pbakaus/impeccable

Impeccable is a design skill for AI coding agents that replaces generic, template-driven output with a shared design vocabulary. Installed into Claude Code, Cursor, Codex, Copilot, Gemini CLI and a dozen other harnesses, it exposes 24 slash commands — polish, audit, critique, distill, bolder, quieter — plus 62 deterministic detector rules that flag AI-generated frontend tells without needing an LLM or API key.

Key Highlights

• 24 design commands behind a single /impeccable skill, from init and shape to polish, harden, and animate
• 62 deterministic detector rules run by the CLI and browser extension with no LLM or API key, catching tells like Inter-everywhere, purple gradients, and cards nested in cards
• Live browser iteration via live and generate for visual variant mode on real elements
• Durable product truth captured in PRODUCT.md and DESIGN.md so commands know audience, constraints, and voice
• Broad harness support — Claude Code, Cursor, Codex, Copilot, Gemini CLI, Grok, Devin, Replit, and more

Best For

Developers and product teams shipping AI-generated frontends who want polished, non-generic UI without a designer in the loop.