Impeccable

Impeccable is a design skill and CLI tool that helps AI coding agents create polished, consistent user interfaces. It provides 24 commands (like `/polish`, `/audit`, `/critique`) and 61 deterministic design rules to catch common AI-generated UI patterns—such as overused gradients, nested cards, and generic typography. Users set up the tool once with `/impeccable init`, which documents their product context, audience, and design constraints in a `PRODUCT.md` file that guides all subsequent design work.

Designed for developers using Claude, Cursor, or other AI coding tools, Impeccable helps teams ship interfaces aligned with their design systems rather than defaulting to template aesthetics. The tool runs deterministic checks without requiring an API key and supports live browser iteration for real-time refinement.