Impeccable: open-source design skill for AI coding agents
Impeccable is an open-source design-language skill for AI coding agents by pbakaus, described as building on Anthropic's frontend-design skill for Claude to counter the same SaaS-template look models tend to produce. It ships one skill, 24 commands (init, audit, critique, polish, live and more) and 60 deterministic detector rules that the CLI and browser extension run with no LLM or API key. Install is via npx impeccable install, with support for Claude Code, Cursor, Codex CLI, Gemini CLI, GitHub Copilot, Grok Build, Hermes Agent and others; some harnesses require preview channels or manual hook trust.
It turns design taste into reusable commands and rules, helping coding agents avoid the instantly recognisable AI-generated frontend look.