#99th of 31 in Skills, plugins and rules
impeccable
Design skill and linter for AI coding agents' frontend output
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- Stars
- 79.7k
- License
- Apache-2.0
- Last commit
- Oct 2026
- Last release
- Oct 2026
- Language
- JavaScript
Overview
Impeccable installs a single `/impeccable` skill with 24 commands (audit, critique, polish, harden, animate and others) into AI coding tools such as Claude Code, Cursor, Codex and Gemini CLI. It also ships 59 deterministic detector rules for common AI-generated UI tells, which run in a CLI, browser extension and edit hooks without an LLM or API key. `/impeccable init` writes a PRODUCT.md with durable product context for later commands.
Who it is for: Developers using AI coding agents who want better frontend design output
Strengths
- 59 deterministic detector rules run without an LLM or API key
- Installs into many harnesses: Claude Code, Cursor, Codex, Gemini CLI, Copilot, Grok Build
- Edit hooks flag design issues as the agent writes UI files
- Skill and hooks need no Node runtime; launcher fetches a self-contained binary
Weaknesses
- Hooks can download and cache the engine binary on first edit, even if the session denies it
- Hook support varies by tool; Hermes has none, Grok Build surfaces findings only on Stop
- Codex and Grok Build require manual trust approval for project hooks
- Cursor and Gemini CLI skills need beta or preview settings enabled
What it needs
- no GPU
- Needs AI coding tool (Claude Code, Cursor, Codex, Gemini CLI, etc.)
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