Paul BakausandClaude Fable 5
cfdb7d4c81
Two gaps surfaced by human eval review of real artifacts: 1. side-tab missed the pseudo-element variant. The accent stripe drawn as an absolutely-positioned ::before/::after (left/right: 0, top+bottom: 0 or height: 100%, narrow width, colored background) uses no border property at all, so neither the element-level border checks (pseudo elements never enter the static cascade or DOM walk) nor the border-left/right regexes could see it. New scanCssTextForPseudoStripe scans stylesheet text for that shape, mirroring the border rule's gates: >= 3px thick (<= 12px), chromatic fill (var()-resolved, neutral dividers skipped), full height against a side edge, with the blockquote/prose exemptions preserved. 2. New pulsing-dot rule (slop): small circular "live" indicator dots (<= 16px, border-radius >= 40% or pill values) bound to an infinite animation whose keyframes vary opacity, scale, or box-shadow — or pulse/blink/ping names when the keyframes aren't in the scanned text — plus the Tailwind animate-ping/pulse + rounded-full + tiny-size utility combo. Rotation-only keyframes (spinners) never flag, including when they hide behind a pulse-like name. Both scanners live in checkHtmlPatterns, so the static-html engine and the browser bundle share the same detection path. Browser/extension bundles regenerated; docs rule count bumped to 47. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2.7 KiB
Impeccable CLI
Detect UI anti-patterns and design quality issues from the command line. Scans HTML, CSS, JSX, TSX, Vue, and Svelte files for 47 deterministic rules, including AI-generated UI tells, accessibility violations, and general design quality problems.
Quick Start
# Install skills into your AI harness (Claude, Cursor, Gemini, etc.)
npx impeccable skills install
# Non-interactive install for a specific scope
npx impeccable skills install -y --providers=claude,codex --scope=project
# First command to run inside your AI harness
/impeccable init
# Update skills to the latest version
npx impeccable skills update
# Install or update skills without hook manifests
npx impeccable skills install --no-hooks
# Link skills from a Git submodule checkout
npx impeccable skills link --source=.impeccable --providers=claude,cursor
# List all available commands
npx impeccable skills help
# Scan files or directories for anti-patterns
npx impeccable detect src/
# Scan a live URL (requires Puppeteer)
npx impeccable detect https://example.com
# JSON output for CI/tooling
npx impeccable detect --json src/
# Deprecated compatibility flag; full scan still runs
npx impeccable detect --fast src/
What It Detects
AI Slop Tells: patterns that scream "AI generated this":
- Side-tab accent borders, gradient text on headings
- Purple/violet gradients and cyan-on-dark palettes
- Dark mode with glowing accents, border + border-radius clashes
Typography Issues: overused fonts (Inter, Roboto), flat type hierarchy, single font families
Color & Contrast: WCAG AA violations, gray text on colored backgrounds, pure black/white
Layout & Composition: nested cards, monotonous spacing, everything-centered layouts
Motion: bounce/elastic easing, layout property transitions
Quality: tiny body text, cramped padding, long line lengths, small touch targets
47 deterministic detector rules in total. See the full catalog at impeccable.style/slop.
Exit Codes
0: no issues found2: anti-patterns detected
Options
impeccable detect [options] [file-or-dir-or-url...]
--fast Regex-only mode (skip jsdom, faster but less accurate)
--json Output findings as JSON
--help Show help
Requirements
- Node.js 22.12+
jsdom(included as dependency, used for HTML scanning)puppeteer(optional, only needed for URL scanning)
Part of Impeccable
This CLI is part of Impeccable, a cross-provider design skill pack for AI-powered development tools. The full suite includes 23 commands for Claude, Cursor, GitHub Copilot, Gemini, Codex, and more.