Paul BakausandClaude Fable 5
6ff9f957ac
Flags the decorative low-opacity chromatic radial-gradient "spotlight" washed behind a hero or section and fading to transparent, an AI-slop reflex the saturated radial-halo gate lets slip (e.g. rgba(80,111,255, 0.26) -> transparent on a mobile hero). Gates: a non-repeating radial-gradient whose last stop is transparent, whose visible stops are all low-opacity (alpha < 0.45) with at most two of them, at least one chromatic (channel spread >= 24 exempts neutral vignettes), on a decorative-scale surface (width >= 240, height >= 160, exempting badges/avatars/small lights). The alpha band is disjoint from radial-halo (>= 0.7), so the two never double-report. Wired into both element loops (static-html + injected browser) with the pure checkRadialSpotlight shared by both adapters. TDD fixture with 5 flag / 9 pass shapes. Browser-path sweep over the eval corpus: 29 hits on 11 pages, 0 false positives. Count 59 -> 60. 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 60 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
60 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.