f5c1bd65ae
* Add codex-grid-background detector rule Detects the Codex two-axis grid-line background tell: a single background value carrying two or more hairline `linear-gradient(... 1px, transparent 1px)` layers (one per axis), usually paired with a repeating `background-size` cell. Gated behind --gpt like the sibling codex tells, off by default. Counts hairline stops within a single background declaration (not across the page) so unrelated single-axis ruled lines don't add up to a false flag, and matches the stop directly rather than parsing whole gradient layers, since colors like oklch(...) carry nested parens. Extends the gpt-tells fixture with one flag case and two pass cases (single-axis rule, two-color blend), regenerates the browser detector bundle, and bumps the rule count 44 -> 45. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * Require tiling background-size for codex-grid-background Address review: two hairline gradients alone draw a fixed crosshair, not a grid. Scope detection to a single style block (CSS rule body or inline style attr) and require both >=2 hairline stops AND a tiling `background-size` px cell in the same block, matching the skill rule's "plus background-size" wording. Add a crosshair-without-tiling pass case. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * Scope codex-grid-background hairline count to background values Address review: count hairline stops only inside background/background-image declaration values, not the whole style block, so a hairline in an unrelated property (mask-image, border-image) can't stand in for the grid's second axis. Add a bg+mask-image hairline pass case. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 (1M context) <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 45 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
45 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 24+
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.