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f40e2f8f0a Add mechanical pre-scan for typeset and layout (#345)
* Add mechanical pre-scan for typeset and layout commands.

Introduce --scope filtering, layout/type rule scopes, DESIGN.md font-size validation, and pre-scan steps in the skill references so agents run detect before LLM judgment.

Fixes #149

Co-authored-by: Cursor <cursoragent@cursor.com>

* Add isolated sub-agent orchestration for typeset and layout pre-scans.

Run the mechanical detector and visual assessment in parallel sub-agents so deterministic findings cannot anchor LLM judgment, matching the critique pattern Paul requested on PR #345.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Fix: reject bare --scope so detect never scans unscoped by mistake.

When --scope had no value, the CLI dropped the flag and ran a full scan instead of failing, which could silently use the wrong rule set during typeset/layout pre-scans.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Fix: require both typeset and layout assessments in sub-agents.

Close a loophole where agents ran only the mechanical pre-scan inline by interpreting "running both" as permitting one inline assessment.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Abdul Wahab <abdulwahab@Abduls-MacBook-Pro-2.local>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-07-09 08:29:21 -07:00

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 46 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

46 deterministic detector rules in total. See the full catalog at impeccable.style/slop.

Exit Codes

  • 0: no issues found
  • 2: 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.

License

Apache 2.0