@monoes/monodesign

@monoes/monodesign

Frontend design intelligence for AI agents — OKLCH design tokens, a 51-rule AI-slop antipattern detector, and the /monodesign agent skill for Claude Code and Gemini agy.

Part of the Monomind ecosystem. v1.2.4 · Apache-2.0

Install

npm install @monoes/monodesign

What's Inside

Module	Export path	Purpose
Design tokens (TS)	@monoes/monodesign	Typed constants for font, spacing, color, motion
Design tokens (CSS)	@monoes/monodesign/tokens	CSS custom properties (tokens.css)
Detection engine	@monoes/monodesign/engine	Node-side 51-rule antipattern detector
Browser bundle	@monoes/monodesign/engine/browser	Browser-compatible detector (no Node deps)

Design Tokens

Source: src/tokens.ts + src/tokens.css

All color tokens are in OKLCH — no hex colors in the token system.

Token Categories

Category	Key Values
Typography	Fonts: 'Cormorant Garamond' (display), 'Instrument Sans' (body), 'Space Grotesk' (mono). Scale: xs (12px) → 7xl (72px). Line-heights: 1.2–2.0
Spacing	8px base grid: --space-1 (4px) → --space-30 (120px)
Color	Neutrals: ink/charcoal/ash/mist/cream/paper/white. Accent: Editorial Magenta oklch(60% 0.25 350) with 9-stop tonal ramp
Motion	Expo-out primary cubic-bezier(0.16,1,0.3,1), plus quint, in-out, in. Durations: 0s → 1.2s
Shadows	sm/md/lg/accent. Max 0.15 alpha.
Radius	none(0) → sm(4px) → md(8px) → lg(12px) → xl(16px) → full(9999px)
Z-index	Named scale: below(−1) → base(0) → raised(1) → overlay(10) → modal(20) → toast(30) → top(40)

CSS Usage

/* Import CSS custom properties */
@import '@monoes/monodesign/tokens';

.hero {
  font-family: var(--font-display);
  color: var(--color-ink);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  transition: transform var(--duration-default) var(--easing-expo-out);
}

TypeScript Usage

import { fontFamily, fontSize, spacing, easing, duration, color, accentScale, shadow, radius } from '@monoes/monodesign';

console.log(color.accent);    // oklch(60% 0.25 350)
console.log(spacing[8]);      // 32px
console.log(radius.lg);       // 12px

Antipattern Detection (51 Rules)

Source: cli/engine/registry/antipatterns.mjs — 564 lines, 51 entries.

Rule Categories

slop (21 rules) — AI-generation tells that make UIs feel generic:

side-tab, border-accent-on-rounded, overused-font, single-font, flat-type-hierarchy, gradient-text, ai-color-palette, cream-palette, nested-cards, monotonous-spacing, bounce-easing, dark-glow, icon-tile-stack, italic-serif-display, hero-eyebrow-chip, repeated-section-kickers, numbered-section-markers, em-dash-overuse, marketing-buzzword, aphoristic-cadence, oversized-h1, extreme-negative-tracking, broken-image

quality (24 rules) — Accessibility and design principle violations:

gray-on-color, low-contrast, layout-transition, line-length, cramped-padding, body-text-viewport-edge, tight-leading, skipped-heading, justified-text, tiny-text, all-caps-body, wide-tracking, text-overflow, clipped-overflow-container, design-system-font, design-system-color, design-system-radius, design-system-font-size, missing-focus-visible, small-touch-target, hover-only-affordance, image-missing-dimensions, dark-scheme-contrast-blindspot

Provider-gated (4 advisory rules, opt-in via --gpt/--gemini): gpt-thin-border-wide-shadow, repeating-stripes-gradient, codex-grid-background, theater-slop-phrase

Detection Engines

Engine	Method	Optional dep
regex	Source text / CSS-in-JS scan	none
static-html	HTMLparser2 static DOM parse	none
browser	Puppeteer live-page scan	puppeteer (optional)
visual	Visual contrast analysis	@monoes/monobrowse (optional)

Auto-Fix

cli/engine/fix/fixers.mjs implements safe per-rule codemods. --dry-run prints unified diffs. --rule <id,...> narrows the fix to specific rule IDs.

OKLCH Palette Seed Library

Source: packages/@monomind/cli/src/commands/design-palette.ts#SEEDS, with the seed data in design-palette-seeds-1.ts and design-palette-seeds-2.ts

• 129 hand-curated seeds spanning the full hue wheel (0°–360°)
• Each seed: { id, oklch: [L, C, H], mood: string, strategy: string }
• Hue-zone weighting: inverse-frequency across 30° buckets — equal probability for all hue regions regardless of seed density
• Env var override: MONODESIGN_PALETTE_SEED

The /monodesign Agent Skill

Source: skill/SKILL.src.md · v2.0.0 · Apache-2.0

Triggers: /monodesign, /design, /frontend-design, plus 40+ natural-language triggers.

24 Skill Commands

Category	Commands
Build	craft, shape, init, document, extract, components, images, palette
Evaluate	critique, audit, research, detect
Refine	polish, bolder, quieter, distill, harden, onboard
Enhance	animate, colorize, typeset, layout, delight, overdrive
Fix	clarify, adapt, optimize
Iterate	live
Management	pin, unpin, hooks

Sub-Agents

Agent file	Role
skill/agents/monodesign-asset-producer.md	Image/asset generation
skill/agents/monodesign-manual-edit-applier.md	Accepts live manual edits during live sessions

Hooks Integration

When enabled (.monodesign/config.json), antipattern detection runs automatically after UI file edits:

{
  "hook": {
    "enabled": true,
    "limits": { "maxFindings": 5, "maxChars": 8000 }
  }
}

Manage via monomind design ignores or /monodesign hooks <on|off|status|ignore-rule|ignore-file|ignore-value|reset>.

CLI Subcommands (monomind design)

Command	Purpose
monomind design detect [-t <path>] [--json]	Scan HTML/CSS for antipatterns
monomind design fix [-t <path>] [--dry-run] [--json] [--rule <ids>]	Auto-fix with safe codemods
monomind design ignores <list|add-rule|add-file|add-value|remove-rule>	Manage detector ignores
monomind design palette [--id <id>] [--from <key>] [--random] [--json]	Pick OKLCH brand seed

Design System Consistency

Source: cli/engine/design-system.mjs — 815 lines

Parses DESIGN.md / .monodesign/design.json to enforce consistency rules (design-system-font, design-system-color, design-system-radius, design-system-font-size). The skill writes DESIGN.md; the detector reads it for drift detection.

Search order: DESIGN.md → .agents/context/DESIGN.md → docs/DESIGN.md.

Package Exports

{
  ".":                   "./src/index.ts",
  "./tokens":            "./src/tokens.css",
  "./engine":            "./cli/engine/detect-antipatterns.mjs",
  "./engine/browser":    "./cli/engine/detect-antipatterns-browser.js"
}

Dependencies: css-select, css-tree, domutils, fflate, htmlparser2, marked
Optional: @monoes/monobrowse (browser detection), puppeteer (live URL scanning)

Links

• GitHub
• Documentation
• Issues

License

Apache-2.0