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laws-of-ux

v0.1.0

Reviews and fixes frontend UI against Laws of UX — Fitts's Law, Hick's Law, Jakob's Law, and the rest of the canon, plus curated extended UX principles.

CodexClaude Code1 Skill

By Artem MelnikovLicense: MIT0 GitHub starsUpdated 4 days ago

Directory evidence

Runtimes
Codex and Claude Code
Parsed components
1 skill or MCP entry
Source updated
Sep 19, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install laws-of-ux for Codex and Claude Code

Installs for the current user
codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add laws-of-ux@agent-plugin-marketplace

Paste and run these commands in a terminal with Codex. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/Free-cat/laws-of-ux

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.

Plugin files

laws-of-ux/
├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
└── skills/ux-laws/SKILL.md

Included Skills1

ux-lawsskills/ux-laws/SKILL.md

Use when reviewing, critiquing, auditing, or fixing the UX of a frontend interface against the Laws of UX. Covers usability heuristics, visual hierarchy, cognitive load, choice overload, hit-target sizing, spacing and grouping, feedback and latency, form and navigation structure, onboarding and empty states. Triggers on the law names themselves — Fitts's Law, Hick's Law, Jakob's Law, Miller's Law, Peak-End Rule, Von Restorff Effect, Zeigarnik Effect, Doherty Threshold, Tesler's Law, Postel's Law, Occam's Razor, Aesthetic-Usability Effect, Serial Position Effect, Goal-Gradient Effect, Choice Overload, Cognitive Load, Law of Proximity, Law of Common Region — and on plain questions like "is this button too small", "does this form ask too much", or "critique this screen".

Plugin manifests2

.codex-plugin/plugin.json
{
  "name": "laws-of-ux",
  "description": "Reviews and fixes frontend UI against Laws of UX — Fitts's Law, Hick's Law, Jakob's Law, and the rest of the canon, plus curated extended UX principles.",
  "version": "0.1.0",
  "author": {
    "name": "Artem Melnikov"
  },
  "license": "MIT",
  "keywords": [
    "ux",
    "design",
    "heuristics",
    "laws-of-ux",
    "critique",
    "frontend"
  ],
  "skills": "./skills/",
  "hooks": {}
}
.claude-plugin/plugin.json
{
  "name": "laws-of-ux",
  "description": "Reviews and fixes frontend UI against Laws of UX — Fitts's Law, Hick's Law, Jakob's Law, and the rest of the canon, plus curated extended UX principles.",
  "version": "0.1.0",
  "author": {
    "name": "Artem Melnikov"
  },
  "license": "MIT",
  "keywords": [
    "ux",
    "design",
    "heuristics",
    "laws-of-ux",
    "critique",
    "frontend"
  ]
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[laws-of-ux on Agent Plugins Marketplace](https://pluginsmp.com/plugins/laws-of-ux)