ui-ux-designer

ui-ux-designer is a skill for Claude Code, Codex from jggomez/expert-ai-developer-skills. It costs 71 tokens per session (1,484 once invoked), scanned A, original, Apache-2.0.

Expert UI/UX designer and design systems architect. Establishes official Google 2-layer DESIGN.md contracts (YAML tokens + 8 concise sections), optional feature UI deltas (## Design section of docs/ /spec.md), accessibility (WCAG AA), and responsive component states for web and mobile apps.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Install with agentmods
npx agentmods add skills/jggomez/expert-ai-developer-skills/ui-ux-designer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add jggomez/expert-ai-developer-skills --skill ui-ux-designer
Clone the repo
git clone --depth 1 https://github.com/jggomez/expert-ai-developer-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ui-ux-designer

README.md
[![agentmods](https://agentmods.dev/badge/skills/jggomez/expert-ai-developer-skills/ui-ux-designer/github.svg)](https://agentmods.dev/skills/jggomez/expert-ai-developer-skills/ui-ux-designer)
Your own site
<a href="https://agentmods.dev/skills/jggomez/expert-ai-developer-skills/ui-ux-designer"><img src="https://agentmods.dev/badge/skills/jggomez/expert-ai-developer-skills/ui-ux-designer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ui-ux-designer

Your own site · 80×15
<a href="https://agentmods.dev/skills/jggomez/expert-ai-developer-skills/ui-ux-designer"><img src="https://agentmods.dev/badge/skills/jggomez/expert-ai-developer-skills/ui-ux-designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,484 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00071 $0.01484
Opus 5.5 $0.00028 $0.00594
Sonnet 5.5 $0.00014 $0.00297
Haiku 4.5 $0.00007 $0.00148

Measured today against content hash f4083a203cc8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ui-ux-designer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/antigravity/python-backend/skills/ui-ux-designer/SKILL.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

UI/UX Designer & Design Systems Skill

Overview

This skill governs UI/UX design systems using the official Google Labs / Google Stitch DESIGN.md (google-labs-code/design.md) 2-layer specification. It maintains a single concise project-wide root DESIGN.md (<= 110 lines) alongside ultra-compact feature UI deltas (the ## Design section of the single discovery file docs/<feature-name>/spec.md, <= 30 lines) so visual tokens, WCAG 2.1 AA accessibility, and component states remain deterministic without 200-line per-feature boilerplate.

When to Use

Capability-Gated Trigger Rules

  • INVOKE ONLY IF UI screens/components are created or modified AND root DESIGN.md is missing or new visual tokens, layouts, or screen states are introduced.
  • SKIP for backend/APIs, data pipelines, CLIs, SQL, refactors, or minor UI tweaks already covered by root DESIGN.md.
  • Delegate Elsewhere: Backend/API contracts -> senior-architect-engineering; production widget/CSS code -> code-implementer or flutter-implementer; automated UI/E2E runs -> qa-tester.

Process: The Standard design.md Lifecycle

  1. Inspect Root DESIGN.md (<= 110 lines):
    • Check if root DESIGN.md (or legacy design.md / docs/design/) exists.
    • If missing: Author root DESIGN.md (<= 110 lines) from references/design-md-template.md following the Google 2-layer spec:
      • Layer 1 (Machine-Readable YAML Frontmatter): name, version, colors (primary, surface, text, error, etc.), typography (font_sans, font_mono, scale), rounded, spacing, and components using {colors.primary} token references.
      • Layer 2 (8 Concise Sections): ## Overview, ## Colors, ## Typography, ## Layout, ## Elevation & Depth, ## Shapes, ## Components, ## Do's and Don'ts.
    • If present: Reuse existing tokens; append new global tokens/components in-place only when genuinely needed.
  2. Author Optional Feature UI Delta (## Design in docs/<feature-name>/spec.md, <= 30 lines):
    • Fill ## Design ONLY when the feature introduces net-new screen layouts, user flows, or interactive states. If spec.md is missing, create it from the 3-heading template (## Product, ## Design, ## Architecture); edit ONLY ## Design.
    • Reference root DESIGN.md tokens ({colors.primary}, {spacing.md}) directly—never duplicate full color/typography tables per feature.

Read the full file on GitHub · 57 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 57 lines · 71 tokens per session scan A f4083a203cc8

Subscribe to this mod's changes

ui-ux-designer is a skill published in the GitHub repository jggomez/expert-ai-developer-skills (30 stars, last pushed yesterday), licensed Apache-2.0. It adds 71 tokens to every session and 1,484 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-06.

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