frontend-ui

frontend-ui is a skill for Claude Code, Codex from J-StaR-Films-Studios/VibeCode-Protocol-Suite. It costs 47 tokens per session (595 once invoked), scanned A, original, ISC.

A skill for designing web and mobile interfaces, prototypes, and distinctive user experiences. It also covers UI guidance, evidence-based web narratives, and tools such as 21st.dev, Stitch, and Figma.

In plain words
What is it for?
Use it for web or mobile UI design, prototypes, reference-based experiences, UX decisions, and work involving Figma or similar design tools.
Why use it?
It helps turn product ideas or references into clearer interface designs and implementation direction.

Skill for Claude CodeCodex

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

Good fit Use it for web or mobile UI design, prototypes, reference-based experiences, UX decisions, and work involving Figma or similar design tools.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/j-star-films-studios/vibecode-protocol-suite/frontend-ui
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 J-StaR-Films-Studios/VibeCode-Protocol-Suite --skill frontend-ui
Clone the repo
git clone --depth 1 https://github.com/J-StaR-Films-Studios/VibeCode-Protocol-Suite

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 frontend-ui

README.md
[![agentmods](https://agentmods.dev/badge/skills/j-star-films-studios/vibecode-protocol-suite/frontend-ui/github.svg)](https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/frontend-ui)
Your own site
<a href="https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/frontend-ui"><img src="https://agentmods.dev/badge/skills/j-star-films-studios/vibecode-protocol-suite/frontend-ui/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 frontend-ui

Your own site · 80×15
<a href="https://agentmods.dev/skills/j-star-films-studios/vibecode-protocol-suite/frontend-ui"><img src="https://agentmods.dev/badge/skills/j-star-films-studios/vibecode-protocol-suite/frontend-ui.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 595 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00047 $0.00595
Opus 5 $0.00023 $0.00298
Sonnet 5 $0.00009 $0.00119
Haiku 4.5 $0.00005 $0.00060

Measured 6d ago against content hash 26aa35feb1dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

frontend-ui 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 6d ago.

The scan reads SKILL.md. This mod also ships 5 executable files (21st-dev-components/scripts/_shared.mjs, 21st-dev-components/scripts/build-manual-handoff-template.mjs, 21st-dev-components/scripts/fetch-21st-source.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

assets/.agent/skills/frontend-ui/SKILL.md · 29 lines

What it actually says

Frontend UI Suite

Design systems, interactive component libraries, throwaway prototyping patterns, creative WebGL experiences, and responsive UI guidelines.

Sub-Skills

Sub-Skill Purpose Path
prototyping-variants Two-branch throwaway prototyping: Logic Simulator HTML demo & in-app UI variant switch bar prototyping-variants/SKILL.md
story-engineer Evidence-backed case-study and project-history narratives story-engineer/SKILL.md
creative-web-development Concept direction, experience architecture, motion, Canvas, WebGL, Three.js, and GLSL creative-web-development/SKILL.md
frontend-design Foundational frontend design principles and typography frontend-design/SKILL.md
ui-ux-pro-max High-end visual styling, animations, and micro-interactions ui-ux-pro-max/SKILL.md
21st-dev-components Modern UI component patterns from 21st.dev 21st-dev-components/SKILL.md
web-design-guidelines Usability, UX consistency, and accessibility standards web-design-guidelines/SKILL.md
building-native-ui React Native and Expo mobile UI development building-native-ui/SKILL.md
figma Figma asset inspection and translation to code figma/SKILL.md
stitch Component stitching and layout orchestration stitch/SKILL.md
component-analysis Auditing component composition and hierarchy component-analysis/SKILL.md
webapp-testing Playwright web application integration testing webapp-testing/SKILL.md
Files

What ships with it

60 files 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. 6d ago First seen · 29 lines · 47 tokens per session scan A 26aa35feb1dc

Subscribe to this mod's changes

frontend-ui is a skill published in the GitHub repository J-StaR-Films-Studios/VibeCode-Protocol-Suite (24 stars, last pushed 4d ago), licensed ISC. It adds 47 tokens to every session and 595 once invoked, about $0.0002 per session on Opus 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 2026-09-03.

Related

Other skills, from other repositories

ui-design

Unify product UI design, frontend implementation, and verification. Use when asked to design, redesign, build, or fix a web, desktop, or mobile interface; a page, dashboard, form, component, design system, responsive layout, accessibility, interface animation, or editable hero/banner/infographic within a product…

AnastasiyaW/codex-claude-code-config · 97 tokens

frontend-design

A design guide for building polished web interfaces such as pages, dashboards, forms, navigation, and reusable UI components. It covers HTML, CSS, JavaScript, and common frontend frameworks.

AnastasiyaW/codex-claude-code-config · 264 tokens

frontend-design-studio

Direct, design, implement, animate, critique, audit, polish, and deploy distinctive production frontend interfaces for websites, landing pages, web apps, dashboards, mobile concepts, and desktop shells. Use for new frontend builds, redesigns, bland or visually generic UI, messy interfaces, design systems, Vue Bits or…

TIKAZI/TIKAZ-AI-Skills · 126 tokens

frontend-design

Orchestrate product-aware frontend art direction, implementation, responsive QA, code impact analysis, and engineering handoff. Use for websites, landing pages, web apps, dashboards, mobile concepts, and desktop shells that need one coherent visual world and objective verification.

TIKAZI/TIKAZ-AI-Skills · 54 tokens

interaction-physics

Design and implement the motion layer of a UI — microinteractions, transitions, hover/press feedback, and animation timing/easing — as working CSS/JS plus a written animation spec. Use when the user says 'the app feels janky', 'animations feel off', 'make it feel smoother/snappier', 'add a transition', 'the modal just…

sanky369/vibe-building-skills · 138 tokens

design-foundation

Create or extract a design-token foundation — colors, typography, spacing, radii, shadows — as a real tokens file (CSS variables and/or Tailwind theme) plus a migration map from current hardcoded values. Use when the user says 'set up a design system', 'our styles are inconsistent', 'we have 50 shades of the same…

sanky369/vibe-building-skills · 151 tokens