Agent skill

UI Dev

This skill MUST be used whenever the task involves UI development, renderer code changes, adding or modifying components, creating modals or dialogs, working with CSS styles, building new UI…

MITAuto-check passedFrontend & Design

Install UI Dev

skills CLI

$ npx skills add elirantutia/vibeyard --skill ui-dev -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install elirantutia/vibeyard ui-dev --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/elirantutia/vibeyard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/ui-dev .claude/skills/ui-dev && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "ui-dev" agent skill from https://github.com/elirantutia/vibeyard/tree/main/.claude/skills/ui-dev into .claude/skills/ui-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-dev", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/elirantutia/vibeyard/tree/main/.claude/skills/ui-dev

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add elirantutia/vibeyard --skill ui-dev -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install elirantutia/vibeyard ui-dev --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/elirantutia/vibeyard.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/ui-dev .agents/skills/ui-dev && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "ui-dev" agent skill from https://github.com/elirantutia/vibeyard/tree/main/.claude/skills/ui-dev into .agents/skills/ui-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-dev", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add elirantutia/vibeyard --skill ui-dev -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install elirantutia/vibeyard ui-dev --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/elirantutia/vibeyard.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/ui-dev .cursor/skills/ui-dev && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "ui-dev" agent skill from https://github.com/elirantutia/vibeyard/tree/main/.claude/skills/ui-dev into .cursor/skills/ui-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-dev", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/elirantutia/vibeyard.git --path .claude/skills/ui-dev

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add elirantutia/vibeyard --skill ui-dev -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install elirantutia/vibeyard ui-dev --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/elirantutia/vibeyard.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/ui-dev .gemini/skills/ui-dev && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "ui-dev" agent skill from https://github.com/elirantutia/vibeyard/tree/main/.claude/skills/ui-dev into .gemini/skills/ui-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-dev", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install elirantutia/vibeyard ui-dev

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add elirantutia/vibeyard --skill ui-dev -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/elirantutia/vibeyard.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/ui-dev .github/skills/ui-dev && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "ui-dev" agent skill from https://github.com/elirantutia/vibeyard/tree/main/.claude/skills/ui-dev into .github/skills/ui-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-dev", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add elirantutia/vibeyard --skill ui-dev -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install elirantutia/vibeyard ui-dev --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/elirantutia/vibeyard.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/ui-dev .opencode/skills/ui-dev && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "ui-dev" agent skill from https://github.com/elirantutia/vibeyard/tree/main/.claude/skills/ui-dev into .opencode/skills/ui-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ui-dev", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: ui-dev
GitHub stars: 1.4k
Token cost: ~2.4k tokens
SKILL.md length: 711 words
Files: 1
Skills in repo: 2
Repo updated: Sep 3, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

This skill MUST be used whenever the task involves UI development, renderer code changes, adding or modifying components, creating modals or dialogs, working with CSS styles, building new UI…

The user asks to add a button
SKILL.md covers Custom Dropdown / Select, Modals, Alert Banners and Buttons, plus 5 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Update the sidebar

What it does

UI Dev is an agent skill from elirantutia/vibeyard. This skill MUST be used whenever the task involves UI development, renderer code changes, adding or modifying components, creating modals or dialogs, working with CSS styles, building new UI features, or touching any file in src/renderer/. Use this skill when the user asks to "add a button", "create a modal", "add a dropdown", "update the sidebar", "style a component", "add a new UI feature", or any renderer/frontend work.

Its SKILL.md is about 2.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Frontend & Design. It works with TypeScript. The repository describes itself as: The IDE built for AI coding agents. The licence is MIT.

When your agent uses it

The user asks to add a button
Update the sidebar
Style a component
Add a new UI feature

Example prompts

“add a button”
“create a modal”
“add a dropdown”
“/ui-dev”

What it can do on your machine

Read from SKILL.md and the folder at commit 19bc19f. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript and css).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

UI Dev loads about 2.4k tokens when it runs. Until then it costs about 108 tokens; SKILL.md has 711 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~108
When it runs · the whole SKILL.md, loaded when a task matches: ~2.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from elirantutia/vibeyard at commit 19bc19f, republished under its MIT licence (© elirantutia). 711 words, ~2,350 tokens.

Download SKILL.mdSave it as .claude/skills/ui-dev/SKILL.md (or your agent's skills folder).

name: ui-dev
description: This skill MUST be used whenever the task involves UI development, renderer code changes, adding or modifying components, creating modals or dialogs, working with CSS styles, building new UI features, or touching any file in src/renderer/. Use this skill when the user asks to "add a button", "create a modal", "add a dropdown", "update the sidebar", "style a component", "add a new UI feature", or any renderer/frontend work.

UI Development Guide

This project uses vanilla TypeScript DOM manipulation — no framework. All UI lives in src/renderer/. Follow the patterns and reuse the components documented below.

Never use native <select>. Always use the custom select component:

typescript

import { createCustomSelect } from './components/custom-select';

const select = createCustomSelect('my-select', [
  { value: 'a', label: 'Option A' },
  { value: 'b', label: 'Option B' },
  { value: 'c', label: 'Disabled', disabled: true },
], 'a'); // default value

// select.getValue() — get current value
// select.destroy() — cleanup

File: src/renderer/components/custom-select.ts
CSS classes: .custom-select, .custom-select-trigger, .custom-select-dropdown, .custom-select-item
Supports keyboard navigation (Arrow keys, Enter, Escape, Tab)

Modals

Use showModal() for generic modals with form fields:

typescript

import { showModal, closeModal, setModalError } from './components/modal';

showModal('My Title', [
  { id: 'name', label: 'Name', type: 'text', placeholder: 'Enter name' },
  { id: 'option', label: 'Option', type: 'select', options: [...] },
  { id: 'enabled', label: 'Enable feature', type: 'checkbox' },
], (values) => {
  // values is Record<string, string>
  if (!values.name) {
    setModalError('name', 'Name is required');
    return;
  }
  // ... handle confirm
  closeModal();
});

File: src/renderer/components/modal.ts
Exports: showModal(), closeModal(), setModalError()
Supports field types: text, checkbox, select (uses custom select internally)
Supports field buttons (e.g., a "Browse" button next to a text input)
Keyboard: Enter to confirm, Escape to cancel

For specialized modals (complex layout, multi-pane, unique behavior), create a dedicated file in src/renderer/components/ following the existing pattern (e.g., preferences-modal.ts, usage-modal.ts).

Alert Banners

For in-context alerts shown above the terminal:

typescript

import { showAlertBanner, removeAlertBanner } from './components/alert-banner';

showAlertBanner({
  icon: '⚠️',
  message: 'Something happened',
  ctaLabel: 'Fix it',
  onCta: () => { /* handle action */ },
  dismissLabel: 'Dismiss',
  onDismiss: () => { removeAlertBanner(); },
});

File: src/renderer/components/alert-banner.ts
CSS classes: .insight-alert, .insight-alert-icon, .insight-alert-message, .insight-alert-cta, .insight-alert-dismiss
Use .insight-alert-info variant for informational (blue) alerts

Buttons

Use existing CSS classes — do not create new button styles:

Class	Use for
`.btn-primary`	Canonical primary/CTA button (accent fill, `--accent-dim` hover, `--radius-md`). Use for every solid-accent action. Defined in `base.css`.
`.btn-secondary`	Canonical secondary button (bordered, neutral `--bg-primary` fill, `--bg-hover` hover, same `--radius-md` + size as primary, normal weight). Use for Cancel and every neutral action. Add `.danger` for destructive (red). Defined in `base.css`.
`.btn-sm` / `.btn-xs`	Compact size modifiers — pair with `.btn-primary` or `.btn-secondary`. `btn-sm` for dense card/toolbar rows; `btn-xs` for tight github rows. Single-class so a context's geometry class still wins.
`.icon-btn`	Small 26×26px icon buttons (tab bar, sidebar actions)
`.modal-field-btn`	Inline button next to a modal field (e.g., "Browse")
`.config-section-add-btn`	Add button in config sections

A modal footer is .btn-secondary (Cancel) next to .btn-primary (Confirm) — they share size and corner radius so the pair lines up.

For split buttons (main + chevron), add .btn-primary/.btn-secondary plus the context's geometry-only class (e.g. .widget-github-fix-main, .team-card-chat-dropdown) which is defined later in source order so it correctly overrides the corner-radius/padding without redefining the fill. The same applies to structural-only classes kept on consolidated buttons (.team-card-btn, .widget-team-card-btn, .project-tab-toolbar-btn for its .active state, .share-btn for its .hidden toggle).

Badges

Class	Use for
`.scope-badge.user` / `.scope-badge.project`	Scope indicators
`.readiness-badge`	Status badges
`.git-file-badge`	Git status letter indicators
`.file-viewer-area-badge`	Git area badges (staged, working, etc.)

CSS Theming

Never hardcode colors. Always use CSS variables from src/renderer/styles/base.css:

css

/* Backgrounds */
var(--bg-primary)    /* #000000 — main background */
var(--bg-secondary)  /* #0a0a0a — secondary background */
var(--bg-tertiary)   /* #1a1a1a — tertiary / elevated surfaces */
var(--bg-hover)      /* #222222 — hover state */

/* Text */
var(--text-primary)  /* #e0e0e0 */
var(--text-secondary) /* #a0a0b0 */
var(--text-muted)    /* #606070 */

/* Accents & borders */
var(--accent)        /* #e94560 — primary accent (red) */
var(--accent-dim)    /* #c73e55 */
var(--border)        /* #333333 */
var(--bookmark)      /* #e8a317 */

Semantic status colors (these are not CSS variables — use the hex values directly):

Working/Active: var(--accent) with pulse animation
Waiting: #f4b400 (yellow)
Completed/Success: #34a853 (green)
Input: #e67e22 (orange)
Info: #4285f4 (blue)
Idle: var(--text-muted)

Show full SKILL.md (309 more words)Show less

Styling Conventions

Class naming: .component-child pattern (e.g., .modal-field, .tab-status)
State modifiers: .active, .disabled, .hidden, .focused (e.g., .tab-item.active)
Border radius: 4px standard, 2-3px small, 8px rounded/pills, 50% circular
Transitions: 0.15s for hover/focus states
Font: System sans-serif for UI, monospace (JetBrains Mono, Fira Code, etc.) for code/terminal
Font sizes: 9-13px for UI elements, 13px base
Scrollbars: Use webkit custom scrollbar (6px width, var(--border) thumb, 3px radius)

Component Architecture Patterns

Factory functions

Components use factory functions that return an instance object:

typescript

export function createMyComponent(id: string, options: Options): MyComponentInstance {
  const el = document.createElement('div');
  // ... build DOM ...
  return {
    element: el,
    getValue() { /* ... */ },
    destroy() { /* cleanup listeners, remove DOM */ },
  };
}

State subscriptions

Use appState event emitter for reactive updates:

typescript

import { appState } from '../state';
appState.on('session-changed', (sessionId) => { /* update UI */ });

Cleanup

Always provide a destroy() method that removes event listeners and DOM nodes. This prevents memory leaks when sessions/tabs are closed.

DOM creation

Prefer document.createElement() + property assignment over innerHTML
When using innerHTML, always escape user content with esc() from src/renderer/components/dom-utils.ts
Use classList.toggle() / classList.add() / classList.remove() for conditional classes
Use element.dataset.* for data attributes

Text selection preservation

Components that re-render periodically (timers, event-driven updates) must check for active text selection before wiping the DOM. Destroying DOM nodes while the user is selecting text clears their selection. Guard re-renders like this:

typescript

const sel = window.getSelection();
if (sel && sel.rangeCount > 0 && !sel.isCollapsed && container.contains(sel.anchorNode)) {
  return; // skip render — user is selecting text
}

Also ensure clickable containers that hold selectable text use stopPropagation() on the text element to prevent click-to-select from triggering the parent's click handler, and set user-select: text; cursor: text; in CSS.

CSS File Organization

Add styles to the appropriate existing CSS file — do not create new CSS files unless introducing a wholly new component area:

File	Contents
`styles/base.css`	CSS variables, resets, global styles
`styles/modals.css`	Modal, custom select, config sections, path autocomplete
`styles/tabs.css`	Tab bar, icon buttons, context menus
`styles/sidebar.css`	Sidebar, project list, update banner
`styles/terminal.css`	Terminal pane, status bar, exit overlay
`styles/alerts.css`	Alert banners, insight alerts, readiness badges
`styles/search.css`	Search bar, toggle buttons, match highlighting
`styles/dialogs.css`	Help dialog
`styles/preferences.css`	Preferences modal, sections
`styles/session-history.css`	Session history list
`styles/file-viewer.css`	File viewer, diff display
`styles/git-panel.css`	Git panel, worktree selector
`styles/mcp-inspector.css`	MCP inspector pane
`styles/session-inspector.css`	Session inspector panel

Files

Just SKILL.md in .claude/skills/ui-dev of elirantutia/vibeyard.

Open the folder on GitHubat commit 19bc19f

Compare with similar skills

UI Dev next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

UI Dev compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
UI Dev this skillelirantutia/vibeyard	1.4k	—	~2.4k	Automated safety check: Pass	MIT	1 mo ago
Web Artifacts Builderanthropics/skills	180k	41 repos	~769	Automated safety check: Pass	Apache-2.0	today
Ink Tui Wizardnovuhq/novu	40k	—	~1.9k	Automated safety check: Pass	MIT	today
Frontend Module Standardssiteboon/claudecodeui	14k	—	~2.6k	Automated safety check: Pass	AGPL-3.0	yesterday
Dify Component Writing Guidelanggenius/dify	158k	—	~626	Automated safety check: Pass	Custom licence	today
React Frontend Development Guidelinesdiet103/claude-code-infrastructure-showcase	10k	2 repos	~2.9k	Automated safety check: Pass	MIT	2 mo ago

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Questions about UI Dev

What does UI Dev do?

This skill MUST be used whenever the task involves UI development, renderer code changes, adding or modifying components, creating modals or dialogs, working with CSS styles, building new UI…. UI Dev is an agent skill from elirantutia/vibeyard. This skill MUST be used whenever the task involves UI development, renderer code changes, adding or modifying components, creating modals or dialogs, working with CSS styles, building new UI features, or touching any file in src/renderer/.

When should I use UI Dev?

UI Dev fits situations like: the user asks to add a button; update the sidebar; style a component; add a new UI feature.

How do I install UI Dev in Claude Code?

Run `npx skills add elirantutia/vibeyard --skill ui-dev -a claude-code`. Or copy the skill folder (.claude/skills/ui-dev in elirantutia/vibeyard) into .claude/skills/ui-dev in your project. Claude Code loads it when a task matches its description.

How do I install UI Dev in Codex?

Run `npx skills add elirantutia/vibeyard --skill ui-dev -a codex`. Or copy the skill folder (.claude/skills/ui-dev in elirantutia/vibeyard) into .agents/skills/ui-dev in your project. Codex loads it when a task matches its description.

Can I use UI Dev in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add elirantutia/vibeyard --skill ui-dev -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ui-dev, .gemini/skills/ui-dev, .github/skills/ui-dev and .opencode/skills/ui-dev in your project.

What does UI Dev need to run?

SKILL.md names no scripts, command-line tools or credentials: UI Dev is instructions for the agent only.

Does UI Dev access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is UI Dev safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does UI Dev use?

UI Dev is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does UI Dev use?

About 2.4k tokens (SKILL.md is roughly 9.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to UI Dev?

Skills that share tags, products or a category with UI Dev: Web Artifacts Builder (anthropics/skills, 180k stars), Ink Tui Wizard (novuhq/novu, 40k stars), Frontend Module Standards (siteboon/claudecodeui, 14k stars) and Dify Component Writing Guide (langgenius/dify, 158k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains UI Dev?

elirantutia (a GitHub user) maintains it in elirantutia/vibeyard, which has 1,387 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on September 3, 2026.

Source: elirantutia/vibeyard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install UI Dev

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

UI Development Guide

Custom Dropdown / Select

Modals

Alert Banners

Buttons

Badges

CSS Theming

Styling Conventions

Component Architecture Patterns

Factory functions

State subscriptions

Cleanup

DOM creation

Text selection preservation

CSS File Organization

Files

Compare with similar skills

Similar skills

Web Artifacts Builder

Ink Tui Wizard

Frontend Module Standards

Dify Component Writing Guide

React Frontend Development Guidelines

Formik Form Patterns

More from elirantutia/vibeyard

Add npm Dependency

Related

Questions about UI Dev