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mockup-sandbox

Create and preview web UI components in an isolated Vite development server.

2|Updated Mar 12, 2026
Search Tags:#design system#prototyping#frontend development#ui design#web components#live preview
One-click install
npx skills add https://github.com/patriotnewsactivism/Casebuddy-AI-Law-Partner --skill mockup-sandbox-patriotnewsactivism
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mockup-sandbox
Source: https://github.com/patriotnewsactivism/Casebuddy-AI-Law-Partner/tree/main/.local/skills/mockup-sandbox
Command: npx skills add https://github.com/patriotnewsactivism/Casebuddy-AI-Law-Partner --skill mockup-sandbox-patriotnewsactivism

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill allows you to rapidly create, preview, and iterate on web UI content directly on the canvas, providing a live, interactive environment for design and prototyping.

Core Features & Use Cases

  • Live Component Rendering: Display rendered HTML/CSS/React components on the canvas via iframes.
  • Prototyping & Iteration: Design, mockup, and compare different design variants side-by-side.
  • Responsive Previews: Show how components adapt to mobile, tablet, and desktop viewports.
  • State Previews: Visualize component states like loading, error, or empty.
  • Theme Comparison: Compare dark vs. light modes or different color schemes.
  • Use Case: You need to design a new pricing card component for a website. Activate this Skill to create the card, preview it on the canvas, and iterate on different visual styles until you're satisfied.

Quick Start

Use the mockup-sandbox skill to create a pricing card component on the canvas.

Frequently Asked Questions about mockup-sandbox

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I preview web components live on a canvas?▼

Live preview of web components allows you to render HTML/CSS/React elements via iframes on an isolated Vite development server. This enables direct visual feedback, interactive prototyping, and rapid iteration of UI design directly on the canvas.

What is the best way to compare UI design variants side-by-side?▼

Comparing UI design variants involves generating parallel component versions using subagents for design exploration. You can render multiple mockups simultaneously on the canvas to evaluate different visual styles, dark vs. light themes, or color schemes side-by-side.

How do I test responsive component behavior for mobile and tablet viewports?▼

Testing responsive component behavior uses live preview capabilities to render UI elements across mobile, tablet, and desktop viewports. This ensures your web components adapt correctly to different screen sizes within the isolated Vite development environment.

Can I visualize different component states like loading or error?▼

Visualizing component states allows you to preview loading, error, and empty conditions for web UI components. By rendering these specific states on the canvas, you can verify how your HTML/CSS/React elements handle various data conditions during prototyping.

Does the mockup-sandbox Skill require any external dependencies?▼

The mockup-sandbox Skill operates without external dependencies, relying solely on an isolated Vite development server environment. This allows you to immediately create, preview, and iterate on web UI content without installing additional packages.

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