$ ~/registry/skill/anthropics-plugins-playground-skills-playground

SKILL

playground

Build single-file interactive HTML playgrounds with live preview and prompt export.

Stars

★ 32,159

Source

GitHub

Updated

2026-08-18

// securityLow risk

Prompt only, no code
Open source
Community-trusted· 32.2k

Running security audit…

Credentials
Network egress
Code execution
Data access
Supply chain

// install

Copy the install command and let the AI configure it · recommended for beginners

Please install the "playground" skill from askskill:
1. Download https://raw.githubusercontent.com/anthropics/claude-plugins-official/main/plugins/playground/skills/playground/SKILL.md
2. Save it as ~/.claude/skills/playground/SKILL.md
3. Reload skills and tell me it's ready

// download

Download SKILL.mdInstall manifest ↗

// examples

Design component style explorer

Prompt

Create a single-file HTML playground for a card component. Put controls for border radius, shadow, spacing, colors, and typography on the left, a live card preview on the right, and a copyable natural-language prompt at the bottom. Use a dark theme, include 3 presets, and avoid external dependencies.

Expected

A ready-to-open single HTML style explorer with live preview, presets, and prompt copying.

SQL query builder

Prompt

Build an educational HTML playground that lets users compose SELECT, WHERE, GROUP BY, and ORDER BY clauses with dropdowns and toggles. Show the live SQL on the right and a copyable prompt description at the bottom. Inline all CSS and JavaScript.

Expected

An interactive SQL explorer that builds queries through controls and generates a descriptive prompt.

Concept learning map

Prompt

Create a concept-map playground for outlining 'Introduction to Machine Learning.' Let users control learning depth, topic modules, prerequisites, and difficulty on the left, show a structured overview on the right, and generate a copyable study prompt at the bottom.

Expected

A visual learning explorer that adjusts scope and produces a clear study prompt.

// use cases

Turn complex options into a visual configurator

Developers or designers can use it when there are many parameters that are hard to describe in plain text. Users adjust controls, see instant results, and then copy the generated prompt back into the AI.

Build a data or query exploration tool

When you need to demonstrate SQL, APIs, pipelines, or regex-like structured inputs, this skill can generate a single-file HTML explorer with live feedback. It is useful for turning abstract combinations into an intuitive interface.

Map concepts, documents, or code structure

Product managers, researchers, or developers can use it for concept maps, document critique, or code structure views. Presets and interactive controls help users explore scope, differences, or relationships more quickly.

// docs

AI summary

The documentation explains what Playground Builder is for, when to use it, and how to construct one. A playground should be a self-contained single HTML file with interactive controls, live preview, and a copyable natural-language prompt output. It suggests choosing templates for design, data exploration, concept mapping, document critique, diff review, or code mapping, and emphasizes inline CSS/JS, instant updates, presets, dark theme, and a single shared state object.

Show full docs ▾

Playground Builder

A playground is a self-contained HTML file with interactive controls on one side, a live preview on the other, and a prompt output at the bottom with a copy button. The user adjusts controls, explores visually, then copies the generated prompt back into Claude.

When to use this skill

When the user asks for an interactive playground, explorer, or visual tool for a topic — especially when the input space is large, visual, or structural and hard to express as plain text.

How to use this skill

Identify the playground type from the user's request
Load the matching template from templates/:
- templates/design-playground.md — Visual design decisions (components, layouts, spacing, color, typography)
- templates/data-explorer.md — Data and query building (SQL, APIs, pipelines, regex)
- templates/concept-map.md — Learning and exploration (concept maps, knowledge gaps, scope mapping)
- templates/document-critique.md — Document review (suggestions with approve/reject/comment workflow)
- templates/diff-review.md — Code review (git diffs, commits, PRs with line-by-line commenting)
- templates/code-map.md — Codebase architecture (component relationships, data flow, layer diagrams)
Follow the template to build the playground. If the topic doesn't fit any template cleanly, use the one closest and adapt.
Open in browser. After writing the HTML file, run open <filename>.html to launch it in the user's default browser.

Core requirements (every playground)

Single HTML file. Inline all CSS and JS. No external dependencies.
Live preview. Updates instantly on every control change. No "Apply" button.
Prompt output. Natural language, not a value dump. Only mentions non-default choices. Includes enough context to act on without seeing the playground. Updates live.
Copy button. Clipboard copy with brief "Copied!" feedback.
Sensible defaults + presets. Looks good on first load. Include 3-5 named presets that snap all controls to a cohesive combination.
Dark theme. System font for UI, monospace for code/values. Minimal chrome.

State management pattern

Keep a single state object. Every control writes to it, every render reads from it.

const state = { /* all configurable values */ };

function updateAll() {
  renderPreview(); // update the visual
  updatePrompt();  // rebuild the prompt text
}
// Every control calls updateAll() on change

Prompt output pattern

function updatePrompt() {
  const parts = [];

  // Only mention non-default values
  if (state.borderRadius !== DEFAULTS.borderRadius) {
    parts.push(`border-radius of ${state.borderRadius}px`);
  }

  // Use qualitative language alongside numbers
  if (state.shadowBlur > 16) parts.push('a pronounced shadow');
  else if (state.shadowBlur > 0) parts.push('a subtle shadow');

  prompt.textContent = `Update the card to use ${parts.join(', ')}.`;
}

Common mistakes to avoid

Prompt output is just a value dump → write it as a natural instruction
Too many controls at once → group by concern, hide advanced in a collapsible section
Preview doesn't update instantly → every control change must trigger immediate re-render
No defaults or presets → starts empty or broken on load
External dependencies → if CDN is down, playground is dead
Prompt lacks context → include enough that it's actionable without the playground

// FAQ

What does this skill generate?

It generates a self-contained single HTML playground with interactive controls on the left, a live preview on the right, and a copyable prompt output at the bottom. It is meant for explorers, visual tools, and playgrounds.

What are the core requirements for a generated playground?

The docs require a single HTML file with inline CSS and JavaScript and no external dependencies. It should also include live preview, a copy button, sensible defaults, 3-5 presets, and a dark theme.

How do I open and use the generated file?

The documentation says the generated HTML file can be opened directly in a browser. The example workflow also mentions running open <filename>.html to launch it in the default browser.