reference_skills/anthropics-skills-web-artifacts-builder/SKILL.md
Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts.
npx skillsauth add nyosegawa/skills web-artifacts-builderInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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To build powerful frontend claude.ai artifacts, follow these steps:
scripts/init-artifact.shscripts/bundle-artifact.shStack: React 18 + TypeScript + Vite + Parcel (bundling) + Tailwind CSS + shadcn/ui
VERY IMPORTANT: To avoid what is often referred to as "AI slop", avoid using excessive centered layouts, purple gradients, uniform rounded corners, and Inter font.
Run the initialization script to create a new React project:
bash scripts/init-artifact.sh <project-name>
cd <project-name>
This creates a fully configured project with:
@/) configuredTo build the artifact, edit the generated files. See Common Development Tasks below for guidance.
To bundle the React app into a single HTML artifact:
bash scripts/bundle-artifact.sh
This creates bundle.html - a self-contained artifact with all JavaScript, CSS, and dependencies inlined. This file can be directly shared in Claude conversations as an artifact.
Requirements: Your project must have an index.html in the root directory.
What the script does:
.parcelrc config with path alias supportFinally, share the bundled HTML file in conversation with the user so they can view it as an artifact.
Note: This is a completely optional step. Only perform if necessary or requested.
To test/visualize the artifact, use available tools (including other Skills or built-in tools like Playwright or Puppeteer). In general, avoid testing the artifact upfront as it adds latency between the request and when the finished artifact can be seen. Test later, after presenting the artifact, if requested or if issues arise.
development
Analyzes Claude Code session transcripts to evaluate skill portfolio health — routing errors, attention competition between descriptions, and coverage gaps. Generates an interactive HTML report with per-skill health cards, competition matrix, attention budget analysis, and actionable patches. Unlike skill-creator which optimizes individual skills in isolation, skill-auditor optimizes the portfolio as a system, detecting cross-skill attention theft and cascade risks. Use when user says "audit my skills", "skill audit", "run skill-auditor", "analyze skill routing", "check skill competition", "portfolio health", "スキル監査", "スキルの精度を分析", "スキルルーティング分析".
tools
Build high-quality Remotion promo and intro videos for any app type (web, mobile, API/SDK, developer tool, AI product) using app-type blueprints, timeline patterns, and frame-capture QA. Use when users ask to create a product promo, teaser, app intro, UX flow video, or Remotion-based demo video.
tools
MCPサーバーの「Light版」を生成する。descriptionを1行に圧縮し、ベストプラクティスをAgent Skillとして分離する。Use when user asks to "MCP Light版を作って", "MCPを軽量化", "Light MCP", "mcp-light", "create light mcp", "compress mcp descriptions", "MCP description圧縮", or wants to reduce MCP tool definition token usage.
development
Gemini画像生成APIを使ってブログ記事やドキュメント用の図・イラストを生成する。Use when user asks to "画像生成", "図を作って", "generate image", "create diagram", "イラスト作って", "図示して", or wants to create visual assets for articles.