UISandbox MCP Server: Install & Setup

Install UISandbox in Claude Code

Claude Code

claude mcp add uisandbox -- npx -y uisandbox-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "uisandbox": {
      "command": "npx",
      "args": [
        "-y",
        "uisandbox-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the UISandbox MCP server do?

Play with your app's design in the browser: load a build, turn the knobs, export the code.

Is the UISandbox MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does UISandbox run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add UISandbox to Claude Code?

Run: claude mcp add uisandbox -- npx -y uisandbox-mcp

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