UISandbox MCP Server

What the code does

We read the source, 1 d ago · rules ccca72095570

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

  try { spawn(cmd[0]!, cmd.slice(1), { stdio: 'ignore', detached: true }).unref() } catch { /* the URL is returned anyway */ }

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

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

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

[mcp_servers.uisandbox]
command = "npx"
args = ["-y", "uisandbox-mcp"]

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

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

This one needs environment variables set before it will start: UISANDBOX_URL (The app the render tools drive (verify, screenshot). Default https://uisandbox.org). The author declared them in the registry entry; get the values from the project itself.