Koskamo

UISandbox MCP

An MCP server that allows agents to load web app builds or UI kits into the UISandbox browser tool. It enables interactive design tuning via knobs for CSS properties and exports the resulting design system, patches, or tokens back to the agent without sending data to external servers.

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Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

UISandbox MCP logo, by IdeelabCommunity listingLocal stdioSource reviewed; not executedPublished by Ideelab
Vendor documentation

What you can do with it

  • Load a running dev server or public repo into the sandbox
  • Tune CSS properties like color, font, and spacing via knobs
  • Export design systems and SKILL.md files for AI agents
  • Generate patches for source files based on design changes

Source and maintenance

Community listingRegistry 0.5.3
mcp-registry: io.github.Ideelab/uisandbox@0.5.3Source repositoryProject website
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

uisandbox-mcp 0.5.3

npm
uisandbox-mcp package definition
{
  "version": "0.5.3",
  "transport": "stdio",
  "identifier": "uisandbox-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "UISANDBOX_URL",
      "format": "string",
      "description": "The app the render tools drive (verify, screenshot). Default https://uisandbox.org"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "uisandbox-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "uisandbox-mcp@0.5.3"
      ],
      "env": {
        "UISANDBOX_URL": "<YOUR_UISANDBOX_URL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "uisandbox-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "uisandbox-mcp@0.5.3"
      ],
      "env": {
        "UISANDBOX_URL": "<YOUR_UISANDBOX_URL>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "uisandbox-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "uisandbox-mcp@0.5.3"
      ],
      "env": {
        "UISANDBOX_URL": "<YOUR_UISANDBOX_URL>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "uisandbox-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "uisandbox-mcp@0.5.3"
      ],
      "env": {
        "UISANDBOX_URL": "<YOUR_UISANDBOX_URL>"
      }
    }
  }
}

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