LocalFree

Umbriel MCP server

ObscuritySRL/umbriel

See and drive a whole Windows machine from Bun — apps, input, screen, OCR, registry, OS — via MCP.

3 GitHub stars1 forks299 npm downloads / month
Source code

Install Umbriel in Claude Code

Claude Code
claude mcp add umbriel -- npx -y umbriel
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "umbriel": {
      "command": "npx",
      "args": [
        "-y",
        "umbriel"
      ]
    }
  }
}

Frequently asked questions

What does the Umbriel MCP server do?

See and drive a whole Windows machine from Bun — apps, input, screen, OCR, registry, OS — via MCP.

Is the Umbriel 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 Umbriel run locally or remotely?

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

How do I add Umbriel to Claude Code?

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

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