Excaliwow vs Umlout

In-depth architectural comparison of the Excaliwow and Umlout MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Excaliwow when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Excaliwow Details

Choose Umlout when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Umlout Details

Feature & Specification Comparison

Specification	Excaliwow Developer Tools	Umlout Developer Tools
Summary	Create, read, render, organize, and safely edit persistent Excalidraw diagrams with AI agents.	Create and edit UML, flowchart, wireframe and sequence diagrams on an Umlout whiteboard.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "excaliwow": {
      "command": "npx",
      "args": [
        "-y",
        "@excaliwow/mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "umlout": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://www.umlout.com/mcp/sse",
        "--header",
        "Authorization: Bearer YOUR_API_KEY"
      ]
    }
  }
}

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