Excaliwow vs Ovellum

In-depth architectural comparison of the Excaliwow and Ovellum 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

O

Choose Ovellum 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 Ovellum Details

Feature & Specification Comparison

Specification	Excaliwow Developer Tools	O Ovellum Developer Tools
Summary	Create, read, render, organize, and safely edit persistent Excalidraw diagrams with AI agents.	Docs for TypeScript/JS that AI agents can read and safely edit, surviving regeneration.
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": {
    "ovellum": {
      "command": "npx",
      "args": [
        "-y",
        "ovellum"
      ]
    }
  }
}

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