FreeCAD MCP vs Onshape

In-depth architectural comparison of the FreeCAD MCP and Onshape 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 FreeCAD MCP when:

• You need dedicated capabilities in the Architecture & Design domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: 30+ FreeCAD operation tools, Parametric, PartDesign, Sketch, Draft, Boolean, and transform workflows, Mesh inspection and geometry checks.

Explore FreeCAD MCP Details

Choose Onshape when:

• You need dedicated capabilities in the Architecture & Design domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Manage Onshape documents, workspaces, versions, and elements, Create sketches and solid modeling features, Build and inspect assemblies.

Feature & Specification Comparison

Specification	FreeCAD MCP Architecture & Design	Onshape Architecture & Design
Summary	Control FreeCAD from Claude — 3D modeling, PartDesign, CAM toolpaths, and more via 30+ tools.	Drive Onshape CAD from an assistant: documents, sketches, solid features, assemblies and exports.
Category & Scope	Architecture & Design	Architecture & Design

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

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

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