Lambdacad MCP vs Onshape

In-depth architectural comparison of the Lambdacad 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 Lambdacad 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: 128 MCP tools for 2D drafting and 3D solids, Pure AutoLISP file bridge without COM or plugins, Batch operations with one round trip and undo group.

Explore Lambdacad 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	Lambdacad MCP Architecture & Design	Onshape Architecture & Design
Summary	AI drafting in BricsCAD on Linux: 100 tools, 2D + 3D solids, via a pure AutoLISP bridge	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": {
    "lambdacad-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "lambdacad-mcp"
      ]
    }
  }
}

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

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