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mcp/harbor
Grok

ProtoJoint for Grok

ai.protojoint/protojoint

Browser CAD for AI: model parts, add joints, export STEP or STL, or robots as URDF, SDF and MJCF

client:Grok transport:streamable-http

Install ProtoJoint in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "protojoint": {
      "type": "http",
      "url": "https://protojoint.ai/mcp"
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

ProtoJoint in other clients

ProtoJoint MCP server