build123d-mcp vs BlenderMCP

A side-by-side comparison of two Design & Media servers — tools, transport, auth, maintenance, and copy-paste config for each.

	build123d-mcp Exposes build123d CAD operations as MCP tools so AI assistants can build, inspect, and iterate on 3D geometry interactively. Unverified stdio (local) No auth Python	BlenderMCP Control Blender from Claude and other LLMs for prompt-assisted 3D modeling, scene creation, and asset generation. Unverified stdio (local) No auth Python
Category	Design & Media	Design & Media
Language	Python	Python
Transport	stdio (local)	stdio (local)
Auth	None	None
GitHub stars	25	23k
Last commit	2 days ago	16 days ago
Verified
Actively maintained
Install	`pip install build123d-mcp`	`uvx blender-mcp`
Repo	Open	Open

Verdict

Pick build123d-mcp if you need the broadest set of tools.

Pick BlenderMCP if you prefer the more popular, battle-tested option.

Add build123d-mcp

Install / run

pip install build123d-mcp

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "build123d-mcp": {
      "command": "uv",
      "args": [
        "tool",
        "run",
        "--python",
        "3.12",
        "build123d-mcp@latest"
      ]
    }
  }
}

Add BlenderMCP

Install / run

uvx blender-mcp

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "blendermcp": {
      "command": "uvx",
      "args": [
        "blender-mcp"
      ]
    }
  }
}

Requires `uv` (the Python package runner). Install it from https://docs.astral.sh/uv/ if `uvx` is not found.

FAQ

build123d-mcp or BlenderMCP — which is better?

Pick build123d-mcp if you need the broadest set of tools. Pick BlenderMCP if you prefer the more popular, battle-tested option.

Can I use both build123d-mcp and BlenderMCP?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do build123d-mcp and BlenderMCP work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View build123d-mcp →View BlenderMCP →More comparisons →