build123d-mcp vs Shadcn UI v4 MCP Server

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	Shadcn UI v4 MCP Server Give AI assistants full access to shadcn/ui v4 components, blocks, demos, and metadata across React, Svelte, Vue, and React Native. Unverified stdio (local) API key TypeScript
Category	Design & Media	Design & Media
Language	Python	TypeScript
Transport	stdio (local)	stdio (local)
Auth	None	API key
GitHub stars	25	2.8k
Last commit	2 days ago	1 month ago
Verified
Actively maintained
Install	`pip install build123d-mcp`	`npx @jpisnice/shadcn-ui-mcp-server`
Repo	Open	Open

Verdict

Pick build123d-mcp if you want zero-setup with no API key, and you need the broadest set of tools.

Pick Shadcn UI v4 MCP Server 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 Shadcn UI v4 MCP Server

Install / run

npx @jpisnice/shadcn-ui-mcp-server

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

{
  "mcpServers": {
    "shadcn-ui-v4-mcp-server": {
      "command": "npx",
      "args": [
        "@jpisnice/shadcn-ui-mcp-server",
        "--github-api-key",
        "ghp_your_token_here"
      ]
    }
  }
}

FAQ

build123d-mcp or Shadcn UI v4 MCP Server — which is better?

Pick build123d-mcp if you want zero-setup with no API key, and you need the broadest set of tools. Pick Shadcn UI v4 MCP Server if you prefer the more popular, battle-tested option.

Can I use both build123d-mcp and Shadcn UI v4 MCP Server?

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 Shadcn UI v4 MCP Server work with Claude, Cursor and Windsurf?

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

View build123d-mcp →View Shadcn UI v4 MCP Server →More comparisons →