MCP Mermaid 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.

	MCP Mermaid Generate Mermaid diagrams and charts with AI dynamically, exporting to SVG, PNG, base64, file, or shareable URLs. Unverified stdio (local) No auth TypeScript	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	TypeScript	TypeScript
Transport	stdio (local)	stdio (local)
Auth	None	API key
GitHub stars	588	2.8k
Last commit	1 month ago	1 month ago
Verified
Actively maintained
Install	`npx -y mcp-mermaid`	`npx @jpisnice/shadcn-ui-mcp-server`
Repo	Open	Open

Verdict

Pick MCP Mermaid if you want zero-setup with no API key.

Pick Shadcn UI v4 MCP Server if you prefer the more popular, battle-tested option, and you need the broadest set of tools.

Add MCP Mermaid

Install / run

npx -y mcp-mermaid

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

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

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

MCP Mermaid or Shadcn UI v4 MCP Server — which is better?

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

Can I use both MCP Mermaid 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 MCP Mermaid 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 MCP Mermaid →View Shadcn UI v4 MCP Server →More comparisons →