How to install mcp-mermaid in Claude Code

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We found mcp-mermaid in the official MCP registry. Our automated check passed on Nov 7, 2026 (it confirms the server is published and reachable), but no one at CuratedMCP has reviewed its code, permissions or credentials handling. Check what it can access before you give it keys. Scan your machine free to see every MCP server you have installed.

Steps

1Install Node.js 18 or newer (for npx)
2Run the command below in your project folder
3Start Claude Code and run /mcp to confirm it's connected

Command

Run in your terminal

claude mcp add mermaid -- npx -y mcp-mermaid

Add --scope user to make it available in every project.

Install in other clients

Cursor Claude Desktop Windsurf Gemini CLI OpenAI Agents SDK

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