Is Claude Mermaid safe to use?

Claude Mermaid has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install Claude Mermaid?

Claude Mermaid supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with Claude Mermaid?

Claude Mermaid is compatible with Claude Desktop, Cursor, Claude Code, and most MCP clients that support stdio transport. It uses stdio and sse and http transport.

Is Claude Mermaid actively maintained?

Claude Mermaid is actively maintained — last commit was 0 days ago. It has 117 GitHub stars.

Claude Mermaid

MCP Server to previewing mermaid diagrams with live reload

ActiveNot tested

AI / ML

★ 117npm GitHub

61No CVEsactiveMIT

Quick Install

{
  "mcpServers": {
    "mermaid": {
      "command": "claude-mermaid"
    }
  }
}

Setup guide

Should you use this server?

MCP Server to previewing mermaid diagrams with live reload

✓

Is it safe?

No known CVEs for claude-mermaid.

No authentication — any process on your machine can connect.

MIT. View license →

✓

Is it maintained?

Last commit 0 days ago. 117 stars.

Will it work with my client?

Transport: stdio, sse, http. Works with Claude Desktop, Cursor, Claude Code, and most MCP clients.

Test This Server

This server supports HTTP transport. Be the first to test it — help the community know if it works.

Score Breakdown

MCPpedia Score

Click each category to see evidence

61B

Last scored 12h ago

How we score →

Security

23/30

No known vulnerabilities.

✓

Known CVEs — No known CVEs for claude-mermaidcheck OSV.dev

○

Tool safety — No tools to analyze

○

Tool poisoning — No tools to analyze

○

Injection vectors — No tools to analyze

✓

Tool stability — Tool definitions stable

○

Dependency health — found on deps.dev, recently updated

✓

License — License: MIT

○

Authentication — No authentication required

Help improve this page

This server is missing a description. Tools and install config are also missing.If you've used it, help the community.

Add information

○

Repository — active repo

CVEs checked daily via OSV.dev. Score algorithm is open source.

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[![MCPpedia Score](https://mcppedia.org/api/badge/claude-mermaid)](https://mcppedia.org/s/claude-mermaid)

Reviews

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Frequently Asked Questions

Is Claude Mermaid safe to use?: Claude Mermaid has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Claude Mermaid?: Claude Mermaid supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with Claude Mermaid?: Claude Mermaid is compatible with Claude Desktop, Cursor, Claude Code, and most MCP clients that support stdio transport. It uses stdio and sse and http transport.
Is Claude Mermaid actively maintained?: Claude Mermaid is actively maintained — last commit was 0 days ago. It has 117 GitHub stars.

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Discussion

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Has anyone used this with Cursor?How do you handle auth?Any alternatives?