Claude Mermaid MCP Server

by veelenga• 221•• Scanned•Claim this listing•Request removal
Design & Mediaclaude codemcp server

MCP Server to previewing mermaid diagrams with live reload

Claude Mermaid is an open-source mcp server by veelenga, written mainly in TypeScript, with 221 GitHub stars and the MIT license. Its code was last updated Oct 30, 2026.

Scan summary: scanned Nov 5, 2026 at commit 54666e0. Seen able to connect to the internet. Scan policy

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Scanned
Full scan at 54666e0 · Nov 5, 2026
Scanned Builds Boots Reproducible
Static code scanwarn
Secrets scanpass
Dependency audit0 known vulnerabilitiespass
Manifestnonewarn
Buildpass
Boot & handshake2 toolspass
Network egresswarn
Reproducible (×3)pass

Findings (2)

  • medium
    Install contacted hosts other than package registries
    storage.googleapis.com
  • low
    No manifest declaring network access and environment variables (agent.json)

Network activity

During install
registry.npmjs.orgstorage.googleapis.com
While running
No connections

Tools exposed (2)

  • mermaid_preview

    Render a Mermaid diagram and open it in browser with live reload. Takes Mermaid diagram code as input and generates a live preview. Supports themes (default, forest, dark, neutral), custom backgrounds, dimensions, and quality scaling. The diagram will auto-refresh when updated. Use mermaid_save to s

  • mermaid_save

    Save the current live Mermaid diagram to a file path. This copies the already-rendered diagram from the live preview to the specified location. Use this after tuning your diagram with mermaid_preview.

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