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Mermaid · peng-shawn

npm

A Model Context Protocol (MCP) server that converts Mermaid diagrams to PNG images

Works with: Claude Code, Cursor, Claude Desktop, Codex CLI, Gemini CLI, Cline, Windsurf, VS Code

Category: Design — see all ranked ›

Install (Claude Code):

claude mcp add ermaid---peng-shawn -- npx -y @peng-shawn/mermaid-mcp-server
deep

“Four example calls with real Mermaid source; FAQ concedes Desktop renders it already.”

Security audit

scanned 2026-07-30

Every finding is shown in full. A licence adds the detail needed to act on it — which advisory, what the install script does, the version that fixes it.

No known advisoriesclearchecked against OSV for 0.2.0
Drives a browserfrom declared dependencies
Can carry remote content into your agentunlock detail
No build provenanceno attestation — the published artifact cannot be traced to its source

1 finding here has detail behind a licence. You can see it exists above, free, permanently — Pro tells you what third-party content it can pull into your agent.

Unlock the fix — $6/mo ›or check your whole config free with npx tashan-cli doctor

npm ↗  ·  source ↗  ·  pkg:@peng-shawn/mermaid-mcp-server

Already running this? npx tashan-cli doctor checks your whole config against the Index — how it works ›