mermaid-mcp

Fast Mermaid diagram validation and rendering (PNG/SVG) using jsdom and sharp, no Chromium needed.

→ oleksii-honchar/mermaid-mcp · listed on glama

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// key findings

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configLOG_LEVEL— Structured logging JSON logs to stderr, debug level via env var

configMCP_MAX_BODY_SIZE— 10485760 Maximum request body size in bytes (10 MB)

configMCP_PORT— 8080 npm start

configMERMAID_BACKGROUND_COLOR— transparent Default background color for PNG rendering (CSS color value)

configMERMAID_DEFAULT_FORMAT— png Default output format (png or svg)

configMERMAID_SCALE— 1 Render scale factor

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 3 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/oleksii-honchar-mermaid-mcp-87hnt2)](https://m8ven.ai/mcp/oleksii-honchar-mermaid-mcp-87hnt2)

commit: a2672a874e1125c3e2fbcde341d6ca4c8dab1c59

code hash: d2b41f41aef648046edcc5aae3a75b9a3283467924f6bf99ce46dd6ad5dc0bd1

verified: 6/18/2026, 11:18:57 AM

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