io.github.finfin/mermaid-mcp-app

Scored by MCP Vouch against the OWASP MCP Top 10. SKIP applies to HTTP-only checks not relevant for stdio servers and is excluded from the score.

• PASSMCP01Tool Poisoning10 / 10
• WARNMCP02Insufficient Input Validation5 / 10
• PASSMCP03Resource Injection10 / 10
• PASSMCP04Unauthorized Capability Exposure10 / 10
• SKIPMCP05Missing Authentication—
• SKIPMCP06Insecure Transport—
• PASSMCP07Shadow Tool Registration10 / 10
• WARNMCP08Lack of Audit and Telemetry5 / 10
• WARNMCP09Inadequate Rate Limiting5 / 10
• WARNMCP10Supply Chain Risk5 / 10

Is io.github.finfin/mermaid-mcp-app safe to use?

io.github.finfin/mermaid-mcp-app scores 75/100 — grade B, which is a solid posture with a few gaps worth reading. It passes 4 of the 8 OWASP MCP Top-10 checks that apply to it, with Insufficient Input Validation, Lack of Audit and Telemetry, Inadequate Rate Limiting, and Supply Chain Risk returning a warning rather than a pass. 2 further checks do not apply to this server's transport and are excluded from the score entirely — skipped is not the same as failed. This is what the scanner found on 2026-07-12, not a guarantee. Re-run it yourself with `npx mcpr scan`.

What a grade B means, the ten checks behind it, and the point maths are all on how we score MCP server trust.

Capabilities

Not yet declared in the manifest.

Embed the live badge

Always reflects the current grade. Score drops → badge drops. No vanity lock.

[![MCP trust score](https://mcp-registry-dh5.pages.dev/api/badge/mcpr-io-github-finfin-mermaid-mcp-app.svg)](https://mcp-registry-dh5.pages.dev/servers/mcpr-io-github-finfin-mermaid-mcp-app/)

Install

One-click cross-client install (Claude Code, Claude Desktop, Cursor, Windsurf) coming soon. The registry will write the correct config fragment to the correct file — no copy-paste.

Frequently asked questions

Is io.github.finfin/mermaid-mcp-app safe to use?

io.github.finfin/mermaid-mcp-app scores 75/100 — grade B, which is a solid posture with a few gaps worth reading. It passes 4 of the 8 OWASP MCP Top-10 checks that apply to it, with Insufficient Input Validation, Lack of Audit and Telemetry, Inadequate Rate Limiting, and Supply Chain Risk returning a warning rather than a pass. 2 further checks do not apply to this server's transport and are excluded from the score entirely — skipped is not the same as failed. This is what the scanner found on 2026-07-12, not a guarantee. Re-run it yourself with `npx mcpr scan`.

What is the io.github.finfin/mermaid-mcp-app trust score based on?

Ten checks derived from the OWASP MCP Top 10, run against the live server by the open-source MCP Vouch scanner. Applicable checks are summed and scaled to 0–100; checks that do not apply to the server's transport are skipped and leave the denominator entirely.

How do I install io.github.finfin/mermaid-mcp-app?

io.github.finfin/mermaid-mcp-app is installed like any other MCP server — add it to your client's MCP configuration. Cross-client one-click install is coming to MCP Registry; until then, the repository and homepage links on this page carry the maintainer's own instructions.