d2-mcp-server

Item: d2-mcp-server
Rating: 55
Author: M8ven

Enables rendering, validation, formatting, and inspection of D2 diagrams via the Model Context Protocol, using WASM for rendering without requiring the d2 binary.

→ ItsJooL/d2-mcp · listed on glama

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// key findings

⚠️

Tool annotations don’t match behaviour

1 read-only tool performs write/delete/exec — d2_format (line 98: spawn(d2Path, args, { stdio: ["pipe", "pipe", "pipe"] }))

⚠️

Known vulnerabilities in dependencies: 2 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

// known CVEs in dependencies2 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.6.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.6.1GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

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// required environment variables

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

configD2_PATH— d2 binary only required for d2_format — install from [d2lang.com](https://d2lang.com) or set env var

// 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 5 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/itsjool-d2-mcp-v09ozs)](https://m8ven.ai/mcp/itsjool-d2-mcp-v09ozs)

commit: 177bfd1cc6a21f246eaa8bd51f13b1174c5c6493

code hash: aa285dcda9edd388af02fe81791c3c438fc1feba70d389ff99037cc06073437e

verified: 6/24/2026, 10:08:50 AM

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