Composer Diagram MCP

Give AI agents a visual architecture canvas — build, read, and modify system design diagrams from Claude Code, Cursor, or any MCP client.\r\n

→ OliverGrabner/composer-mcp · listed on mcp_so

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// key findings

⚠️

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.

🔐

You'll be asked for 1 credential: COMPOSER_TOKEN

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies2 high5 medium6 low

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

highvite@6.0.0GHSA-fx2h-pf6j-xcff

vite: `server.fs.deny` bypass on Windows alternate paths

highvite@6.0.0GHSA-p9ff-h696-f583

Vite Vulnerable to Arbitrary File Read via Vite Dev Server WebSocket

mediumvite@6.0.0GHSA-356w-63v5-8wf4

Vite has an `server.fs.deny` bypass with an invalid `request-target`

mediumvite@6.0.0GHSA-4w7w-66w2-5vf9

Vite Vulnerable to Path Traversal in Optimized Deps `.map` Handling

mediumvite@6.0.0GHSA-859w-5945-r5v3

Vite's server.fs.deny bypassed with /. for files under project root

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

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

configCOMPOSER_API_URL

🔐 secretCOMPOSER_TOKEN

configDEMO

configINPUT

configPORT

// 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 6 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/olivergrabner-composer-mcp-zyn0f2)](https://m8ven.ai/mcp/olivergrabner-composer-mcp-zyn0f2)

commit: ad37107f82b896450da99337f01f679edf30d3b9

code hash: e4f8c83876ff4ada558be4ea70237d6bb9dea6fcce6a8f1d9f78edb00c6e4801

verified: 7/3/2026, 9:49:49 AM

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