plumb-mcp

Local Figma MCP server with no REST rate limits, no metered tool-call quotas, and a verification loop. Drop-in alternative to Figma's Dev Mode MCP and Framelink for Claude Code, Cursor, Windsurf — works on every plan including Free.

→ tathagat22/plumb-mcp · listed on github_topic

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// key findings

⚠️

Tool annotations don’t match behaviour

1 read-only tool performs write/delete/exec — plumb_query (line 196: /\s(\d+(?:\.\d+)?)px/.exec(tok))

⚠️

Known vulnerabilities in dependencies: 3 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 3 credentials: FIGMA_ACCESS_TOKEN, FIGMA_TOKEN, PLUMB_FILE_KEY

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

// required environment variables

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

configCHROME_PATH

🔐 secretFIGMA_ACCESS_TOKEN

🔐 secretFIGMA_TOKEN— Token required No. Yes — (figma.com → Settings → Security).

configPLUMB_ASSETS_DIR— Assets — ./plumb-assets/<screen>/ (override with ).

configPLUMB_CACHE_DIR— Cache — ~/.cache/plumb/v1/ (TTL'd; override with ).

configPLUMB_CACHE_TTL_MS

configPLUMB_CHROME

🔐 secretPLUMB_FILE_KEY— … # for npm run outline etc.

configPLUMB_NODE_ID— 131:6950 # demo target

configPLUMB_SCREENSHOTS_DIR— Screenshots — ./plumb-screenshots/ (override with ).

configPLUMB_SESSION_NAME

// 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 9 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/tathagat22-plumb-mcp-12sqtu)](https://m8ven.ai/mcp/tathagat22-plumb-mcp-12sqtu)

commit: 69e9899df422548cf28c8dd97b9f983363688c33

code hash: 5a568dcfc75645711a9096681fc305ad0240a4a0df97bd4be3e89323f1c5d338

verified: 5/28/2026, 11:39:40 AM

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