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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: 4 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 4 credentials: ANTHROPIC_API_KEY, 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.
// known CVEs in dependencies4 high2 low

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

high@modelcontextprotocol/sdk@1.11.0GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.11.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.11.0GHSA-w48q-cv73-mx4w

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

highesbuild@0.28.0GHSA-gv7w-rqvm-qjhr

esbuild: Missing binary integrity verification in Deno module enables remote code execution via NPM_CONFIG_REGISTRY

lowesbuild@0.28.0GHSA-g7r4-m6w7-qqqr

esbuild allows arbitrary file read when running the development server on Windows

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.
🔐 secretANTHROPIC_API_KEY— From the terminal — plumb-mcp fit <figma-url> generates a build, renders it headless in your Chrome, diffs, and corrects it pass-by-pass until it matches. (Needs .)
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_FIT_MODEL
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 10 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: dd5e1f9c18954004a9d22e9107414111e13e4242
code hash: 2389cf5cc4b822b782c4c6952a62d01b46a39c3b323df800c9bfb2fbc077820a
verified: 6/15/2026, 1:15:36 PM
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