How do I install Plumb?

Plumb is a local plugin. Install it using npm package: plumb-mcp and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

What credentials does Plumb need?

Plumb requires the following credentials or environment variables: FIGMA_TOKEN, PLUMB_SESSION_NAME. You can find setup instructions on the server detail page.

What AI apps work with Plumb?

Plumb uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Plumb MCP Server

by Tathagat22

Developer ToolsUse Caution4.8MCP RegistryLocal

Free

Server data from the Official MCP Registry

Figma → code MCP: no rate limits, no metered quotas, verification loop. Works on every Figma plan.

About

Figma → code MCP: no rate limits, no metered quotas, verification loop. Works on every Figma plan.

Security Report

4.8

Use Caution4.8High Risk

Plumb is a well-architected Figma MCP server with solid security fundamentals. Authentication is properly scoped to the plugin pairing mechanism and optional REST token handling. Code quality is high with proper error handling and input validation. The loopback-only WebSocket bridge and deliberate plugin pairing click provide good access controls. No malicious patterns or dangerous credential handling detected. Supply chain analysis found 4 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.

4 files analyzed · 9 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

env_vars

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

network_websocket

Check that this permission is expected for this type of plugin.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

File System Write

Writes or modifies files on your machine. Check that this is expected for the tool.

process_spawn

Check that this permission is expected for this type of plugin.

system_info

Check that this permission is expected for this type of plugin.

What You'll Need

Set these up before or after installing:

Figma personal access token (read-only). Only needed for the REST path — not required when the Plumb plugin is paired in Figma desktop. Create one at figma.com → Settings → Security → Personal access tokens.Required

Environment variable: FIGMA_TOKEN

Optional label shown in the Plumb Figma plugin when multiple plumb-mcp servers are paired with the same plugin (multi-agent connect). Defaults to the basename of the current working directory.Optional

Environment variable: PLUMB_SESSION_NAME

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-tathagat22-plumb-mcp": {
      "env": {
        "FIGMA_TOKEN": "your-figma-token-here",
        "PLUMB_SESSION_NAME": "your-plumb-session-name-here"
      },
      "args": [
        "-y",
        "plumb-mcp"
      ],
      "command": "npx"
    }
  }
}

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Plumb MCP Server

About

Security Report

Findings (9)Action required

Permissions Required

What You'll Need

How to Install

Reviews

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