Localfig MCP server

localfig

The Figma desktop app as an MCP server. localfig gives an AI agent the full Figma Plugin API on the file you have open — through a tiny dev plugin and a loopback HTTP bridge, entirely on your machine.

• Reads and writes. Frames, text, auto-layout, variables, components, image fills, exports, undo — anything the Plugin API can do, the agent can do.
• No Figma cloud API, no personal access token, no per-account quota.
• Zero dependencies. Node built-ins only. Nothing leaves your machine.
• Works with any MCP client that can launch a stdio server: Claude Code, Cursor, Windsurf, Cline, Claude Desktop and more.

MCP client  --stdio JSON-RPC-->  localfig  --http localhost:8765-->  Figma plugin  -->  Plugin API

Why localfig

Requirements

• Node.js 18 or newer
• The Figma desktop app — dev plugins cannot be imported in the browser
• An MCP client: Claude Code, Cursor, Windsurf, Cline, Claude Desktop, …

Install (once)

npx -y localfig --setup

That generates your local secret, writes the plugin to ~/.localfig/plugin/, registers localfig with every MCP client it finds on your machine, and prints the manifest path for the next step. --dry-run shows what it would do without touching anything, and --clients=cursor,vscode limits it to the clients you name. Prefer a clone? git clone https://github.com/LucasGorgal/localfig.git && cd localfig && node server.mjs --setup does the same.

A client counts as installed when its config folder exists. Setup merges into existing files instead of replacing them: other servers and settings stay, an existing localfig entry keeps its env, and a .localfig.bak copy is written before any change. Files it cannot safely rewrite, such as a settings.json with comments, are left untouched and reported with the entry to paste. Restart any client that was already open.

For a client that is not in the list, add this to its MCP configuration:

{ "mcpServers": { "localfig": { "command": "npx", "args": ["-y", "localfig"] } } }

On Windows, use "command": "cmd", "args": ["/c", "npx", "-y", "localfig"] instead: most clients start servers without a shell, and npx is a .cmd script there.

Then import the plugin into Figma (once):

Shortened. The full README is on GitHub.