Three.js DevTools MCP Server

by dmitriygolub Your server? Claim it

local only

Three.js DevTools MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 4 435 installs a week from npm. Last commit 14 Oct 2026.

Inspect and edit Three.js scenes, materials, shaders, lights in real time from any AI agent

Installs per day peak 82 · avg 42 · +17% w/w

a month agotoday

4 435

Installs / week

npm · threejs-devtools-mcp

128

Stars

1 open issue

14 Oct 2026

Last commit

1 release in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Three.js DevTools MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add threejs-devtools -- npx -y threejs-devtools-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "threejs-devtools": {
      "command": "npx",
      "args": [
        "-y",
        "threejs-devtools-mcp"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.threejs-devtools]
command = "npx"
args = ["-y", "threejs-devtools-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "threejs-devtools": {
      "command": "npx",
      "args": [
        "-y",
        "threejs-devtools-mcp"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "threejs-devtools": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "threejs-devtools-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: DEV_PORT (Dev server port to proxy (auto-detected from package.json if not set)), BRIDGE_PORT (Bridge proxy port (default: 9222)), BROWSER (Set to 'none' to disable auto-opening browser), HEADLESS (Set to 'true' for headless browser mode (CI)), CHROME_PATH (Custom Chrome/Edge executable path).

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Three.js DevTools MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Three.js DevTools MCP?

Three.js DevTools MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package threejs-devtools-mcp was installed 4 435 times last week.

How do I connect Three.js DevTools MCP?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls threejs-devtools-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Three.js DevTools MCP?

The npm package threejs-devtools-mcp was installed 4 435 times in the last week. Week over week that is +17%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Three.js DevTools MCP open source?

Yes — it is published under the MIT licence, written in TypeScript, 128 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.