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three.ws Scenes MCP Server

local only

three.ws Scenes runs on your own machine — the client starts it, so there is no endpoint to ping. 94 installs a week from npm. Last commit 1 Nov 2026.

Compose a placed 3D diorama from one sentence, export a forged world, browse saved scenes.

Installs per day peak 21 · avg 7 · +262% w/w
a month agotoday
94
Installs / week
npm · @three-ws/scene-mcp
264
Stars
6 open issues
1 Nov 2026
Last commit
2 releases in 90 days
Apache-2.0
License
JavaScript

What the code does

We read the source, 22 h ago · rules 995398eba69f

Evidence

Things with no honest explanation: a promise that contradicts the code, code that runs at install time while hiding what it does, data leaving the machine.

Reaches cloud metadata service api/_lib/gcp-auth.js:91
        'http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token',
Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

        UPDATE destination_whitelist_settings
        SET cooldown_seconds = ${ch.cooldown_seconds ?? row.cooldown_seconds},
        const proc = spawn(ffmpegPath(), ['-hide_banner', '-loglevel', 'error', '-i', 'pipe:0', ...args, 'pipe:1']);
Builds a file path from a variable api/sitemap/[type].js:77, apps/forge-desktop/api/texture_baker/setup.py:82, apps/forge-desktop/api/uv_unwrapper/setup.py:64 и ещё 1
                return JSON.parse(await readFile(path.join(base, rel), 'utf8'));
Page executes code built at runtime agents/index.html:223
            if (reset) { state.cursor = null; state.total = 0; grid.innerHTML = skeletons(); stateEl.hidden = true; }
        `https://api.telegram.org/bot${cfg.token}/sendMessage`,
    "bytecode": "0x60806040523480156200001157600080fd5b5060405162000dd238038062000dd2833981016040819052620000349162000351565b8383600362000044838262000477565b50600462000053828262000477565b5050506001600160a01b038116620000a65760405162461bcd60e51b8152602060048201526011602482015270726…
import { existsSync, mkdirSync, readdirSync, statSync } from 'fs'
Touches key and credential files Dockerfile:53
COPY --parents package.json package-lock.json .npmrc* **/package.json /app/

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

We found things in this code

Code changes quietly between releases, and nobody reads the diff of a dependency. We do, on every release — watch three.ws Scenes and you get told the day something new turns up.

Three servers free · no card

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.

run in your terminal
claude mcp add scene-mcp -- npx -y @three-ws/scene-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "scene-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/scene-mcp"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.scene-mcp]
command = "npx"
args = ["-y", "@three-ws/scene-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "scene-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/scene-mcp"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "scene-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/scene-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: THREE_WS_BASE (Base URL of the three.ws API that serves /api/diorama. Override only when self-hosting or targeting a preview deployment), THREE_WS_TIMEOUT_MS (Per-request timeout in milliseconds. compose_scene runs a server-side LLM chain, so the default is generous).

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three.ws Scenes — questions

Answers built from our own checks of this server.

Why is there no uptime for three.ws Scenes?
three.ws Scenes 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 @three-ws/scene-mcp was installed 94 times last week.
How do I connect three.ws Scenes?
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 @three-ws/scene-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use three.ws Scenes?
The npm package @three-ws/scene-mcp was installed 94 times in the last week. Week over week that is +262%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is three.ws Scenes open source?
Yes — it is published under the Apache-2.0 licence, written in JavaScript, 264 stars on GitHub and 6 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.