s&box

What is Claude Bridge?

Claude Bridge connects the Claude AI assistant to your s&box editor in real-time. Describe what you want in plain English — Claude creates the scripts, builds the scenes, adds physics, configures networking, and iterates until it works.

You: "Make a cube at position 0,0,100 with physics so it falls" Claude: creates GameObject, assigns box model, adds Rigidbody + BoxCollider

Setup (3 steps)
Step 1: Install Claude Bridge from the Asset Library into your project. Open the Claude Bridge dock panel from the View menu in the editor.

Step 2: Install the MCP Server You need Node.js 18+ installed. Then in a terminal:

git clone https://github.com/LouSputthole/Sbox-Claude.git
cd Sbox-Claude/sbox-mcp-server
npm install
npm run build

Step 3: Connect Claude Code Install Claude Code CLI, then run:

claude mcp add sbox -- node /full/path/to/Sbox-Claude/sbox-mcp-server/dist/index.js

That's it. Open Claude Code and start building.

78 Tools Included

Scene Building — Create, duplicate, transform, parent GameObjects. Full hierarchy access and editor selection.
Scripts & Templates — Generate player controllers, NPC AI, game managers, trigger zones, networked players, lobby managers.
Components — Add any of s&box's 130+ components, read/write properties, assign models and materials.
Physics — Rigidbodies, colliders (box, sphere, capsule, hull), joints (fixed, spring, hinge, slider), raycasts.
UI — Razor UI components, screen panels, world panels.
Audio — Sound events, assign sounds to objects, preview audio in editor.
Networking — Network spawn, sync properties, RPC methods, network helpers, lobby configuration.
Assets — Search the asset library, install packages, browse and manage prefabs.
Editor — Undo/redo, take screenshots, play/stop mode, save scenes.
Publishing — Validate projects, configure settings, set thumbnails, fetch package details.

How It Works

The bridge uses file-based IPC (no network connection needed). The MCP server writes request files to a temp directory, the bridge addon polls for them inside the s&box editor, processes commands on the main editor thread, and writes response files back. All communication stays on your local machine.

Requirements

s&box (Steam)
Node.js 18+
Claude Code CLI (from Anthropic)

Links

GitHub: https://github.com/LouSputthole/Sbox-Claude
Website: https://sboxskins.gg
Feedback & Bugs: [email protected]

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