s&box

Apr 2026 8 posts

fruit 44 Days Ago edited 43 Days Ago

Claude Code integration for the s&box editor.
https://sbox.game/ghage/claude-sbox

https://sbox.game/learn/ghage/claude-sbox-integration

Anything user-facing in the editor → reachable from the agent. ~593 MCP tools across scene,

inspector, Hammer, ModelDoc, AnimGraph, assets, schema, Roslyn, hotload, physics, audio,

particles, NavMesh - agent can spawn prefabs, drive Hammer cameras, swap entity classes, query the

live API schema, run C# snippets, batch-transform selections, etc.

A docked PTY terminal (View → ClaudeSbox) lets you bring your own harness - Codex, Claude Code,

anything you can run in a shell - straight inside sbox-dev. Three concurrent MCP transports on

127.0.0.1:6790 - HTTP, SSE, stdio bridge - any MCP client connects.

Install

From your sbox-public checkout (git clone --recursive https://github.com/Facepunch/sbox-public),
open a terminal and run:

cd game\addons

git clone https://github.com/coffeegrind123/claude-sbox-setup.git

cd claude-sbox-setup

.\Setup.bat

.\Bootstrap-And-Capture.bat

Launch game\sbox-dev.exe with any project, open the developer console, and run once, ever:

package_install ghage.claude-sbox tools

That's it. The engine patches from the setup repo handle everything from here on - the addon

auto-mounts for every project on every editor restart, with no redownload (files are mirrored to a

global cache at <sbox-public>/game/.sbox-global/cloud/.bin/). The MCP host comes up automatically

on http://127.0.0.1:6790.

Connect Claude Code

claude mcp add --transport http -s user sbox http://127.0.0.1:6790/mcp

(or http://host.docker.internal:6790/mcp if you run Claude Code inside a devcontainer for example)

For stdio-only MCP clients (Claude Desktop, Cline, etc.), use the bundled bridge at

game/addons/claude-sbox-setup/bridge/dist/bridge.js - see the setup repo's README for client

configs.

What the setup repo provides

- Engine patches - auto-mount the addon for every project from a single one-time package_install,

with a global cache so subsequent project loads are instant and offline-capable; manifest dedupe

for Bootstrap.bat reliability; tool-type publish support.

- Node MCP bridge for stdio clients.

- sbox-live Claude Code skill for routing, gotchas, and Unity → s&box translation tables.

Discord

Discord - Group Chat That’s All Fun & Games

Discord is great for playing games and chilling with friends, or even building a worldwide community. Customize your own space to talk, play, and hang out.

edited:

Riveting footage

trophy 0

Jun 2026 1 post

kvshepherd 13 Days Ago

quote #2

Hi
This looks great and I've been trying to install this but "I'm getting asset.sbox.game returning no A record from UAE — package_install crashes in contentbuilder.exe during manifest download. Is there a direct download of the package files I can manually place in .sbox-global/cloud/.bin/?"
Thanks

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Apr 2026 8 posts

fruit 8 Days Ago

quote #3

Hi, I don't prefer to distribute it outside sbox.game so maybe try with a vpn? thanks

kvshepherd posted:

Hi This looks great and I've been trying to install this but "I'm getting asset.sbox.game returning no A record from UAE — package_install crashes in contentbuilder.exe during manifest download. Is there a direct download of the package files I can manually place in .sbox-global/cloud/.bin/?" Thanks

trophy 95

May 2026 5 posts

s7nth 6 Days Ago

quote #4

kvshepherd posted:

Hi This looks great and I've been trying to install this but "I'm getting asset.sbox.game returning no A record from UAE — package_install crashes in contentbuilder.exe during manifest download. Is there a direct download of the package files I can manually place in .sbox-global/cloud/.bin/?" Thanks

Also getting package install errors. claude-sbox package simply doesn't want to install properly... It fetches the XML file and that's it. Logs indicate it "successfully downloads" as well:

[Generic] Installing package ghage.claude-sbox	
[PackageManager] Install Package (Already Mounted) ghage.claude-sbox [tools]	
[Generic] Installed Sandbox.PackageManager+ActivePackage

Tried just about everything. Clearing cloud.db, clean project, multiple clean rebuilds of sbox + claude-sbox-setup, fresh install on a separate hard drive. Unfortunately had to throw in the towel 😅