s&box MCP Knowledgebase

Documentation, API references, code examples and community knowledge for s&box development.

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menu_bookDocumentation
May 5, 2026

File System - s&box Assets Documentation

File System s&box provides several file systems for different purposes - data persistence, mounted content, and organization. File Systems Data File System For …

terminalCode Example
May 3, 2026

Multiplayer and Networking

Complete guide to multiplayer setup in s&box. Creating a Lobby Joining a Lobby Spawning Networked Players Host/Client Checks Connection Events Networked Object …

menu_bookDocumentation
May 3, 2026

s&box Cheat Sheet

s&box Cheat Sheet Quick reference for common s&box operations. Debugging Transforms GameObjects Components Input Networking

menu_bookDocumentation
May 4, 2026

s&box Sandbox Security Model: Assembly Whitelist, Blocked APIs, Reflection Restrictions, and Safe Assembly Caching

s&box Sandbox Security Model: Assembly Access Control and Whitelisted APIs s&box uses a whitelist-based security model to prevent game code from accessing dange…

menu_bookDocumentation
May 4, 2026

Connection Class: Local, Host, All, Find, Permissions, Kicking, and Visibility Origins

Connection Class: Local, Host, All, Find, and Permissions represents a network connection to a player. It's the primary way to identify and interact with player…

codeAPI Reference
May 20, 2026

Connection API: Properties, Methods, and Common Multiplayer Patterns

The class represents a network connection (client or server). Used extensively in multiplayer for identifying players, checking permissions, and managing networ…

terminalCode Example
May 3, 2026

Nameplate Component with Voice Activity

Nameplate with Voice Activity A Razor component that displays player nameplates above characters with voice chat visualization. Implementation SCSS Example Key …

menu_bookDocumentation
May 4, 2026

Voice Component: Push-to-Talk, Lip Sync Visemes, ExcludeFilter, ShouldHearVoice, and Amplitude

Voice Component: Voice Chat, Lip Sync, and Viseme Morphs The component handles voice chat recording, transmission, and playback with optional lip sync. Basic Se…

terminalCode Example
May 3, 2026

Chat UI Pattern with RPC Broadcasting

Chat UI with RPC Broadcasting A Razor UI component for game chat that handles local input, RPC broadcasting, Steam filtering, and automatic message expiration. …

menu_bookDocumentation
May 5, 2026

Publishing Clothing - s&box Clothing Documentation

Publishing Clothing Publish clothing assets to sbox.game for players to use. Setting up your .Clothing File Create a clothing definition asset: Right-click in A…

menu_bookDocumentation
May 20, 2026

Cheat Sheet: Quick Reference for s&box GameObjects, Components, and Debugging

Quick reference for common s&box operations across debugging, transforms, GameObjects, and Components. Debugging Transforms GameObjects Components

terminalCode Example
May 3, 2026

DynamiteEntity Explosive Entity Pattern

DynamiteEntity - Simple Explosive Entity A simple explosive entity that can be triggered via damage or player input. Demonstrates , , and prefab cloning pattern…

menu_bookDocumentation
May 20, 2026

Storage UGC: User-Generated Content with Steam Workshop Integration

The s&box Storage system provides a unified way to manage user-generated content in your game. Each storage entry is a self-contained folder with its own filesy…

menu_bookDocumentation
May 5, 2026

Input - s&box Gameplay Documentation

Input s&box provides a comprehensive input system that handles keyboard, mouse, and gamepad input. The input system uses named actions defined in your project s…

menu_bookDocumentation
May 20, 2026

Input System Overview: Button Queries, Analog Input, and Escape Override

The s&box Input class provides button queries, analog input, and escape key handling for gameplay. Button Queries Analog Input Custom Keys Configure input actio…

codeAPI Reference
May 12, 2026

s&box Global.ISpawnEvents: Spawn event callbacks

Global.ISpawnEvents Interface API Reference Global.ISpawnEvents is an interface for Components that want to listen to spawn events across the scene. Implement t…

codeAPI Reference
May 12, 2026

s&box ISpawner: Spawner interface

ISpawner Interface API Reference ISpawner describes something that can be spawned into the world. Implementations handle their own preview rendering and spawn l…

menu_bookDocumentation
May 5, 2026

RPC Messages - s&box Documentation

RPC Messages Components can contain RPCs. An RPC is a function that when called, is called remotely too. Supported RPC arguments are the exact same as Sync prop…

terminalCode Example
May 12, 2026

RPC-based chat system with avatars and Steam filtering

RPC-Based Chat System with Avatar Support This example shows a complete chat system using Razor, RPC broadcasting, Steam filtering, and avatar display. Key Feat…

menu_bookDocumentation
May 20, 2026

Binary Serialization: BlobData for Large GameResource Data Storage

When JSON files grow too large in s&box, you can store data as a binary blob using the class. This works with GameResource assets and provides custom serializat…