s&box MCP Knowledgebase

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

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codeAPI Reference
May 12, 2026

s&box SaveSystem: Scene save/load

SaveSystem GameObjectSystem API Reference SaveSystem is a saving/loading system that captures the differences between the current scene state and the original s…

codeAPI Reference
May 12, 2026

s&box SaveSystem: Scene save/load with metadata and event hooks

SaveSystem API Reference SaveSystem is a GameObjectSystem that captures differences between the current scene state and the original scene, enabling save/load f…

menu_bookDocumentation
May 4, 2026

Sandbox: SaveSystem — scene diff save/load with versioning and ISaveEvents

Sandbox SaveSystem — Scene Diff Save/Load The captures the difference between the current scene state and the original scene file. This means saves are compact …

terminalCode Example
May 3, 2026

Storage (UGC)

Manage user-generated content, save games, and player creations. Creating Entries Entry Properties Reading Files Listing Entries Deleting Entries Steam Workshop…

terminalCode Example
May 10, 2026

s&box JSONObject Save Data Helper for Components

This s&box-focused sample shows how to programmatically construct and deconstruct JSON for component save data. It is useful for player saves, world unlock stat…

terminalCode Example
May 10, 2026

Extensible Player Data Save Hooks for World Components

This pattern lets gameplay components plug into a player's save/load flow without putting every feature directly inside one large class. The framework has three…

codeAPI Reference
May 12, 2026

s&box Global.ISaveEvents: Save/load event callbacks

Global.ISaveEvents Interface API Reference Global.ISaveEvents is an interface for Components that want to listen to SaveSystem events. Implement to receive call…

terminalCode Example
May 3, 2026

BanSystem Pattern for Player Management

BanSystem - Player Ban Management A GameObjectSystem that manages player bans with persistent storage. Demonstrates , persistence, and RPC commands. Implementat…

menu_bookDocumentation
May 5, 2026

Storage UGC - s&box Assets Documentation

Storage UGC The Storage system manages user-generated content. Save games, player creations, and share to Steam Workshop. Creating a New Entry Create a storage …

terminalCode Example
May 4, 2026

Sandbox: Duplicator tool — copy, paste, and save contraptions with DuplicationData

Duplicator Tool — Copy, Paste, and Save Contraptions The Duplicator tool copies a contraption (a connected graph of GameObjects) to JSON and pastes it back. It …

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 …

menu_bookDocumentation
May 12, 2026

s&box ISpawnerExtensions: Creating spawner instances

ISpawnerExtensions: Creating ISpawner Instances ISpawnerExtensions provides an extension method to create ISpawner instances from type strings, supporting vario…

codeAPI Reference
May 3, 2026

Sandbox.Storage

Sandbox.Storage Save and load player data. Overview Storage provides persistent storage for player data, save games, and settings with automatic Steam Cloud syn…

menu_bookDocumentation
May 4, 2026

Sandbox: PlayerInventory — weapon slots, pickup, drop, and loadout persistence

Sandbox PlayerInventory — Weapon Slots, Pickup, Drop, and Loadout Persistence manages up to 6 weapon slots, handles pickup/drop logic, and delegates loadout sav…

codeAPI Reference
May 12, 2026

s&box ICookieSource: Cookie persistence interface

ICookieSource API Reference ICookieSource is an interface for components that want to save their properties as cookies (persistent user preferences stored in Ga…

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…

codeAPI Reference
May 3, 2026

Sandbox.Json

Sandbox.Json JSON serialization utilities. Overview Json provides methods for serializing objects to JSON and parsing JSON strings. Serialize Deserialize Parse …

menu_bookDocumentation
May 4, 2026

Sandbox: BanSystem — persistent ban list with INetworkListener.AcceptConnection

Sandbox BanSystem — Persistent Ban List with INetworkListener is a that implements to intercept incoming connections and reject banned players before they join.…

menu_bookDocumentation
May 12, 2026

LocalData persistence for server-side data

LocalData Persistence in s&box LocalData provides server-side data persistence that survives server restarts. It's useful for storing configuration, ban lists, …

menu_bookDocumentation
May 12, 2026

s&box GamePreferences: User preferences

GamePreferences Static Class GamePreferences is a static class that defines the local user's preferences for the game. These ConVars control player-specific set…