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 FuncMover: Moving and rotating objects

FuncMover Component API Reference FuncMover is a Component that moves and rotates a GameObject with configurable linear and rotational movement patterns. Type S…

menu_bookDocumentation
May 4, 2026

SyncFlags.Interpolate: How Networked Property Interpolation Works — Supported Types, InterpolationBuffer, and Delay

SyncFlags.Interpolate: How Networked Property Interpolation Works When is applied to a property, proxy clients receive a smoothed value between network ticks ra…

menu_bookDocumentation
May 12, 2026

s&box StackDirection: Stacker tool directions

s&box StackDirection Enum StackDirection is an enum used by the Stacker tool to specify which axis to stack objects along. It defines the six cardinal direction…

terminalCode Example
May 3, 2026

Ownable Component Pattern for Prop Ownership

Ownable Component - Prop Ownership and Permission System A component that tracks which player spawned an object and enforces ownership-based permissions. Useful…

codeAPI Reference
May 12, 2026

s&box BanSystem: Player ban management

BanSystem GameObjectSystem API Reference BanSystem holds a banlist and can ban users. Implements INetworkListener to reject banned connections. Bans are persist…

menu_bookDocumentation
May 20, 2026

Sync Properties: Networked State with Change Detection and Collections

The attribute on a Component property sends its latest value to other players each time it changes. Only the owner of the object can change synced properties. B…

terminalCode Example
May 12, 2026

s&box player management with RPC, ConCmd, and Connection APIs

s&box Player Management with RPC, ConCmd, and Connection APIs This example shows player kick/ban utilities using s&box's Connection, RPC, ConCmd, and Chat syste…

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

Custom Snapshot Data - s&box Networking Documentation

Custom Snapshot Data For advanced networking, you can write and read custom data in network snapshots. This allows efficient synchronization of complex game sta…

terminalCode Example
May 3, 2026

Input Handling Code Examples

Input Handling Code Examples Comprehensive input examples covering buttons, analog sticks, mouse, controller, and VR input. Default Input Actions

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 …

terminalCode Example
May 4, 2026

Sandbox: ISpawner interface — custom spawner pattern with ISpawnEvents

ISpawner Interface — Custom Spawner Pattern The interface defines the contract for anything that can be spawned via the spawn menu. Implementations include , , …

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 …

terminalCode Example
May 4, 2026

Sandbox: BaseCarryable — unified AimRay, WeaponModel resolution, and seat-aware damage

BaseCarryable — Unified Weapon Base with AimRay and Seat Support is the root class for all holdable items. It handles viewmodel/worldmodel management, a unified…

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…

codeAPI Reference
May 3, 2026

Sandbox.Angles

Sandbox.Angles Euler angles (yaw, pitch, roll) representation. Overview Angles stores rotation as yaw, pitch, and roll in degrees — easier to work with than qua…

menu_bookDocumentation
May 3, 2026

Network Ownership System

Network Ownership System Control who simulates and updates networked GameObjects with the ownership system. Ownership Basics Every networked object has an Owner…

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 5, 2026

Prefab instance overrides — customizing instances without breaking the prefab link

Prefab Instance Overrides Prefab instance overrides let you customize individual instances without affecting the original prefab or other instances. The instanc…

menu_bookDocumentation
May 5, 2026

Ownership - s&box Networking Documentation

Ownership Network ownership determines which client or the host has authority over a networked GameObject. The owner controls synced properties and can send RPC…