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s&box MCP Knowledgebase

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

library_books 595 entries menu_book 352 Documentation code 133 API Reference terminal 100 Code Example groups 10 Community
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codeAPI Reference
May 12, 2026

s&box ScriptedEntity: Custom entity GameResource

ScriptedEntity GameResource API Reference ScriptedEntity is a GameResource that defines a spawnable entity with a prefab, used by the spawn menu to create custo…

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…

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 12, 2026

s&box EntitySpawnerEntity: Entity spawner

EntitySpawnerEntity Component API Reference EntitySpawnerEntity is a world-placed SENT that spawns another SENT at its location. Can be triggered manually via p…

menu_bookDocumentation
May 20, 2026

Networked Objects: Spawning, Network Modes, and Interpolation

Any GameObject can become networked by calling . It will then be sent to all clients and can have Sync Properties and RPC Messages. Spawning a Networked Object …

menu_bookDocumentation
May 4, 2026

s&box SceneNetworkSystem: Scene Loading and Snapshot Protocol

s&box SceneNetworkSystem: Scene Loading and Snapshot Protocol is the core networking system that manages scene loading, object spawning, and snapshot synchroniz…

menu_bookDocumentation
May 5, 2026

Sync Properties - Complete Networking Guide

Sync Properties Sync Attribute Adding the attribute to a property on a Component will have its latest value sent to other players each time it changes. These pr…

menu_bookDocumentation
May 12, 2026

Rpc.FilterInclude for targeted RPC broadcasting

Rpc.FilterInclude for Targeted RPC Broadcasting Rpc.FilterInclude is a using statement in s&box that restricts RPC broadcasts to specific connections only. This…

codeAPI Reference
May 4, 2026

s&box NetworkMode Enum and INetworkListener: Controlling Network Participation

s&box NetworkMode Enum: Controlling How GameObjects Are Networked controls how a participates in the network. Usage NetworkMode.Object The object has an owner (…

menu_bookDocumentation
May 4, 2026

RPC Security: How s&box Validates Incoming RPCs — Attribute Check, Permission Flags, Kick on Unauthorized

RPC Security: How s&box Validates Incoming RPCs Understanding how s&box validates incoming RPCs is important for writing secure multiplayer code. Validation Ste…

menu_bookDocumentation
May 20, 2026

RPC Messages: Broadcast, Owner, Host with Filtering and Caller Info

Components can contain RPCs — functions that when called locally, are also called remotely. Supported RPC argument types are the same as Sync properties. Basic …

menu_bookDocumentation
May 20, 2026

Scene Events: Interface-Based Broadcasting and Listening

s&box uses interface-based events to broadcast and listen to events within a scene. Events are sent to active Components and GameObjectSystems — they are NOT se…

menu_bookDocumentation
May 20, 2026

INetworkSnapshot: Custom Binary Data in s&box Network Snapshots

s&box Components can implement to write and read custom binary data during the network snapshot process. When a client joins a server, the snapshot is sent once…

menu_bookDocumentation
May 20, 2026

Networked Objects: NetworkSpawn, Interpolation, and Network Modes

Any GameObject can become a networked object by calling on it. It will then be sent to all clients and can have Sync Properties and RPC Messages. Network Mode I…

menu_bookDocumentation
May 20, 2026

Custom Snapshot Data: INetworkSnapshot for s&box Joining Client Data Transfer

s&box Components can write and read custom data during the network snapshot process by implementing . The snapshot is sent to clients when they join a s&box mul…

terminalCode Example
May 5, 2026

ConVar and ConCmd — console variables and commands with flags and game settings

ConVar and ConCmd — Console Variables and Commands and are s&box attributes for exposing variables and commands to the developer console. Console Commands Conso…

menu_bookDocumentation
May 20, 2026

ISceneStartup: Scene Initialization Events for Host and Client Setup

The event interface in s&box allows Components and GameObjectSystems to listen to scene startup events. These run when pressing play in editor, loading a game, …

terminalCode Example
May 3, 2026

Stats API

Track player statistics with the Stats service. Recording Stats Reading Stats Stat Types Batching Stats are automatically batched and sent periodically. Call as…

menu_bookDocumentation
May 4, 2026

ComponentFlags: Hidden, NotSaved, NotNetworked, NotCloned — Controlling Component Behavior

ComponentFlags: Controlling Component Serialization, Networking, and Visibility is a flags enum on that controls how a component behaves in the editor, serializ…

menu_bookDocumentation
May 20, 2026

Network Visibility: Culling and INetworkVisible Interface

Network Visibility controls whether a networked object sends updates (Sync Vars, Transform) to a specific player. By default, all networked objects always trans…