s&box MCP Knowledgebase

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

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Results for "Message" 37 results closeClear
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. …

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

Platform Chat - Built-in Multiplayer Text Chat System

Built-in text chat for multiplayer games. Messages are routed through the host, validated, filtered, and displayed via the standard overlay UI - no game code re…

menu_bookDocumentation
May 12, 2026

Steam filtering API for user content sanitization

Steam Filtering API in s&box s&box provides Steam filtering APIs to sanitize user-generated content like names and chat messages. This helps prevent profanity, …

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 20, 2026

Platform Chat: Built-in Text Chat with IChatEvent Filtering

s&box includes a built-in platform chat system for multiplayer games. Messages are routed through the host, validated, filtered via Steam's text filter, and dis…

menu_bookDocumentation
May 5, 2026

WebSockets - s&box Networking Documentation

WebSockets s&box supports WebSocket connections for real-time communication with external servers. Use for custom networking, persistent data, or integrating wi…

menu_bookDocumentation
May 20, 2026

WebSockets: External Server Communication with Auth Token Support

s&box allows WebSocket connections to interface with external servers. Common uses include custom networking and persistent data storage outside the local files…

terminalCode Example
May 3, 2026

WebSockets

Use WebSockets for real-time communication with external servers. Basic Setup With Auth Token Common Use Cases Custom networking — External matchmaking, chat se…

menu_bookDocumentation
May 20, 2026

WebSocket Connections with Auth Token Authentication in s&box

s&box supports WebSocket connections to external servers for custom networking or persistent data outside the local filesystem. Basic Connection and Messaging U…

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 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…

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 5, 2026

Code Basics - s&box Documentation

Code Basics C# is the primary programming language for s&box. The engine uses modern .NET with hotloading support, allowing you to see code changes instantly wi…

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 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…

menu_bookDocumentation
May 4, 2026

Game Static Class: ActiveScene, ChangeScene, TypeLibrary, Cookies, and Core State Properties

Game Static Class: ActiveScene, ChangeScene, TypeLibrary, and Core State The static class is the primary entry point for global game state in s&box. Core State …

terminalCode Example
May 5, 2026

Async tasks in s&box — coroutines, parallel tasks, and frame-by-frame animation

Async Tasks in s&box Components s&box async tasks run on the main thread — they behave like coroutines. Use to yield one frame, to wait, and to run tasks in par…

menu_bookDocumentation
May 4, 2026

Doo: Visual Scripting Tasks — Running, Stopping, and Exposing Methods

Doo: Visual Scripting Tasks on Components is s&box's visual scripting system. A is a serializable list of executable blocks that can be run on a component. It i…

menu_bookDocumentation
May 4, 2026

RPC Attributes: Rpc.Broadcast, Rpc.Host, Rpc.Owner — Targeting, NetFlags, and Rpc.FilterInclude/Exclude

RPC Attributes: Rpc.Broadcast, Rpc.Host, Rpc.Owner — Targeting and Flags s&box RPCs are declared with nested attributes on the static class. The old top-level a…