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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
Results for "validation" 42 results closeClear
groupsCommunity
May 3, 2026

Multiplayer Authority Patterns

Multiplayer Authority Patterns Community guide for structuring multiplayer code based on official networking documentation and proven patterns. Host-Authoritati…

menu_bookDocumentation
May 5, 2026

Auth Tokens - s&box Services Documentation

Auth Tokens Auth tokens allow your game to authenticate players with external backends. The token proves the player's identity and can be validated against Face…

menu_bookDocumentation
May 20, 2026

Auth Tokens: Steam Identity Validation for External Services

Auth Tokens validate that HTTP or WebSocket requests originate from a legitimate Steam user in an active s&box game session. Use them to tie data to Steam accou…

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 3, 2026

Property Attributes for Editor Inspector

Property Attributes for Editor Inspector Property attributes customize how fields appear and behave in the s&box editor inspector. Organization Attributes Visib…

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

Property Attributes: Inspector Customization for Components and Assets

Property attributes control how Component properties appear in the s&box editor/inspector. They work on both Components and GameResource properties. Layout and …

menu_bookDocumentation
May 5, 2026

Inspector property attributes — Range, Group, ShowIf, Title, Feature, and more

Inspector Property Attributes Attributes control how component properties appear in the s&box editor inspector. Apply them alongside on your component fields to…

codeAPI Reference
May 12, 2026

s&box TriggerTeleport: Trigger-based teleportation

TriggerTeleport Component API Reference TriggerTeleport is a Component that teleports objects that enter its trigger collider to a target GameObject. Type Signa…

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…

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 3, 2026

s&box Cheat Sheet

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

codeAPI Reference
May 12, 2026

s&box IKillIcon: Kill feed icon interface

IKillIcon API Reference IKillIcon is an interface for components that can display a kill icon in the kill feed or other UI elements. Type Signature Property - T…

codeAPI Reference
May 3, 2026

ToolMode SelectionPoint and Trace Helpers

ToolMode.SelectionPoint and Trace Helpers Helper methods and data structures for toolgun selection and placement. SelectionPoint Struct Trace Methods Placement …

terminalCode Example
May 4, 2026

Sandbox: ToolMode system — creating custom Tool Gun modes

ToolMode System — Creating Custom Tool Gun Modes is the base class for all Tool Gun tools in Sandbox. Tools are components on the Toolgun and are enabled/disabl…

codeAPI Reference
May 12, 2026

s&box INetworkListener: Connection interception

Interface for network connection interception. Implement to accept or reject incoming connections. Methods Usage Implement on a GameObjectSystem or Component to…

menu_bookDocumentation
May 3, 2026

Component Lifecycle Methods Reference

Component Lifecycle Methods s&box Components have a well-defined lifecycle with specific methods you can override for different phases of initialization and upd…

codeAPI Reference
May 12, 2026

s&box ScriptedEmitter: Particle emitter GameResource

ScriptedEmitter GameResource API Reference ScriptedEmitter is a GameResource that defines a particle/VFX emitter with a prefab, used for spawning visual effects…

codeAPI Reference
May 3, 2026

BaseConstraintToolMode for Constraint Tools

BaseConstraintToolMode Abstract Class Base class for two-stage constraint tools (weld, rope, elastic, etc.) with selection point handling. Class Overview Contro…

codeAPI Reference
May 3, 2026

ToolMode Base Class for Toolgun Modes

ToolMode Base Class Abstract base class for creating toolgun modes in s&box. Handles input registration, action dispatch, and HUD rendering. Class Overview Acti…