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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 ServerSettings: Replicated server-controlled settings

ServerSettings API Reference ServerSettings is a static class for server-controlled settings that are replicated to all clients. Type Signature Example Property…

menu_bookDocumentation
May 12, 2026

s&box DupeMovement: Duper movement types

s&box DupeMovement Enum DupeMovement is an enum that describes the type of movement a duper contraption is designed for. This metadata helps users understand ho…

menu_bookDocumentation
May 4, 2026

ConVar and ConCmd: Console Variables and Commands in s&box

ConVar and ConCmd: Console Variables and Commands s&box uses and attributes on static properties and methods to expose them to the console system. ConVar (Conso…

menu_bookDocumentation
May 12, 2026

s&box NpcConVars: Global NPC AI settings

NpcConVars Static Class NpcConVars is a static class that defines console variables controlling global NPC AI behavior in s&box. These ConVars can be set via co…

menu_bookDocumentation
May 12, 2026

s&box WeaponConVars: Global weapon settings

WeaponConVars Static Class WeaponConVars is a static class that defines console variables controlling global weapon behavior in s&box. These ConVars can be set …

menu_bookDocumentation
May 5, 2026

Hotloading - s&box Documentation

Hotloading Whenever you save a code file in your project (.cs or .razor files), we recompile and attempt to live-reload the changed assembly. This lets you quic…

menu_bookDocumentation
May 5, 2026

Connection Permissions - s&box Networking Documentation

Connection Permissions Connection permissions control what clients can do in your multiplayer game. Set permissions for spawning objects, using tools, or perfor…

menu_bookDocumentation
May 12, 2026

s&box PostProcessGroup: Post-process categories

PostProcessGroup Enum Documentation PostProcessGroup is an enum that categorizes post-processing effects for organization in the spawn menu and asset browser. I…

menu_bookDocumentation
May 12, 2026

s&box ServerSettings: Server-controlled settings

ServerSettings Static Class ServerSettings is a static class that defines server-controlled settings replicated to all clients. These ConVars control game-wide …

menu_bookDocumentation
May 5, 2026

Code Generation - s&box Documentation

Official s&box documentation for Code Generation - compile-time code generation. Code Generation covers the source generator system in s&box. The generator crea…

terminalCode Example
May 11, 2026

UIDecal Component - Render Razor UI as a Decal

A Render Component for s&box that allows you to project Razor UI onto surfaces as a Decal. Great for sticking UI onto rounded walls, curved surfaces, or any geo…

menu_bookDocumentation
May 4, 2026

s&box Hotload System: How Code Reloading Works, SkipHotload, ConVar Persistence, and NetworkObject.OnHotload

s&box Hotload System: How Code Reloading Works s&box supports live code reloading (hotload) without restarting the game. Understanding how it works helps avoid …

menu_bookDocumentation
May 5, 2026

Console Variables - s&box Documentation

Official s&box documentation for Console Variables (ConVar) and Console Commands (ConCmd). ConVar creates variables that can be modified through the console and…

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 20, 2026

Hotloading Pitfalls: Default Values, Types, Delegates, and Optimization

s&box hotloads code changes live when you save or files. Understanding the pitfalls helps avoid subtle bugs during development. How It Works IL Hotload (Fast): …

menu_bookDocumentation
May 5, 2026

Unit Tests - s&box Documentation

Official s&box documentation for Unit Tests - automated testing. Unit Tests covers writing and running tests for s&box code. Tests can verify component behavior…

menu_bookDocumentation
May 20, 2026

Navigation: Recast NavMesh Generation and Pathfinding in s&box

s&box implements Recast Navigation (the industry standard used in Unreal, Unity, and Godot) for navmesh generation and navigation agents. What is a NavMesh? A s…

menu_bookDocumentation
May 20, 2026

Hotloading: Live Code Reload Without Editor Restart in s&box

s&box hotloading recompiles and live-reloads code when you save or files, without restarting the editor. How It Works IL Hotload (Fast): If only method bodies c…

menu_bookDocumentation
May 5, 2026

Binary Serialization - s&box Documentation

Official s&box documentation for Binary Serialization - efficient data storage. Binary Serialization saves data in compact binary format. The system handles ver…

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…