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 3, 2026

Sandbox.UI.Panel

Sandbox.UI.Panel Base class for UI panels. Overview Panel is the base class for all UI in s&box. Create panels using Razor (.razor) files or dynamically in code…

menu_bookDocumentation
May 3, 2026

Editor Widgets

Editor Widgets Build custom editor UI using Widgets (different from in-game Panels). Creating a Widget Widget as Window Widget as Child Dockable Widget Asset Ed…

terminalCode Example
May 12, 2026

s&box context menu with submenus and auto-positioning

s&box Context Menu with Submenus and Auto-Positioning This example shows a context menu system using s&box's Panel, Screen, and layout system with submenu build…

menu_bookDocumentation
May 5, 2026

Custom Editors - s&box Editor Documentation

Custom Editors Custom editors let you create specialized inspector interfaces for your components and assets. Build custom widgets, property drawers, and full i…

menu_bookDocumentation
May 3, 2026

Custom Editors

Custom Editors Create custom editor widgets for your classes, structs, and assets. ControlWidget (Property Editor) Create custom property editors using : Attrib…

menu_bookDocumentation
May 5, 2026

Razor Panels - s&box Documentation

Official s&box documentation for Razor Panels - the UI layout system. Razor Panels use a familiar HTML-like syntax with C# code-behind for building game interfa…

menu_bookDocumentation
May 20, 2026

HudPainter: Immediate-Mode HUD Drawing in s&box

Each has a property (HudPainter) for immediate-mode drawing onto the screen. More efficient than UI panels since there's no layout, stylesheets, or interactivit…

menu_bookDocumentation
May 20, 2026

Shader Graph Getting Started: Visual Shader Editor in s&box

s&box Shader Graph is a visual scripting language that compiles to shader code. Accessible to beginners and useful for rapid prototyping by experienced shader d…

menu_bookDocumentation
May 5, 2026

Movie Maker - s&box Documentation

Official s&box documentation for the Movie Maker - cinematic recording and editing. Movie Maker provides tools for creating cinematic sequences and gameplay rec…

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…

terminalCode Example
May 5, 2026

VirtualGrid — efficiently rendering large scrollable lists in s&box UI

VirtualGrid — Efficiently Rendering Large Lists in UI is a s&box UI panel that virtualizes a large collection — only the visible cells are created in the DOM. S…

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 20, 2026

Binary Serialization: BlobData for Large GameResource Data Storage

When JSON files grow too large in s&box, you can store data as a binary blob using the class. This works with GameResource assets and provides custom serializat…

menu_bookDocumentation
May 20, 2026

UI Style Properties: CSS Reference with Custom Pseudo-Classes and Sound Events

s&box UI styling follows web CSS conventions with some differences. Everything is flex by default. Key custom properties include / for hover/click sounds, , and…