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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 "IsValid()" 11 results closeClear
menu_bookDocumentation
May 20, 2026

IsValid: Safe Null and Destroyed Object Checking in s&box

In s&box, destroying a or doesn't erase the C# reference — the variable still holds a non-null but dead object. Use instead of null checks. Common Patterns Guar…

menu_bookDocumentation
May 4, 2026

Component Lifecycle: Full Callback Order — OnAwake, OnEnabled, OnStart, OnUpdate, OnFixedUpdate, OnDisabled, OnDestroy

Component Lifecycle: Full Callback Order s&box components have a well-defined lifecycle. Understanding the exact order prevents subtle bugs. Callback Order Key …

terminalCode Example
May 4, 2026

Sandbox: LimitsSystem — server-side per-player spawn and tool limits via ConVars

LimitsSystem — Server-Side Spawn and Tool Limits is a that enforces configurable per-player limits on props, constraints, and tool entities. It listens to and .…

menu_bookDocumentation
May 20, 2026

IsValid Pattern: Safe Null and Destroyed Object Checks

Destroying a or doesn't erase the C# reference — the variable still holds a non-null but dead object. A plain check will pass on destroyed objects, leading to e…

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 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 …

groupsCommunity
May 5, 2026

Common s&box component gotchas — physics, networking, scene, and rendering pitfalls

Common s&box Component Gotchas Practical pitfalls that catch most new s&box developers. Physics Rigidbody + CharacterController on the same GO — don't do it. Th…

codeAPI Reference
May 3, 2026

Player Component with Static Accessors

Player Component Main player component that manages health, damage, camera, and interfaces with the inventory system. Static Accessors Key Properties HUD Visibi…

groupsCommunity
May 3, 2026

Common Pitfalls and How to Avoid Them

s&box Common Pitfalls and How to Avoid Them Community-compiled list of frequently encountered issues and their solutions, based on Discord support channels and …

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 3, 2026

Physgun Grab State with Permission Checks

Physgun Grab State Pattern Implementation pattern for physgun object grabbing with ownership checks and IPhysgunEvent permissions. Key Features Sync'd GrabState…