Overview

How the MusterBox platform, SDK, and public API fit together.

MusterBox is a tournament and matchmaking platform with a secure purchase layer. The developer platform is the integration surface for games that run inside MusterBox.

The pieces

MusterBox SDK (native, Rust core)

A single Rust core library that is packaged for every supported engine and platform. Version 1.0.0. The SDK provides:

• configuration with profile files and validation,
• session lifecycle: initialize → start → authenticate → submit events,
• background event flushing with offline buffering,
• a realtime event plane with session, wallet, and status events,
• a secure purchase client with environment-integrity pre-flight,
• diagnostics and health reporting.

Web SDK (@musterbox/sdk-js + @musterbox/sdk-wasm)

A browser build of the core compiled to WebAssembly. API is camelCase and mirrors the native surface: createMusterBox, authenticate, refreshToken, logout, submitEvent, tick, pollEvents, getStatus, getDiagnostics, and per-instance lifecycle management.

Public API

The wire contract the SDK drives. See the API reference.

Environments

The base URL selects the environment:

Environment	Base URL	Purpose
local	http://localhost:8081	Local backend for development
sandbox	https://sandbox-api.musterbox.dev	Pre-production validation
staging	https://staging-api.musterbox.dev	Pre-release integration
production	https://api.musterbox.com	Live traffic

Credentials (game keys) are scoped to a game and an environment, and are origin-locked where applicable.

Supported platforms

Platform	Adapter package	Version
Unity	musterbox-unity	1.0.0 (Unity 2020.3+)
Godot	musterbox-godot (GDExtension)	1.0.0 (Godot 4.2+)
Unreal Engine	MusterBox plugin	1.0.0 (UE 5.3/5.4)
Bevy	Rust plugin	1.0.0 (Bevy 0.19)
Cocos Creator	TypeScript binding	1.0.0 (3.8+)
Defold	Defold library	1.0.0 (1.6.5+)
Web	@musterbox/sdk-js / @musterbox/sdk-ts / @musterbox/sdk-wasm	1.0.0

SDK identity

Field	Value
SDK version	1.0.0
C ABI version	1.2.0
Protocol version	1.0
Config schema	1
License	MIT OR Apache-2.0

Where a game fits

 MusterBox backend                    Your game
 ┌───────────────────────┐    ┌────────────────────────────┐
 │ Auth   (user/login)   │◄───┤  mustMusterBox()           │
 │ Game SDK (sessions)   │◄───┤  openSession({matchId})    │
 │ Game SDK (results)    │◄───┤  submitResult(...)         │
 │ Security (purchases)  │◄───┤  PurchaseClient.mint/verify│
 │ Event plane           │◄─ ─┤  submitEvent → pollEvents  │
 └───────────────────────┘    └────────────────────────────┘
        ▲                                ▲
        │         both participants      │
        │         claim the same         │
        └──────  result to finalize  ────┘

See Architecture for the full flow.