Create a New Decentraland SDK7 Scene

Runtime constraint: Decentraland runs in a QuickJS sandbox. No Node.js APIs (fs, http, path, process). Use the SDK's executeTask() + fetch() for async work. See the scene-runtime skill for details.

⚠ CRITICAL RULE — Read before generating any code

NEVER put initial scene entities in src/index.ts.

Every entity that exists when the scene loads — models, primitives, lights, text, audio — MUST be declared in assets/scene/main.composite.

src/index.ts is ONLY for:

• Adding behavior/interactivity to entities fetched from the composite
• Entities spawned dynamically at runtime (projectiles, enemies, clones, etc.)
• Systems and game logic

If you find yourself writing engine.addEntity() for a piece of scenery or a static prop, stop — put it in the composite instead.

When the user wants to create a new scene, follow these steps: