Decentraland SDK7 Scene Development

Runtime constraint: Decentraland runs in a QuickJS sandbox. No Node.js APIs (fs, http, path, process). Use executeTask() + fetch() for async work.

Agent Behavioral Guidelines

Before taking any significant action, check whether it falls into one of the three categories below and confirm with the user first.

How to ask: Phrase the question in plain, non-technical language that describes what will happen to the scene, not the underlying command.

Good: "Should I download this tree model into your scene assets?" Bad: "Run curl https://… -o assets/scene/Models/tree.glb?"

1. Changing parcel count or layout

Any modification to scene.parcels in scene.json changes the scene's coordinate space. Entities near the current boundary may end up outside (invisible) or inside the wrong parcel. The user may also have a deployment slot in mind and parcel count needs to match it. Describe the change and its effect before acting:

"To fit the scene you described, I'd need to expand from 1 parcel (16×16 m) to a 2×1 layout (32×16 m). This changes the coordinate bounds for every entity. Should I go ahead?"