Build a World with an AI Agent

AI coding agents such as Claude Code and Codex can build your world from a description, working in a Highrise Studio project you have open in Unity. This guide shows how to get started.

Step 1: Create and Open a Project

Create a project in Studio Hub and open it in Unity, as described in Getting Started.

When the project opens, Highrise Studio adds a CLAUDE.md and an AGENTS.md file to the project's folder. These files tell an agent how to work in the project.

Step 2: Start Your Agent

1. Open a terminal in the project's folder, for example Documents/Highrise Studio/Projects/My World.
2. Start Claude Code or Codex.
3. Describe the world you want, for example: "Build me a Highrise world where players race to collect coins."

What the Agent Does

The agent uses the project's launcher, Library/Highrise/hr. It runs Library/Highrise/hr hr_guide first, which teaches it how to build Highrise worlds, and then uses Highrise Studio's commands to edit scenes, write Lua scripts, and play-test the world in Unity.

Good to Know

• The commands need the Unity command line tools. If they are missing, the agent asks before installing them.
• Highrise Studio's commands only work while the project is open in Unity. If Unity is closed, the agent runs Library/Highrise/hr open to open it.
• If Unity asks for permission or shows a dialog, answer it: the agent can't.

When your world is ready, test it with the Play button in Unity and publish it as described in Getting Started.