Welcome to the Kaigen closed beta

Hi and welcome to the Kaigen closed beta!

Thanks for being here. Kaigen is the manifestation of a strong desire to build a technology stack that prioritizes software quality without sacrificing productivity. It's the engine I always wanted to use.

You're among the first people invited to try it out. I sincerely hope you enjoy it.

Gabriel

Get set up

Kaigen is made to work with AI, you can set it up from the command line or Kaigen Studio, with or without your AI agent. Once you're set up, it's recommended to start from one of the available application templates.

With your AI agent

Install the Kaigen skill in Claude Code, Codex or any other agent (Cursor, Copilot, Gemini CLI, Windsurf), then ask it: "set up Kaigen, my key is KGEN-…"

/plugin marketplace add Kaigen-Technologies/kaigen-plugins
/plugin install kaigen@kaigen

codex plugin marketplace add Kaigen-Technologies/kaigen-plugins

npx skills add https://api.kaigen3d.com/skill.md -g

With Kaigen Studio

Download it, paste your licence key, install an engine and pick a template.

From the command line

curl -fsSL https://api.kaigen3d.com/install.sh | sh
export PATH="$HOME/.kaigen/bin:$PATH"

irm https://api.kaigen3d.com/install.ps1 | iex
[Environment]::SetEnvironmentVariable('PATH', [Environment]::GetEnvironmentVariable('PATH','User') + ';' + "$env:LOCALAPPDATA\kaigen\bin", 'User')

kaigen activate KGEN-XXXX-XXXX-XXXX
kaigen engine install
kaigen new my_game --template starting-template
cd my_game && hz/hzbuild run

The full setup guide covers every step and flag. It's written so you can hand it straight to your AI: give it the markdown version.

Where to go next

Once you have a project open, the next video walks through writing an application with the templates. That's where most people should go. The other two are for when you're curious: the philosophy behind the engine, and the technical details of how it works.

1. 01WelcomeWelcome to the beta, and how to get set up.You're watching this one
2. 02Writing applicationsStart from a template, and let your AI show you around.About 13 min
3. 03The Kaigen philosophyThe four ideas the engine is built on. For the curious.Coming soon
4. 04Technical detailsHow the engine works under the hood. For the curious.Coming soon

Documentation

The engine is fully indexed and documented for AI agents. Ask your agent anything about how the engine works, and it answers from the engine's own documentation.

Human documentation, with the core concepts and the core API of each system, is coming soon. You can see what it will cover in the sidebar.