Installation
Install the nt command, set your AI key, and check that everything works.
Getting NT ready takes three small steps: install it, set your AI key, and check it works.
Step 1: Install the CLI
NT is a command called nt. Install it with your package manager:
npm install -g @age.nt/ntpnpm add -g @age.nt/ntyarn global add @age.nt/ntbun add -g @age.nt/ntThe -g means "global", so you can use the nt command from any folder.
You need Node 22.18 or newer
NT runs on Node.js. Check your version with node --version. If it is older than 22.18, update
Node first.
Step 2: Set your AI key
NT talks to a real AI model, so it needs a key. If you are using Anthropic (Claude), set it like this:
export ANTHROPIC_API_KEY=sk-ant-...You only need this when you actually run an agent. Checking and inspecting your files works without a key.
Step 3: Check it works
nt --help
nt --versionIf you see the help text and a version number, you are ready.
Downloads
nt on npm
The command you install to build and run agents.
VS Code extension
Color and smart hints for .nt files. Search “NT” in VS Code.
Other IDEs
The same extension on Open VSX, for Cursor, Windsurf, and VSCodium.
Source on GitHub
The full project: engine, CLI, editor extension, and examples.