install.

Run the one-liner. It installs Ollama if needed, sets Saturn up in an isolated environment, pulls the small local model, and puts the saturn command on your PATH.

Open a new terminal so the updated PATH takes effect, then:

Launch it from the folder you want it to work in. The first run opens /models: it reads your hardware, recommends a model size that fits and runs at a usable speed, and pulls it if you say yes. Then it offers three quick questions (what to call you, what you do, and anything it should never do) so it knows you from the first request. Type /help for every command.

On macOS, the first time Saturn reaches an app, macOS asks whether your terminal may control it. Reading your Messages history also needs Full Disk Access for that terminal.