The Terminal Is the Original Operating System

The most powerful surface on your machine

Strip away the windows, the icons, the menus, and what's left is the terminal, the surface where you can already do anything a computer can do. Install, build, deploy, query, automate, orchestrate. It was the first operating system's interface, and it never lost its reach; we just built friendlier things on top of it.

That reach is exactly what an agent needs. An agent that can only edit files is a clever autocomplete. An agent with a terminal can run the machine.

Friendliness traded away power

Every layer we added for approachability, the GUI, the IDE, the web app, made computers easier and also narrower. Each one is a curated set of things you're allowed to do, quickly. The terminal stayed the place where the full set lived, at the cost of a blinking cursor and a learning curve.

Agents change that trade. You don't need to memorize flags if you can say what you want and a capable agent composes the command, runs it, watches the output, and iterates. The power of the terminal, with the approachability of conversation.

Harmony: the terminal, with a fleet behind it

Harmony keeps the terminal as the primitive and puts a fleet of agents behind it. Speak or type your intent; the resident Harmony agent routes the work across the models and agents you've connected; durable panes hold the state so nothing is lost when you close the lid.

• Voice in and out, fully on-device (Whisper and Kokoro), so you can talk to your machine
• Durable sessions that survive reboots
• Agent-to-agent handoffs for work that spans several steps
• Your own models and agents, no cloud host in the loop

A base layer, not an app

This is why we call Harmony a base layer rather than an app. An app sits on top of your operating system and asks permission. A base layer is where you and your agents actually run the machine, the terminal's reach, reorganized for a fleet.

The longer road is exactly what it sounds like: open Harmony and do anything on your computer, with agents doing the work. The oldest interface, pointed at the newest kind of worker.

See it on a real codebase: several agents, one monorepo.