# Add a worker machine

> Give Firetower a machine on which it can run agents.

Source: https://usefiretower.com/docs/machines

## Before you start

Use a separate worker machine running macOS, Linux or Linux inside WSL2. Enable SSH and make sure the control plane can reach it.

Prepare an SSH account with the file and network access your agents need. Keep it separate from your control-plane server.

Screenshots show the desktop app with sample data.

## 1\. Open Machines

In the desktop app, select **Machines** in the sidebar. Select **Add a machine** to open the connection form.

![Open Machines and select Add a machine](https://usefiretower.com/product/setup-machine-page-light.webp)

Open Machines and select Add a machine. Select to enlarge.

## 2\. Enter the machine details

Enter the worker’s address, SSH account and a recognizable name in the connection form.

![Enter the worker’s address, SSH account and name](https://usefiretower.com/product/setup-machine-address-light.webp)

Enter the worker’s address, SSH account and name. Select to enlarge.

## 3\. Authorize Firetower’s SSH key

Copy the public key shown in the app. Add it to the worker account’s `~/.ssh/authorized_keys`, or register it through your cloud provider.

The expandable instructions show the command to use. Return to the app and select **Add it**. Firetower checks the SSH connection.

![Expand the SSH key instructions before connecting](https://usefiretower.com/product/setup-machine-key-light.webp)

Expand the SSH key instructions before connecting. Select to enlarge.

## 4\. Install the worker

Once SSH connects, select **Install the worker**. Keep the app open while Firetower installs it and reconnects.

![SSH connected: install the worker from the app](https://usefiretower.com/product/setup-machine-install-light.webp)

SSH connected: install the worker from the app. Select to enlarge.

## 5\. Install your agents

Choose the agents this machine should run. Select **Install Claude Code**, **Install Codex** or another available agent. Wait for the checkmarks, then select **Done**.

![Choose agents and wait for installation to finish](https://usefiretower.com/product/setup-machine-agents-light.webp)

Choose agents and wait for installation to finish. Select to enlarge.

## 6\. Check readiness in the app

Expand the machine’s row. Look for **Ready**, green checks for SSH, the worker and required tools, and an installed agent under **Agents**.

If a check fails, follow the remedy shown in the app, then select **check again**. System packages that require administrator access must be installed on the worker by its operator.

![Ready: the worker checks and installed agents are green](https://usefiretower.com/product/setup-machine-ready-light.webp)

Ready: the worker checks and installed agents are green. Select to enlarge.

Next: [connect an agent account](https://usefiretower.com/docs/accounts).