> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aeolo.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Install the CLI

> Install and update the aeo command-line tool.

`aeo` is a single Go binary for macOS and Linux.

## Install

```bash theme={null}
curl -fsSL https://skills.aeolo.io | sh
```

Verify the binary:

```bash theme={null}
aeo --version
aeo --help
```

## Upgrade

```bash theme={null}
aeo update
```

## Environment variables

| Variable          | Purpose                                            |
| ----------------- | -------------------------------------------------- |
| `AEOLO_API_BASE`  | Override the API base URL. Defaults to production. |
| `AEOLO_API_KEY`   | Use an Aeolo token without reading local config.   |
| `AEOLO_DOMAIN_ID` | Force a domain for commands that need one.         |

The CLI stores browser-login credentials in `~/.config/aeo/config.json`.