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

# CLI

> The iii CLI: run projects, trigger functions, and manage iii itself.

Ask the installed binary for its exact command and flag surface:

```bash theme={"theme":{"light":"catppuccin-latte","dark":"dark-plus"}}
iii --help
iii <subcommand> --help
```

The generated [CLI reference](../cli-reference/index) publishes the same surface.

## Subcommands

| Subcommand    | What it does                                                                                        |
| ------------- | --------------------------------------------------------------------------------------------------- |
| `iii compose` | Run the Compose daemon, prepare registry packages with `build`, or supervise a project with `--up`. |
| `iii trigger` | Invoke a registered function on a running engine.                                                   |
| `iii project` | Scaffold projects and generate Docker assets.                                                       |
| `iii console` | Launch the iii web console.                                                                         |
| `iii cloud`   | Manage hosted iii deployments.                                                                      |
| `iii update`  | Update iii and its managed support binaries.                                                        |

`iii worker` was removed in 0.23. Add and manage project workers through `compose::*`; see
[Workers](./workers). The `worker::*` function surface was removed with it.

Running `iii` with no subcommand starts only the engine from `./config.yaml` or `--config`. Use
`iii compose --up` for the normal project lifecycle:

```bash theme={"theme":{"light":"catppuccin-latte","dark":"dark-plus"}}
iii compose build --file worker-compose.yaml
iii compose --namespace dev --up --file worker-compose.yaml
```

## Managing iii Cloud deployments

The `iii cloud` command group manages hosted deployments. See
[Deployment](./deployment#iii-cloud-deployments).

<Note>iii Cloud availability may vary by account and release.</Note>

## Updating iii

`iii update` updates iii and support binaries installed with it. Worker package versions are pinned
inside `worker-compose.yaml`; update one with `compose::update`:

```bash theme={"theme":{"light":"catppuccin-latte","dark":"dark-plus"}}
iii trigger -n dev compose::update worker=state
iii trigger -n dev compose::update worker=state@0.22.2
```

Run `iii update --list-targets` to list the binaries the installer can update.