> For the complete documentation index, see [llms.txt](https://docs.sonsofphp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sonsofphp.com/contracts/state-machine.md).

# State Machine

```shell
composer require sonsofphp/state-machine-contract
```