> For the complete documentation index, see [llms.txt](https://docs.eximee.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.eximee.com/documentation/documentation-en/budowanie-aplikacji/logika-biznesowa/scriptcode/walidatory-skryptowe-validationscript.md).

# Script validators (validationScript)

Lightweight script validators are scripts that do not require connection to external services. Scripts can be written in the repository and then used on the request.

The script code should be written in **plain JavaScript (ES6 or newer)**. The code must be compatible with the version of the JavaScript engine **provided by Rhino** (<http://mozilla.github.io/rhino/compat/engines.html>). Additionally **have been disabled** such elements as "eval".

{% hint style="danger" %}
**Timeout**

Warning! The script execution time is limited to **1 second**, to eliminate cases of use of an infinite loop/unending recursion. After exceeding one second, an exception will be thrown.
{% endhint %}

{% hint style="info" %}
The script validators are cached after retrieval. The lifetime is controlled by the configuration key **repository\_script\_validator\_cache\_ttl** and **settings\["REPOSITORY\_SCRIPT\_VALIDATOR\_CACHE\_TTL"]**
{% endhint %}


---

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