> 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/skrypty-scriptservice.md).

# Scripts (ScriptService)

Lightweight script services involve moving logic that does not require connection to services from backend code to the request. Scripts can be written in the repository, and then used in the request.\
Script code should be written in **plain JavaScript (ES6 or earlier)**. 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" %} <mark style="color:$info;">Timeout</mark>

<mark style="color:$info;">**NOTE!**</mark> <mark style="color:$info;">Script execution time is limited to</mark> <mark style="color:$info;">**1s**</mark><mark style="color:$info;">,</mark> <mark style="color:$info;">to eliminate cases of an infinite loop/unbounded recursion. After one second is exceeded, an exception will be thrown.</mark>
{% endhint %}

{% hint style="info" %}
Downloaded script services are cached. The lifetime is controlled by the configuration key **repository\_script\_service\_cache\_ttl** and **settings\["REPOSITORY\_SCRIPT\_SERVICE\_CACHE\_TTL"]**
{% endhint %}


---

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