# Attributes

Runs support [**Custom Attributes**](/features/custom-attributes.md) that can be used to add user-defined data fields. Run custom attributes can be set while creating a run and changed at any time through the **Run Summary** view.

![Define run attributes during run creation ](/files/aeY14BoeismCIlwcCPtA)

![Run attributes can be viewed and adjusted in Run Summary](/files/Ia08nig6WShlWySKpSg4)

{% hint style="info" %}
Run custom attributes can be edited at any time
{% endhint %}


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