TestFairy can collect additional information from your session, which can help you generate better insights.

In order to set a unique identifier for your user in the current session, please see the document on Identifying Your Users.


TestFairy.setAttribute("<key>", "value");

The first value is a string key to help you search for the attribute in your session. The second paramter, value, is any string value for the attribute associated with the session. Neither value can be nil. These attributes are available later in the session recording page, are available via API, and are searchable.


TestFairy.setAttribute("name","John Snow");

Adding these lines will mark this session with the values above, so when you review the recording, you have more information about the person running the app.


  1. setAttribute may be called many times.
  2. You may call setAttribute before or after begin.
  3. You can only store a maximum of 64 keys. The keys can be a maximum of 64 characters. The values can have a maximum of 1000 characters.