Stacked Insights

How to Add Custom Attributes

January 05, 2026

This guide offers instructions for adding custom attributes while matching your cards on Heystack.

1. Click “Stacks.”

2. Click the settings icon.

3. Click this field.

4. Select [CUSTOM_TRAITS] – Attributes.

Repeat process under “Listing Title Secondary”

5. Click “UPDATE CLIENT.”

6. Go to your stack.

7. Click “Options.”

8. Click the “Trait(s)” field and enter your custom attribute.

9. Click “Save Trait Info.”

10. Match your card.

11. Your custom trait will appear in the title of the matched card.