The add-in models entities in the Klaviyo API as an easy-to-use SQL database, using tables, views, and stored procedures. These are defined in schema files, which are simple, easy-to-read text files that define the structure and organization of data. Live connectivity to these objects means any changes to your Klaviyo account are immediately reflected when using the add-in.

The add-in exposes the following schemas:

• See the Klaviyo 2026-01-15 Data Model for the available entities in the current default API revision.
• See the Klaviyo 2025-04-15 Data Model (Deprecated) for the available entities in the deprecated 2025-04-15 API revision.