Migration resources

Audit your Klaviyo API usage

Learn how to audit your API endpoint usage, so you can migrate to Klaviyo's newest APIs.

Comparison chart: v1/v2 to new endpoints

Learn about the differences between the v1/v2 legacy APIs and our new APIs.

Migration strategy

Learn how to migrate from v1/v2 legacy APIs to Klaviyo's new APIs.

2023-07-15 Relationships migration

Migrate to the standardized Relationships object released in the 2023-07-15 revision.

Migrate track, identify, and subscribe to our new APIs

Learn about major changes and what corresponding calls to use