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These docs are for v1-2. Click to read the latest docs for v2025-04-15.

Migration resources

Audit your Klaviyo API usage

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

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

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.

Updated 5 months ago

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