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API Reference

Create Data Source

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This endpoint is in beta and subject to change.

A beta revision header (2025-04-15.pre) is required to use our beta APIs. Klaviyo APIs in beta are not intended for use in production. See our versioning and deprecation policy for more information.

Create a new data source in an account

Rate limits:
Burst: 3/s
Steady: 60/m

Scopes:
custom-objects:write

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