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API Reference

Get Data Sources

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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.

Get all data sources in an account.

Custom objects is a paid feature in Klaviyo, only available to customers with a paid email plan. To request access to custom objects, submit this form.

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

Scopes:
custom-objects:read

Query Params
fields[data-source]
array of strings
fields[data-source]
integer
1 to 100
Defaults to 20

Default: 20. Min: 1. Max: 100.

Headers
string
required
Defaults to 2025-04-15.pre

API endpoint revision (format: YYYY-MM-DD[.suffix])

Responses

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