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Update Universal Content

patch
https://a.klaviyo.com/api/template-universal-content/

šŸš§

This endpoint is in beta and subject to change.

A beta revision header (2026-07-15.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.

Update universal content. The definition field always replaces the entire
content definition (no attribute-level merge); omit it for a rename-only update.

Rate limits:
Burst: 75/s
Steady: 750/m

Scopes:
templates:write

OpenAPI Spec

Path Params
string
required

The ID of the template universal content

Query Params
fields[template-universal-content]
array of strings

For more information please visit https://developers.klaviyo.com/en/v2026-07-15.pre/reference/api-overview#sparse-fieldsets

fields[template-universal-content]
Body Params

Update a universal content by ID, with full v1 write parity (every
block/subblock type, plus Section)

data
object
required
Headers
string
required
Defaults to 2026-07-15.pre

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

Responses

Updated 42 minutes ago

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