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Update Universal Content

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

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/v2026-10-15/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 2026-10-15

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

Responses

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