generated: '2026-07-11' method: derived source: openapi/klaviyo-openapi.json summary: types: - apiKey api_key_in: - header schemes: - name: Klaviyo-API-Key type: apiKey in: header parameter: Authorization description: Private key authentication for /api/ endpoints is performed by setting the `Authorization` header to `Klaviyo-API-Key your-private-api-key`
For more information please visit https://developers.klaviyo.com/en/v2026-04-15/reference/api-overview#authentication sources: - openapi/klaviyo-openapi.json