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Klaviyo: Authentication guide

This guide will walk you through how to authenticate or reauthenticate Klaviyo in Supermetrics for Google Sheets, Data Studio, and Excel, as well as data warehouse destinations like Google Cloud Storage, BigQuery, and the Supermetrics API. 

Before you begin

To connect Supermetrics to Klaviyo, you need a Klaviyo account with an Admin, Owner, or Manager user role level. Learn more about user management and privileges in Klaviyo's documentation

You'll also need to generate an API key before you can connect. Follow Klaviyo's instructions to generate your API key.


Google Sheets Data Studio  Excel Data integrations
Before you can authenticate the data source in Google Sheets, you need to install the Supermetrics add-on.
  1. Open a new Google Sheets file. 
  2. Navigate to ExtensionsSupermetricsLaunch to open the Supermetrics sidebar.
  3. Under Data source, select Klaviyo.
  4. Enter your API key.
  5. Click Start
  6. Select the accounts you'd like to use in your reporting.

When you're ready, learn how to create your first Supermetrics query with Klaviyo.


  • If you encounter an authentication error such as “authentication failed”, “you need to reauthenticate” or similar, see this guide
  • If you encounter a permission error such as “user permission denied” or similar, follow this guide.

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