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Slack: Authentication guide

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

Before you begin

Supermetrics connects directly to your Slack workspace. When you first connect it, it'll ask for permission to view:

  • Content and information about channels and conversations
  • Content and information about your workspace

If you have any questions about how we handle and secure your data, read our security and privacy policy.

Query types

Supermetrics offers 3 report types for Slack: channels, users, and groups.

For Excel users

If your team uses Supermetrics for Excel, you’ll see different options for managing and sharing data source connections in that destination. Learn more.


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. Click Create query.
  4. Under Data source, select Slack.
  5. Click Start.
  6. If you're not logged into a Slack workspace, enter your Slack URL and credentials.
  7. Click Allow.
  8. Under Select accounts, select the accounts.


  • 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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