After adding a new Redash widget from your dashboard, enter your Redash URL. It's the one you visit to use Redash.
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For example, https://app.redash.io/company_name or https://redash.example.com. Be sure to include https:// in the URL.

Next, enter your API key. This can be found by clicking your username in the top right of Redash, then Edit profile.

Click on the Connect button to proceed to the widget configuration screen. For help with configuring your Redash widgets, see our guide to creating visualizations from datasets.