This tutorial demonstrates how to retrieve credentials on Slack developer website for use with the Slack API. This tutorial covers (i) creating your application; (ii) retrieving your OAuth 2.0 client ID and client secret; as well as (iii) configuring your application scopes.

Steps to follow:

1. Sign in to your Slack Developer account - https://api.slack.com/
2. In "Your Apps", click on "Create New App"
3. Fill the form with your application details (name, workspace).
4. Open the "OAuth & Permissions" section to configure the OAuth
5. Register the following redirect URLs `https://int.bearer.sh/v2/auth/callback`
6. Finally, select the scopes you want to use.
7. That's it!