Enable and Configure the Google Chat API

Enabling the Google Chat API

• Login to GCP.
• Open the project where the service account entered in Step 2 exists.
• In the navigation menu on the left hand side, Go to APIs and services > Enabled APIs and services.
• Click on + ENABLE APIS AND SERVICES.
• Search for "Google Chat API".
• Click on Google Chat API.

• Click on Enable. If this is already enabled, you will see "API Enabled" on this page.

Configure the Google Chat API Chat App

• On the Google Chat API page, click the MANAGE option.

• Select the Configuration tab and configure the app as below.
  • App Status: LIVE - available to users
  • App name: This will be the name of the app posting the messages that the users see in the destination spaces.
  • Avatar URL: This is the Avatar image of the app posting the messages that the users see in the destination spaces. 
  • Enable Interactive Features: On
  • Receive one-to-one messages: On
  • Join spaces and group conversations: On
  • Connection Settings: App URL
  • App URL: Enter your destination domain (e.g. https://destination.com)
  • Make this chat app available to specific people and groups: On
  • Enter the email address of the destination admin account specified in Step 2 of your configuration.

Enable the Chat API Scopes for the Service Account

• Login to the Google Workspace Admin Console.
• Go to Security > Access and data Control > API Controls.
• In the Domain-wide delegation section click on MANAGE DOMAIN-WIDE DELEGATION.
• Find the entry for the service account being used during the migration. Hover over this and click on Edit.
• Add the below scopes.
  • https://www.googleapis.com/auth/chat.bot,
  • https://www.googleapis.com/auth/chat.spaces,
  • https://www.googleapis.com/auth/chat.memberships,
  • https://www.googleapis.com/auth/chat.memberships.app,
  • https://www.googleapis.com/auth/chat.messages,
  • https://www.googleapis.com/auth/chat.import,
• Click on Authorise.