Make sure you're logged into Transposit, then click this link to open the CircleCI settings dialog, enter a name, and click Save.
In the Integrations list, where your key is now included, click Authenticate.
Provide your CircleCI API token.
Useful link:
Now that you've configured your integration, add one or more of the integration's actions to an automation, test the automation, and then add the automation to an incident type.