Umano integrates with CircleCI using a Personal API Token.
Generate API Token
Go to your CircleCI Settings > Personal API Tokens
Click on "Create New Token" and give it a name (eg. "Umano")
Copy the generated token and return to Umano
Add Token to Umano
In Umano, go to Settings > Integrations, click on "Connect a Tool" and select CircleCI
Enter the API Token in the field provided and click on "Add tool"
Success! Your CircleCI account is now connected.