Access your account, select the avatar in the top right corner, and from the dropdown navigate to Account Security > API Management.

Select Create API.

Choose API-Based Trading.

Label the key accordingly and create a Passphrase.

Select General only for API restrictions.

Whitelist the below IP Addresses:

Select Next and then note down the Key, Secret, and Passphrase to input in the key, secret, and passphrase fields in Otto.