You can generate the API token in the Criteo’s user interface. To do this, navigate to Setup → User → API Information.
To generate your API-token, you’ll need to provide your First Name, Last Name, and your email address.
Once you fill out the form and click “Generate API Token”, your request status will be set to pending. To complete API activation, click on the activation link in the email sent to the email address you’ve provided.
Please note: To generate your API, you need to register using a different email address from the one used to register your user profile. Criteo recommends adding an email address that is managed by more than one users as you can only generate one API.