OverDrive is a paid-for service. You must first contact OverDrive directly for pricing and subscription information. Enabling this service will integrate Overdrive results in your OPAC searches. You will have to apply for these 3 pieces of information through an application as an API developer. Overdrive API applications are evaluated once a week so you may not be able to use this feature immediately after signing up. To learn more please contact your OverDrive representative.