INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, PROGRAM AND STORAGE MEDIUM

The present invention is to ensure information safety of a user of service using API. An information processing device issues a service code in response to an API use request. The API use request relates to service using an application program that uses API and is transmitted from an application provider device. The information processing device makes service identification information and use API information correspond to the service code and registers the service identification information, the use API information, and the service code. According to user-specific information from the application provider, unapproved license information is issued for each application user. Approval of this license information by the application user side registers the license approval information. At service execution, authentication is performed based on the service code and the license information. When the authentication is passed, API use is permitted.