📂 Reference > Specifications

# Oracle Integration Specifications (OIS)

The ois JSON object, in the config.json file that defines an Airnode, is an integral part of an Airnode's understanding of an API's specification and its endpoints. OIS provide a description of API endpoints and maps Airnode endpoints to them. There can be more than one OIS object in the config.json file as Airnode can serve endpoints from more than one API.

Learn more about Oracle Integration Specifications (OIS) in its versioned document set.

Last Updated: 8/9/2022, 3:28:25 PM