Welcome to the API(v1.0) for Dynamics 365 Business Central
With Dynamics 365 you can create Connect apps. Connect apps establishes a point-to-point connection between Dynamics 365 Business Central and a 3rd party solution or service and is typically created using standard REST API to interchange data. Any coding language capable of calling REST APIs can be used to develop your Connect app. For more information to get started on Connect apps, see Developing Connect Apps for Dynamics 365 Business Central.
For information about enabling APIs for Dynamics NAV see Enabling the APIs for Microsoft Dynamics NAV.