![[8.5.5.8 or later]](../images/ng_v8558.gif)
Developing REST API definition files
You can create Representational State Transfer (REST) application programming interface (API) definition files in a web module for discovery on a Liberty server. WebSphere Developer tools supports the Swagger 2.0 syntax, which is based on the JSON syntax, for defining the JSON definition files.
About this task
Important: Applicable to Liberty, Liberty Core
For more information about Swagger 2.0, see Swagger RESTful API Documentation Specification.