Automate the API lifecycle by generating an Open API (formerly known as Swagger) specification. This tool helps you generate Open API spec from existing APIs. You can use an OpenAPI spec to generate documentation using SmartDocs, or to automatically create test cases using Apigee Test, or to create an interactive test client, or even to automatically create API Proxies in Apigee Edge. Having an Open API spec document saves a lot of time for the developers of APIs & improves re-usability.