Hello everyone, We are excited to announce the release of the *OpenAPI Tester add-on*! This new add-on contributes a view in Oxygen XML Editor that can be used as a testing tool for OpenAPI files. The tool provides capabilities to easily inspect OpenAPI request-responses, and make sure they work as expected. It is available for OpenAPI 3.0 (https://spec.openapis.org/oas/v3.0.3) in JSON format. To install the add-on, follow these instructions: * Go to *Help* > *Install new add-ons* to open an add-on selection dialog box. * Enter or paste https://www.oxygenxml.com/InstData/Addons/default/updateSite.xml in the *Show add-ons from* field or select it from the drop-down menu. * Select the *OpenAPI Tester* add-on and click *Next*. * Read the end-user license agreement. Then select the *I accept all terms of the end-user license agreement* option and click *Finish*. * Restart the application. To use the tool, select *OpenAPI Tester* from the *Tools* >*JSON Tools* menu. This opens a dialog box where you can specify the location of the OpenAPI file that you want to test. *Important:* The add-on is free and is compatible with any *Oxygen XML Editor/Developer version 24.0 and newer*. For more information on the OpenAPI Tester add-on, please make sure to check the following page: https://www.oxygenxml.com/doc/versions/24.0/ug-editor/topics/openapi-tester.... We hope you will find this new addition to the Oxygen add-on library useful and as always, your feedback is welcome! Best regards, Alin -- Alin Belu Oxygen XML Editor