What is OpenAPI
The OpenAPI Specification is a specification for machine-readable interface files for describing, producing, consuming, and visualizing RESTful web services.
With OpenAPI, developers can access and use remote web service through one common specification.
The OpenAPI definition for Thesaurus API can be explored using the Swagger Hub interface.
You can test the Thesaurus API request with the 'try it out' option and pressing the 'execute' button.
In order to run your own specific queries you need your own application key.