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The OpenAPI Specification defines the interfaces for RESTful APIs, describing resources and operations in a format that is easily discoverable and understandable by both machines and humans. It is a common way to unify how an industry defines and describes APIs — the services fundamental to how applications talk to each other in today’s connected world.

Download OpenAPI Specification

More information about OpenAPI 3.0 can be found here:

  • https://github.com/OAI/OpenAPI-Specification
  • https://swagger.io/docs/specification/about/