Open API-A standard, language-agnostic interface to RESTful APIs

The OpenAPI Specification (OAS) defines a standard, language-agnostic interface to RESTful APIs which allows both humans and computers to discover and understand the capabilities of the service without access to source code, documentation, or through network traffic inspection. When properly defined, a consumer can understand and interact with the remote service with a minimal amount of implementation logic.

• The main advantage of using a standard definition is that the third-party users can interact with and understand the service with minimal implementation logic, as long as they are familiar with RESTful APIs basics.

• API specifications are either written in YAML or JSON, formats that are readable, and easy to learn for both machines and humans.