The Myths on OpenAPI and Open API

As the world of application programming interfaces (APIs) continues to grow, it’s important to understand the differences between the various standards and specifications that are used. One common source of confusion is the difference between OpenAPI and Open API. In this article, we’ll explore the difference between these two terms and what they each mean.

What is OpenAPI?

OpenAPI, formerly known as Swagger, is a specification for building and documenting RESTful APIs. It provides a standard way to describe API operations and models in a format that can be easily understood by developers. OpenAPI includes features such as endpoint descriptions, request and response structures, and example payloads. It is designed to promote interoperability between different APIs and reduce the complexity of API development.

OpenAPI is maintained by the OpenAPI Initiative, a consortium of industry leaders who are committed to creating, evolving, and promoting the OpenAPI specification. The OpenAPI Initiative is hosted by the Linux Foundation and has a large community of contributors and users.

What is Open API – with a space in between?

On the other hand, Open API is a general term that refers to any API that is publicly available and has an open standard for its usage. This can refer to any API, regardless of the specific technology or specification used to build it. The term “Open API” is often used interchangeably with “public API” or “web API.”

While OpenAPI is a specific specification for building and documenting RESTful APIs, Open API is a more general term that refers to any public-facing API that has an open standard for its usage. It is important to note that not all Open APIs are built using the OpenAPI specification.

Differences between OpenAPI and Open API

The main difference between OpenAPI and Open API is that OpenAPI is a specific specification for building and documenting RESTful APIs, while Open API is a more general term that refers to any public-facing API that has an open standard for its usage. OpenAPI is a standard that is used to describe the details of a specific API, while Open API is a more general concept that can refer to any publicly available API.

Another difference is that OpenAPI is a standard that is maintained by a consortium of industry leaders, while Open API is not tied to any specific organization or group. OpenAPI has a large community of contributors and users, while Open API does not have a centralized community or governance structure.

Conclusion

In summary, OpenAPI and Open API are two terms that are often used interchangeably, but they refer to different things. OpenAPI is a specific specification for building and documenting RESTful APIs, while Open API is a more general term that refers to any public-facing API that has an open standard for its usage. While they share some similarities, it’s important to understand the differences between these two terms and the specific technologies and specifications that they refer to.