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The world's most widely used API description standard

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What is OpenAPI?

The OpenAPI Specifications provides a formal standard for describing HTTP APIs.

This allows people to understand how an API works, how a sequence of APIs work together, generate client code, create tests, apply design standards, and much, much more.

OpenAPI Simple API Lifecycle

3 Benefits of OpenAPI

As the most widely used API description language:


Commonality of use and support by tool vendors, meaning flexibility in tool vendor selection.

Commonality of knowledge by developers and engineers, meaning flexibility in staffing.

Abstraction of API description facilitating adoption of innovations in API behaviors 
while avoiding total rewrites.


May 28, 2024 - May 29, 2024

apidays Helsinki & North 2024

Pikku-Finlandia, Helsinki

apidays Helsinki 2024 Connecting Physical and Digital: Sustainable APIs for the Era of AI, Super and Quantum Computing.


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