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The world's most widely used API description standard

What is OpenAPI?

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

This allows people to understand how an API works, 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.


April 17, 2024 - April 18, 2024

apidays Singapore 2024

The Arts House at The Old Parliament 1 Old Parliament Ln, Singapore

apidays Singapore 2024 brings together local, regional and international experts to share how APIs and related technologies are transforming business to accelerate economic growth.


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