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GeezerVison is showing www.openapis.org — OpenAPI Initiative – The OpenAPI Initiative provides an open source, technical community, within which industry participants may easily contribute to building a vendor-neutral, portable and an open specification for providing technical metadata for REST APIs – the “OpenAPI Specification” (OAS).

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The world's most widely used API description standard

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What is OpenAPI?

The OpenAPI Specifications provide 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 languages:

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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.

What is OpenAPI?

Events

February 18 - 20, 2026

DEVELOPERWEEK 2026
OpenAPI Summit

San Jose Convention Center

The OAI Summit is an integral part of DeveloperWeek

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