MicroProfile Open API

MicroProfile OpenAPI provides a way for developers to automatically generate and serve OpenAPI-compliant documentation for RESTful APIs in their applications. It allows applications to expose structured API documentation, which can be accessed via a defined endpoint, making it easier for developers and external systems to understand and interact with the API .

Open API 4.1

Date Released: April 16, 2025

MicroProfile OpenAPI provides a way for developers to automatically generate and serve OpenAPI-compliant documentation for RESTful APIs in their applications.

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Spec version
Released Date
OpenAPI 4.1
April 16, 2025
OpenAPI 4.0.2
Oct 23, 2024
OpenAPI 3.1.2
September 19, 2024
Open API 3.0
November 30, 2021
Open API 2.0.1
January 31, 2022
Open API 1.2
August 18, 2021
Open API 1.1.3
March 9, 2021
Open API 1.0.1
February 13, 2018

Latest Open API Blog Post

October 27, 2025

MicroProfile 7.1 in Open Liberty 25.0.0.8

March 1, 2024

MicroProfile 6.1 support and MicroProfile OpenAPI updates in Open Liberty 23.0.0.12

October 16, 2023

MicroProfile 6.1 Preview in Open Liberty 23.0.0.10-beta

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