Library that provides the @API annotation that is used to annotate public types, methods, constructors, and fields within a framework or application in order to publish their status and level of stability and to indicate how they are intended to be used by consumers of the API.

The @API Guardian library is deployed to maven central. You can simply add it as a dependency:

<dependency>
    <groupId>org.apiguardian</groupId>
    <artifactId>apiguardian-api</artifactId>
    <version>1.1.0</version>
</dependency>

compile 'org.apiguardian:apiguardian-api:1.1.0'