If you wish to use Codex as a dependency in your projects, Codex is available through Maven Central or snapshots through Sonatype.
<repository>
<id>sonatype</id>
<url>https://central.sonatype.com/repository/maven-snapshots/</url>
</repository>
...
<dependency>
<groupId>studio.magemonkey</groupId>
<artifactId>codex</artifactId>
<version>1.1.1-R0.4-SNAPSHOT</version>
</dependency>