The sgs-client-api package produces a jar artifact which includes only the core classes required at compile time to develop a darkstar client application
'com.projectdarkstar.client:sgs-client-api:0.9.6.2'
<dependency>
<groupId>com.projectdarkstar.client</groupId>
<artifactId>sgs-client-api</artifactId>
<version>0.9.6.2</version>
</dependency>
<dependency org="com.projectdarkstar.client" name="sgs-client-api" rev="0.9.6.2"/>
"com.projectdarkstar.client", "sgs-client-api", "0.9.6.2"