No User facing API no, What do you need them for?
If you're just looking to connect to the Management API you can inject @ArquillianResource ManagementClient.
ManagementClient has a method getControllerClient that return a connected ModelControllerClient.
Much thanks Aslak. An instance of ManagementClient is sufficient. I need it to setup my arquillian-enabled integration-test and configure my ejb client against the server, no matter if the current arq-test is running locally (development) or in the CI server using an other maven-profile, thus pointing to an other server.