Are you talking about org.jboss.deployers.spi.deployment.MainDeployer? This appears to be a JBoss 5 API. I'm on 4.0.5 (upgrading the version is not in my hands...) But really, if JBoss says they support JSR88, then it should be a proper implementation. The impression I get from the code is that it is except I can't get it to work thanks to complete lack of documentation or samples. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4112443#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...