There's JBossWSContainer inner class in RuntimeModelDeploymentAspect in Metro stack integration layer. Its content is like this. You should provide particular if statement to include your SPI extensions. (after you'll make it work, you can post patch to JBossWS and we'll include it to our integration layer.) However this approach won't work for transport layer. Do you have just server transport implementation or client transport implementation or both? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4259997#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...