Hi all, I worked on OAuth integration in Seam Security. Markek provided some code in Seam Social but I found it more relevant to put it in Security. So I moved and refactored the Authenticator in Seam Security External. Everything seems ok but I can't start the Web example application having this exception. org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [SamlSignatureUtilForPostBinding] with qualifiers [@Default] at injection point [[field] @Inject private org.jboss.seam.security.external.saml.SamlMessageSender.signatureUtilForPostBinding] I tested my security classes directly in the web app : it works. So I can't put them in external since I need to configure unrelated beans to avoid Weld error at boot time. I pushed the code for others to test. Start with example/oauth web app. The version works. If you delete org.jboss.seam.security.external.oauth and org.jboss.seam.security.external.oauth.api package from the web app and add security-external (which contains the same classes) as a dependence you'll have the exception. regards, Antoine SABOT-DURAND