There is no KeycloakLoginModule used, if one exists I am not sure what it does (yet). Also, so far we have only used Keycloak for OAuth2, SAML purposes only, not general authentication framework, that role is still done by jboss pickletlink.

no, I am saying a new Subject is created here, not passed from another layer, and access token is added as a private credential

Deprecate the PassthroughIdentityLoginModule -------------------------------------------- Key: TEIID-4561 URL: https://issues.jboss.org/browse/TEIID-4561 Project: Teiid Issue Type: Quality Risk Components: Server Reporter: Steven Hawkins Assignee: Steven Hawkins Fix For: 9.2 The delegation capability of the PassthroughIdentityLoginModule can be associated with the underlying OAuth10/20 login modules (similar to the delegationCredential behavior of the KerberosLoginModule). Also the OAuthCredentialContext should be changed to use the Subject private credentials rather than a ThreadLocal.