I’m pleased to announce that certification for RP logout implementations is now available. Give it a spin at https://openid.net/certification/logout_rp_testing/! This joins that OP logout certification that launched in August 2019, which is described at https://openid.net/certification/logout_op_testing/. Both are in pilot mode, and so certifications are currently available at no cost to OpenID Foundation members.
If you’ve implemented any form of logout (RP-Initiated, Session Management, Front-Channel, or Back-Channel), please run these tests and report your results. Getting test coverage of logout implementations is important for the OpenID Connect working group to have confidence that these specs are ready to take to Final status.