[keycloak-user] Notifying clients after session creation in Keycloak

Hi, I'm working on custom SSO, which uses Direct Grant API to store sessions in Keycloak. The SSO creates own cookie and data related to it and then creates session in Keycloak calling /protocol/openid-connect/token, hiding returned tokens behind the cookie. I'm aware that solution isn't the best one, but that's not the case now. ​What I need now is ​to provide OpenID Connect Authorization Code Flow to external clients of my custom SSO. The easiest solution would be if they called Keycloak directly, but then the session in custom SSO is not created and the Keycloak session in not related to the user data stored in custom SSO. The question is if there is any way to notify clients (custom SSO) after successful session creation in Keycloak? It would need to call the custom SSO with the contents of /protocol/openid-connect/token response, allowing the custom SSO to store tokens behind the cookie. What if I implemented such a feature and merged it to Keycloak? -- Pozdrawiam, Daniel Radzikowski.