[keycloak-user] Securing dynamic services

i've installed keycloak to secure a software as a service application that allow users to create scripts they can run as services, for the authentication part keycloak works like a charm, users are required to enter a login and I get their roles and everything. The idea is to let users create services and roles, and assign them to users, this all works The issue i'm having is authorization, since i have no knowledge before and of what services or roles would be created i can't use Security Constrains on web.xml or annotations. Since I have the roles I could write a function that does auhorizations, but would love for keycloak to do it for me, I'm already passing realms to keycloak as the multi-tenant example, is there any way I could assign urls to roles I create so keycloak checks where or not I can access that url? thanks in advance