Can Keycloak REST API resolve policies?

Getting advice
1

Can Keycloak be called on REST API to resolve requests below?

  • Can user X do action Y on resource Z?
  • What actions can user X do on resource Z?
  • What users can do action Y on resource Z?

All of this without user X being authenticated.
In my use case, authn is done by different product. I need to get the Authz part done, in ABAC sense.

Thank you in advance!