Keycloak custom authenticator Rest call

I would like make a Rest Get inside a custom authenticator.
I can add RestTemplate dependency. but i would like ask if there’s a native module in keycloak to make the Rest call.

I’ve never used it from a custom authenticator or other extension, but it looks like the JBoss RESTEasy
( client is included in Keycloak.

I’m not quite sure what you ment by ‘custon authenticator’ but I can guess you ment for a custom rest API extension to keycloak.

You could look at this repo, I have implemented an extension that requires specific permission, this is still in progress but it works so check it out.