KeyCloak 26.1 - Quarkus: How Can I Acquire an Access Token via Client Credentials Grant?

Question

I am using Keycloak 26.1 alongside Quarkus and invoking several Keycloak endpoints via a REST client. Each of these endpoints requires an access token with specific privileges. At the moment, I retrieve this access token from the logged-in user’s session. However, I would like the access token to be obtained directly from the Keycloak client, ensuring that it is independent of the user and that users do not possess those particular privileges.

I understand that I need to implement a client credentials grant on the Keycloak client, but I am unsure how to proceed with this in my current setup.

For reference, the Quarkus dependencies I am using are:

• quarkus-keycloak-authorization
• quarkus-oidc-client
• quarkus-oidc

Could someone kindly provide guidance or an example on how to achieve this?

After numerous attempts, I have not managed to successfully obtain an access token using client credentials.