you can try keycloak-config-cli https://github.com/adorsys/keycloak-config-cli we've been using it in production for 2 years and it works well! we are running it as part of our CICD, to sync settings to all Keycloak realms. As the tool supports variable substitution, it makes it quite flexible. The config file it uses is basically the same realm.json you can export from Keycloak, so it doesn't re-invent the wheel.