[keycloak-user] Help with non-browser authentization flow

Hello, I'm building a REST based API for users to access things on our server. The Keycloak browser based authentication workflow is great, and I'd like to offer something similar to someone writing a REST client. i.e.: 1) POST your username and password to the Keycloak server 2) Receive a authorization_code back from Keycloak 3) Call OUR REST endpoint with the Keycloak authorization_code 4) Our software does a "back channel" call to Keycloak server to exchange the authorization_code for access token. 5) We then reply to the user with the JIT as a unique token for access our REST API This is super easy using the browser to visit the Keycloak login page (the standard workflow covers steps 1-3 above).  How can I configure Keycloak to allow the same flow without a browser? Thank You! -- Noah