In today’s world of distributed systems and microservices, security has become more critical than ever. One common approach to securing these systems is through the use of OpenID Connect (OIDC), an identity layer built on top of the OAuth 2.0 protocol. However, integrating OIDC into command-line interface (CLI) applications can be challenging due to the complexity of OIDC flows.

In this short article there is a use-case of using oauth2c to obtain token via CLI. Keycloak is used as primary refernce of IDP, but any other OIDC complient solutions should work in the same way.