How to access an OIDC secured api

[alok]

I have two apps. app1 has an api say /salarydetail?userid=abc123 and I want to access this api from app2. App1 is oidc secured. now how to access this api? I want to do Http call like by using RestTemplate in Spring Boot app.

[nebulon]

This very much depends on the app which api you want to access. Often apps use accessTokens for this instead of login sessions. OpenID Connect is a subset mostly doing the authentication, but not the authorization here, so for REST API usage, I would prefer tokens.