Acces an API behind Access protected by OpenIDConnect or SAML


I have protected a web server with Cloudflare Access and an OpenIDConnect authentication.

When I try to access to that web server with a browser, no problem. Everything works well.

However, this web server also have an API that I want to access with an android app (or Postman) using the authentication provided by OpenIDConnect.

How can I do that ? Cloudflare Access seems to work with cookie only that suits not very well with calling an Rest API endpoint. Is there a way to give to Access a token provided by the Identity provider ? Or maybe is there an other product of cloudflare that manage that kind of thing ?

Thank you very much,