Hello,
I'm very proud to announce the release of Keycloak-hs, a library to access Keycloak:
http://hackage.haskell.org/package/keycloak-hs. Keycloak (www.keycloak.org) is a tool allowing to authenticate users and protect your API resources.

I included a tutorial in the README file. Keycloak as many many features, so this library will evolve to cover more. Help/PRs are welcome!

Cheers!
Corentin