Discourse, Keycloak, SAML vs OAuth

[david (David Taylor)]

I would suggest starting with

Discourse OpenID Connect (OIDC)

Summary Discourse OpenID Connect allows an OpenID Connect provider to be used as an authentication provider for Discourse. Install Guide This plugin is bundled with Discourse core. There is no need to install the plugin separately. Features The plugin aims to provide a minimal implementation of the specification. Specifically, it supports the “Authorization Code Flow”. To get started, follow the plugin installation instructions, or contact your hosti…

And finding the openid discovery document URL using these instructions