Following an interesting discussion on programming.dev after the last article, I thought it would be good to add some extra notes regarding Webfinger. Webfinger provides a standard API for discovering the user profile details and avatar from the username, no matter the software running on the node. The standard Webfinger endpoint is /.well-known/webfinger. It must always be queried with at least the resource. Some examples using my account on Lemmy (programming.