def get_auth_server_info(environ):
    """
    Return some info about the available auth servers.
    """
    auth_server_info = []
    auth_servers = environ['tiddlyweb.config'].get('oauth.servers')
    for server in auth_servers:
        server_info = auth_servers[server]
        auth_server_info.append({
                'name': server,
                'pretty_name': server_info.get('pretty_name', server),
                'icon': server_info.get('icon', '')
        })
    return auth_server_info