diff --git a/lib/xikolo/client.rb b/lib/xikolo/client.rb
deleted file mode 100644
index 4e6f22b2..00000000
--- a/lib/xikolo/client.rb
+++ /dev/null
@@ -1,59 +0,0 @@
-class Xikolo::Client
-  def self.get_user(user_id)
-    params = {:user_id => user_id}
-    response = get_request(user_profile_url(user_id), params)
-    if response
-      return JSON.parse(response)
-    else
-      return nil
-    end
-  end
-
-  def self.user_profile_url(user_id)
-    return url + 'v2/users/' + user_id
-  end
-
-  def self.post_request(url, params)
-    begin
-      return RestClient.post url, params, http_header
-    rescue
-      return nil
-    end
-  end
-
-  def self.get_request(url, params)
-    begin
-      return RestClient.get url, {:params => params}.merge(http_header)
-    rescue
-      return nil
-    end
-  end
-
-  def self.http_header
-    return {:accept => accept, :authorization => token}
-  end
-
-  def self.url
-    @url ||= CodeOcean::Config.new(:code_ocean).read.fetch(:xikolo_api_url, 'http://localhost:3000/api/') #caches this with ||=, second value of fetch is default value
-  end
-
-  def self.accept
-    'application/vnd.xikolo.v1, application/vnd.api+json, application/json'
-  end
-
-  def self.token
-    'Token token='+Rails.application.secrets.openhpi_api_token#+'"'
-  end
-
-  private
-
-  def authenticate_with_user
-    params = {:email => "admin@openhpi.de", :password => "admin"}
-    response = post_request(authentication_url, params)
-    @token = 'Token token="'+JSON.parse(response)['token']+'"'
-  end
-
-  def self.authentication_url
-    return @url + 'authenticate'
-  end
-end
\ No newline at end of file
diff --git a/lib/xikolo/user_client.rb b/lib/xikolo/user_client.rb
deleted file mode 100644
index c681c999..00000000
--- a/lib/xikolo/user_client.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-class Xikolo::UserClient
-  def self.get(user_id)
-    user = Xikolo::Client.get_user(user_id)
-
-    # return default values if user is not found or if there is a server issue:
-    if user
-      name = user.dig('data', 'attributes', 'name') || "User "  + user_id
-      user_visual = user.dig('data', 'attributes', 'avatar_url') || ActionController::Base.helpers.image_path('default.png')
-      language = user.dig('data', 'attributes', 'language') || "DE"
-      return {display_name: name, user_visual: user_visual, language: language}
-    else
-      return {display_name: "User " + user_id, user_visual: ActionController::Base.helpers.image_path('default.png'), language: "DE"}
-    end
-  end
-end
\ No newline at end of file