diff --git a/twenty-backend/lib/twenty-backend/servlet.rb b/twenty-backend/lib/twenty-backend/servlet.rb
index 45bfb38..2e31a84 100644
--- a/twenty-backend/lib/twenty-backend/servlet.rb
+++ b/twenty-backend/lib/twenty-backend/servlet.rb
@@ -2,24 +2,10 @@ class Twenty::Servlet < WEBrick::HTTPServlet::AbstractServlet
   require_relative "servlet/response"
   require_relative "servlet/projects"
   require_relative "servlet/tasks"
+
+  # mixins
   require_relative "servlet/mixin/server_mixin"
+  require_relative "servlet/mixin/response_mixin"
   extend ServerMixin
-
-  def ok(res, body = {})
-    Response.new(res)
-      .set_status(200)
-      .set_body(body)
-  end
-
-  def not_found(res)
-    Response.new(res)
-      .set_status(404)
-      .set_body({errors: ["The requested path was not found"]})
-  end
-
-  def bad_request(res, body = {})
-    Response.new(res)
-      .set_status(400)
-      .set_body({errors: ["Bad request"]}.merge(body))
-  end
+  include ResponseMixin
 end
diff --git a/twenty-backend/lib/twenty-backend/servlet/mixin/response_mixin.rb b/twenty-backend/lib/twenty-backend/servlet/mixin/response_mixin.rb
new file mode 100644
index 0000000..625dafd
--- /dev/null
+++ b/twenty-backend/lib/twenty-backend/servlet/mixin/response_mixin.rb
@@ -0,0 +1,38 @@
+module Twenty::Servlet::ResponseMixin
+  ##
+  # Sets a 200 OK response.
+  # @param [WEBrick::HTTPResponse] res
+  #  An instance of {WEBrick::HTTPResponse WEBrick::HTTPResponse}
+  # @param [#to_json] body
+  #  The response body.
+  # @return [void]
+  def ok(res, body = {})
+    Response.new(res)
+      .set_status(200)
+      .set_body(body)
+  end
+
+  ##
+  # Sets a 400 Bad Request response.
+  # @param [WEBrick::HTTPResponse] res
+  #  An instance of {WEBrick::HTTPResponse WEBrick::HTTPResponse}
+  # @param [#to_json] body
+  #  The response body.
+  # @return [void]
+  def bad_request(res, body = {})
+    Response.new(res)
+      .set_status(400)
+      .set_body({errors: ["Bad request"]}.merge(body))
+  end
+
+  ##
+  # Set a 404 Not Found response.
+  # @param [WEBrick::HTTPResponse] res
+  #  An instance of {WEBrick::HTTPResponse WEBrick::HTTPResponse}
+  # @return [void]
+  def not_found(res)
+    Response.new(res)
+      .set_status(404)
+      .set_body({errors: ["The requested path was not found"]})
+  end
+end