diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index a44778f..85005bc 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -1,8 +1,11 @@
-module ApplicationController
-  extend ActionController::API
+class ApplicationController < ActionController::API
+  include Renderable
+
   before_action :authenticate!
 
-  rescue_from Unauthorized, with: -> { render json: { error: "Unauthorized" }, status: :unauthorized }
+  rescue_from Unauthorized do
+    render_error("Unauthorized", :unauthorized)
+  end
 
   private
   def authenticate!
diff --git a/app/controllers/concerns/renderable.rb b/app/controllers/concerns/renderable.rb
index 86e8f4e..2e984c4 100644
--- a/app/controllers/concerns/renderable.rb
+++ b/app/controllers/concerns/renderable.rb
@@ -1,17 +1,19 @@
 # frozen_string_literal: true
 
-class Renderable
+module Renderable
   extend ActiveSupport::Concern
 
   def render_success(data = nil, status = :ok, meta = {})
     body = { success: true }
     body[:data] = data if data
     body[:meta] = meta if meta.present?
-    render json: body
+    render json: body, status:
   end
 
-  def render_error
-
+  def render_error(message, status = :unprocessable_entity, details: nil)
+    body = { success: false, error: { message: } }
+    body[:error][:details] = details if details.present?
+    render json: body, status:
   end
 
 end