diff --git a/Gemfile b/Gemfile
index 25e1c15368..adbd35bc47 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,7 +13,6 @@ gem 'jbuilder', '~> 2.7.0'
 gem 'figaro', '~> 1.1.1'
 gem 'hashie', '~> 3.5.7'
 gem 'aasm', '~> 5.0.0'
-gem 'active_model-errors_details', '~> 1.3.1'
 gem 'bunny', '~> 2.11.0'
 gem 'cancancan', '~> 2.2.0'
 gem 'enumerize', '~> 2.2.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 883ea27d9d..01c694374b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,9 +22,6 @@ GEM
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    active_model-errors_details (1.3.1)
-      activemodel (>= 3.2.13, < 5.0.0)
-      activesupport
     activejob (4.2.11)
       activesupport (= 4.2.11)
       globalid (>= 0.3.0)
@@ -398,7 +395,6 @@ PLATFORMS
 
 DEPENDENCIES
   aasm (~> 5.0.0)
-  active_model-errors_details (~> 1.3.1)
   angularjs-rails (~> 1.3.15)
   annotate (~> 2.7)
   api-pagination (~> 4.8.2)
diff --git a/app/api/v2/account/deposits.rb b/app/api/v2/account/deposits.rb
index aa0b277341..63ddfbdb17 100644
--- a/app/api/v2/account/deposits.rb
+++ b/app/api/v2/account/deposits.rb
@@ -18,7 +18,7 @@ class Deposits < Grape::API
           optional :currency,
                    type: String,
                    values: { value: -> { Currency.enabled.codes(bothcase: true) }, message: 'account.currency.doesnt_exist' },
-                   desc: -> { "Currency value contains #{Currency.enabled.codes(bothcase: true).join(',')}" }
+                   desc: 'Currency code'
           optional :state,
                    type: String,
                    values: { value: -> { Deposit::STATES.map(&:to_s) }, message: 'account.deposit.invalid_state' }
@@ -52,9 +52,7 @@ class Deposits < Grape::API
                    desc: "Deposit transaction id"
         end
         get "/deposits/:txid" do
-          deposit = current_user.deposits.find_by(txid: params[:txid])
-          raise DepositByTxidNotFoundError, params[:txid] unless deposit
-
+          deposit = current_user.deposits.find_by!(txid: params[:txid])
           present deposit, with: API::V2::Entities::Deposit
         end
 
diff --git a/app/api/v2/account/mount.rb b/app/api/v2/account/mount.rb
index 93c9c97e28..3b60a04959 100644
--- a/app/api/v2/account/mount.rb
+++ b/app/api/v2/account/mount.rb
@@ -1,7 +1,6 @@
 module API::V2
   module Account
     class Mount < Grape::API
-      include NewExceptionsHandlers
 
       before { authenticate! }
 
diff --git a/app/api/v2/account/withdraws.rb b/app/api/v2/account/withdraws.rb
index 13085a246b..eae682285b 100644
--- a/app/api/v2/account/withdraws.rb
+++ b/app/api/v2/account/withdraws.rb
@@ -15,7 +15,7 @@ class Withdraws < Grape::API
           optional :currency,
                    type: String,
                    values: { value: -> { Currency.coins.enabled.codes(bothcase: true) }, message: 'account.currency.doesnt_exist'},
-                   desc: -> { "Any supported currencies: #{Currency.enabled.codes(bothcase: true).join(',')}." }
+                   desc: 'Currency code.'
           optional :limit,
                    type: { value: Integer, message: 'account.withdraw.non_integer_limit' },
                    values: { value: 1..100, message: 'account.withdraw.invalid_limit' },
@@ -73,7 +73,7 @@ class Withdraws < Grape::API
 
         rescue ::Account::AccountError => e
           report_exception_to_screen(e)
-          error!({ errors: ['account.withdraw.not_enough_funds'] }, 422)
+          error!({ errors: ['account.withdraw.insufficient_balance'] }, 422)
         rescue ActiveRecord::RecordInvalid => e
           report_exception_to_screen(e)
           error!({ errors: ['account.withdraw.invalid_amount'] }, 422)
diff --git a/app/api/v2/errors.rb b/app/api/v2/errors.rb
deleted file mode 100644
index 7900897941..0000000000
--- a/app/api/v2/errors.rb
+++ /dev/null
@@ -1,79 +0,0 @@
-# encoding: UTF-8
-# frozen_string_literal: true
-
-module API
-  module V2
-
-    module ExceptionHandlers
-
-      def self.included(base)
-        base.instance_eval do
-          rescue_from Grape::Exceptions::ValidationErrors do |e|
-            error!({ error: { code: 1001, message: e.message } }, 422)
-          end
-
-          rescue_from Peatio::Auth::Error do |e|
-            report_exception(e)
-            error!({ error: { code: e.code, message: 'Authorization failed' } }, 401)
-          end
-
-          rescue_from ActiveRecord::RecordNotFound do |e|
-            error!('Couldn\'t find record.', 404)
-          end
-        end
-      end
-    end
-
-    class Error < Grape::Exceptions::Base
-      attr :code, :text
-
-      # code: api error code defined by Peatio, errors originated from
-      # subclasses of Error have code start from 2000.
-      # text: human readable error message
-      # status: http status code
-      def initialize(opts={})
-        @code    = opts[:code]   || 2000
-        @text    = opts[:text]   || ''
-
-        @status  = opts[:status] || 400
-        @message = {error: {code: @code, message: @text}}
-      end
-
-      def inspect
-        message  = @text
-        message += " (#{@reason})" if @reason.present?
-        %[#<#{self.class.name}: #{message}>]
-      end
-    end
-
-    # class CreateOrderError < Error
-    #   def initialize(e)
-    #     super code: 2002, text: 'Failed to create order.', status: 422
-    #   end
-    # end
-
-    # class CancelOrderError < Error
-    #   def initialize(e)
-    #     super code: 2003, text: 'Failed to cancel order.', status: 422
-    #   end
-    # end
-
-    # class OrderNotFoundError < Error
-    #   def initialize(id)
-    #     super code: 2004, text: "Order##{id} doesn't exist.", status: 404
-    #   end
-    # end
-
-    # class CreateOrderAccountError < Error
-    #   def initialize(e)
-    #     super code: 2005, text: 'Not enough funds to create order.', status: 422
-    #   end
-    # end
-
-    class DepositByTxidNotFoundError < Error
-      def initialize(txid)
-        super code: 2012, text: "Deposit##txid=#{txid} doesn't exist.", status: 404
-      end
-    end
-  end
-end
diff --git a/app/api/v2/exception_handlers.rb b/app/api/v2/exception_handlers.rb
new file mode 100644
index 0000000000..5a920a8eb1
--- /dev/null
+++ b/app/api/v2/exception_handlers.rb
@@ -0,0 +1,31 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+module API::V2
+  module ExceptionHandlers
+    def self.included(base)
+      base.instance_eval do
+        rescue_from Grape::Exceptions::ValidationErrors do |e|
+          errors_array = e.full_messages.map do |err|
+            err.split.last
+          end
+          error!({ errors: errors_array }, 422)
+        end
+
+        rescue_from Peatio::Auth::Error do |e|
+          report_exception(e)
+          error!({ errors: ['jwt.decode_and_verify'] }, 401)
+        end
+
+        rescue_from ActiveRecord::RecordNotFound do |_e|
+          error!({ errors: ['record.not_found'] }, 404)
+        end
+
+        rescue_from :all do |e|
+          report_exception(e)
+          error!({ errors: ['server.internal_error'] }, 500)
+        end
+      end
+    end
+  end
+end
diff --git a/app/api/v2/helpers.rb b/app/api/v2/helpers.rb
index d2b92c3cdf..e42603c074 100644
--- a/app/api/v2/helpers.rb
+++ b/app/api/v2/helpers.rb
@@ -71,7 +71,7 @@ def create_order(attrs)
       # TODO: Rewrite this rescue.
       rescue ::Account::AccountError => e
         report_exception_to_screen(e)
-        error!({ errors: ['market.account.not_enough_funds']}, 422)
+        error!({ errors: ['market.account.insufficient_balance']}, 422)
       rescue ::Order::InsufficientMarketLiquidity => e
         report_exception_to_screen(e)
         error!({ errors: ['market.order.insufficient_market_liquidity'] }, 422)
diff --git a/app/api/v2/market/mount.rb b/app/api/v2/market/mount.rb
index 25f45ea520..3663931ac1 100644
--- a/app/api/v2/market/mount.rb
+++ b/app/api/v2/market/mount.rb
@@ -3,7 +3,6 @@
 module API::V2
   module Market
     class Mount < Grape::API
-      include NewExceptionsHandlers
 
       before { authenticate! }
       before { trading_must_be_permitted! }
diff --git a/app/api/v2/market/named_params.rb b/app/api/v2/market/named_params.rb
new file mode 100644
index 0000000000..8130c0823f
--- /dev/null
+++ b/app/api/v2/market/named_params.rb
@@ -0,0 +1,78 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+module API
+  module V2
+    module Market
+      module NamedParams
+        extend ::Grape::API::Helpers
+
+        params :currency do
+          requires :currency,
+                  type: String,
+                  values: { value: -> { Currency.enabled.pluck(:id) }, message: 'account.currency.doesnt_exist' },
+                  desc: 'The currency code.'
+        end
+
+        params :market do
+          requires :market,
+                  type: String,
+                  values: { value: -> { ::Market.enabled.ids }, message: 'market.market.doesnt_exist' },
+                  desc: -> { V2::Entities::Market.documentation[:id] }
+        end
+
+        params :order do
+          requires :side,
+                  type: String,
+                  values: { value: %w(sell buy), message: 'market.order.invalid_side' },
+                  desc: -> { V2::Entities::Order.documentation[:side] }
+          requires :volume,
+                  type: { value: BigDecimal, message: 'market.order.non_decimal_volume' },
+                  values: { value: -> (v){ v.try(:positive?) }, message: 'market.order.non_positive_volume' },
+                  desc: -> { V2::Entities::Order.documentation[:volume] }
+          optional :ord_type,
+                  type: String,
+                  values: { value: -> { Order::TYPES}, message:  'market.order.invalid_type' },
+                  default: 'limit',
+                  desc: -> { V2::Entities::Order.documentation[:type] }
+          given ord_type: ->(val) { val == 'limit' } do
+            requires :price,
+                    type: { value: BigDecimal, message: 'market.order.non_decimal_price' },
+                    values: { value: -> (p){ p.try(:positive?) }, message: 'market.order.non_positive_price' },
+                    desc: -> { V2::Entities::Order.documentation[:price] }
+          end
+        end
+
+        params :order_id do
+          requires :id,
+                  type: { value: Integer, message: 'market.order.non_integer_id' },
+                  allow_blank: { value: false, message: 'market.order.empty_id' },
+                  desc: -> { V2::Entities::Order.documentation[:id] }
+        end
+
+        params :trade_filters do
+          optional :limit,
+                  type: { value: Integer, message: 'market.trade.non_integer_limit' },
+                  values: { value: 1..1000, message: 'market.trade.invalid_limit' },
+                  default: 100,
+                  desc: 'Limit the number of returned trades. Default to 100.'
+          optional :page,
+                  type: { value: Integer, message: 'market.trade.non_integer_page' },
+                  allow_blank: { value: false, message: 'market.trade.empty_page' },
+                  default: 1,
+                  desc: 'Specify the page of paginated results.'
+          optional :timestamp,
+                  type: { value: Integer, message: 'market.trade.non_integer_timestamp' },
+                  allow_blank: { value: false, message: 'market.trade.empty_timestamp' },
+                  desc: "An integer represents the seconds elapsed since Unix epoch."\
+                        "If set, only trades executed before the time will be returned."
+          optional :order_by,
+                  type: String,
+                  values: { value: %w(asc desc), message: 'market.trade.invalid_order_by' },
+                  default: 'desc',
+                  desc: "If set, returned trades will be sorted in specific order, default to 'desc'."
+        end
+      end
+    end
+  end
+end
diff --git a/app/api/v2/market/orders.rb b/app/api/v2/market/orders.rb
index 0e4a37bc9b..e293a6cf58 100644
--- a/app/api/v2/market/orders.rb
+++ b/app/api/v2/market/orders.rb
@@ -5,7 +5,7 @@ module API
   module V2
     module Market
       class Orders < Grape::API
-        helpers ::API::V2::NamedParams
+        helpers ::API::V2::Market::NamedParams
 
         desc 'Get your orders, results is paginated.',
           is_array: true,
@@ -17,7 +17,7 @@ class Orders < Grape::API
                    desc: -> { V2::Entities::Market.documentation[:id] }
           optional :state,
                    type: String,
-                   values: { value: -> { Order.state.values } , message: 'market.order.invalid_state' },
+                   values: { value: -> { Order.state.values }, message: 'market.order.invalid_state' },
                    desc: 'Filter order by state.'
           optional :limit,
                    type: { value: Integer, message: 'market.order.non_integer_limit' },
diff --git a/app/api/v2/market/trades.rb b/app/api/v2/market/trades.rb
index 80354857b8..3503300b53 100644
--- a/app/api/v2/market/trades.rb
+++ b/app/api/v2/market/trades.rb
@@ -5,7 +5,7 @@ module API
   module V2
     module Market
       class Trades < Grape::API
-        helpers API::V2::NamedParams
+        helpers API::V2::Market::NamedParams
 
         desc 'Get your executed trades. Trades are sorted in reverse creation order.',
           is_array: true,
diff --git a/app/api/v2/mount.rb b/app/api/v2/mount.rb
index 6890bd729c..fc0243d78c 100644
--- a/app/api/v2/mount.rb
+++ b/app/api/v2/mount.rb
@@ -1,7 +1,7 @@
 # encoding: UTF-8
 # frozen_string_literal: true
 
-require_dependency 'v2/errors'
+require_dependency 'v2/exception_handlers'
 require_dependency 'v2/validations'
 
 module API
diff --git a/app/api/v2/named_params.rb b/app/api/v2/named_params.rb
deleted file mode 100644
index 4f3ac3a938..0000000000
--- a/app/api/v2/named_params.rb
+++ /dev/null
@@ -1,76 +0,0 @@
-# encoding: UTF-8
-# frozen_string_literal: true
-
-module API
-  module V2
-    module NamedParams
-      extend ::Grape::API::Helpers
-
-      params :currency do
-        requires :currency,
-                type: String,
-                values: { value: -> { Currency.enabled.pluck(:id) }, message: 'account.currency.doesnt_exist' },
-                desc: 'The currency code.'
-      end
-
-      params :market do
-        requires :market,
-                 type: String,
-                 values: { value: -> { ::Market.enabled.ids }, message: 'market.market.doesnt_exist' },
-                 desc: -> { V2::Entities::Market.documentation[:id] }
-      end
-
-      params :order do
-        requires :side,
-                 type: String,
-                 values: { value: %w(sell buy), message: 'market.order.invalid_side' },
-                 desc: -> { V2::Entities::Order.documentation[:side] }
-        requires :volume,
-                 type: { value: BigDecimal, message: 'market.order.non_decimal_volume' },
-                 values: { value: -> (v){ v.try(:positive?) }, message: 'market.order.non_positive_volume' },
-                 desc: -> { V2::Entities::Order.documentation[:volume] }
-        optional :ord_type,
-                 type: String,
-                 values: { value: -> { Order::TYPES}, message:  'market.order.invalid_type' },
-                 default: 'limit',
-                 desc: -> { V2::Entities::Order.documentation[:type] }
-        given ord_type: ->(val) { val == 'limit' } do
-          requires :price,
-                   type: { value: BigDecimal, message: 'market.order.non_decimal_price' },
-                   values: { value: -> (p){ p.try(:positive?) }, message: 'market.order.non_positive_price' },
-                   desc: -> { V2::Entities::Order.documentation[:price] }
-        end
-      end
-
-      params :order_id do
-        requires :id,
-                 type: { value: Integer, message: 'market.order.non_integer_id' },
-                 allow_blank: { value: false, message: 'market.order.empty_id' },
-                 desc: -> { V2::Entities::Order.documentation[:id] }
-      end
-
-      params :trade_filters do
-        optional :limit,
-                 type: { value: Integer, message: 'market.trade.non_integer_limit' },
-                 values: { value: 1..1000, message: 'market.trade.invalid_limit' },
-                 default: 100,
-                 desc: 'Limit the number of returned trades. Default to 100.'
-        optional :page,
-                 type: { value: Integer, message: 'market.trade.non_integer_page' },
-                 allow_blank: { value: false, message: 'market.trade.empty_page' },
-                 default: 1,
-                 desc: 'Specify the page of paginated results.'
-        optional :timestamp,
-                 type: { value: Integer, message: 'market.trade.non_integer_timestamp' },
-                 allow_blank: { value: false, message: 'market.trade.empty_timestamp' },
-                 desc: "An integer represents the seconds elapsed since Unix epoch."\
-                       "If set, only trades executed before the time will be returned."
-        optional :order_by,
-                 type: String,
-                 values: { value: %w(asc desc), message: 'market.trade.invalid_order_by' },
-                 default: 'desc',
-                 desc: "If set, returned trades will be sorted in specific order, default to 'desc'."
-      end
-    end
-  end
-end
diff --git a/app/api/v2/new_exceptions_handlers.rb b/app/api/v2/new_exceptions_handlers.rb
deleted file mode 100644
index c323076760..0000000000
--- a/app/api/v2/new_exceptions_handlers.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-module API
-  module V2
-    module NewExceptionsHandlers
-      def self.included(base)
-        base.instance_eval do
-          rescue_from Grape::Exceptions::ValidationErrors do |e|
-            errors_array = e.full_messages.map do |err|
-              err.split.last
-            end
-            error!({ errors: errors_array }, 422)
-          end
-
-          rescue_from Peatio::Auth::Error do |e|
-            report_exception(e)
-            error!({ errors: ['jwt.decode_and_verify'] }, 401)
-          end
-
-          rescue_from ActiveRecord::RecordNotFound do |_e|
-            error!({ errors: ['record.not_found'] }, 404)
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/app/api/v2/public/currencies.rb b/app/api/v2/public/currencies.rb
index 0b6ce577ac..4c380c85f7 100644
--- a/app/api/v2/public/currencies.rb
+++ b/app/api/v2/public/currencies.rb
@@ -10,7 +10,7 @@ class Currencies < Grape::API
           success Entities::Currency
         end
         params do
-          requires :id, 
+          requires :id,
                    type: String,
                    values: { value: -> { Currency.enabled.codes(bothcase: true) }, message: 'public.currency.doesnt_exist'},
                    desc: -> { API::V2::Entities::Currency.documentation[:id][:desc] }
diff --git a/app/api/v2/public/mount.rb b/app/api/v2/public/mount.rb
index 02522408f5..f03fc0c38f 100644
--- a/app/api/v2/public/mount.rb
+++ b/app/api/v2/public/mount.rb
@@ -4,7 +4,6 @@ module API
   module V2
     module Public
       class Mount < Grape::API
-        include NewExceptionsHandlers
 
         mount Public::Fees
         mount Public::Currencies
diff --git a/spec/api/v2/account/deposits_spec.rb b/spec/api/v2/account/deposits_spec.rb
index 63d30eeb87..a0f77f0487 100644
--- a/spec/api/v2/account/deposits_spec.rb
+++ b/spec/api/v2/account/deposits_spec.rb
@@ -83,11 +83,13 @@
     it 'return 404 if txid not exist' do
       api_get '/api/v2/account/deposits/5', token: token
       expect(response.code).to eq '404'
+      expect(response).to include_api_error('record.not_found')
     end
 
     it 'returns 404 if txid not belongs_to you ' do
       api_get '/api/v2/account/deposits/10', token: token
       expect(response.code).to eq '404'
+      expect(response).to include_api_error('record.not_found')
     end
 
     it 'returns deposit txid if exist' do
diff --git a/spec/api/v2/account/withdraws_spec.rb b/spec/api/v2/account/withdraws_spec.rb
index b66a104c75..206b29d76b 100644
--- a/spec/api/v2/account/withdraws_spec.rb
+++ b/spec/api/v2/account/withdraws_spec.rb
@@ -175,7 +175,7 @@
         data[:amount] = 100
         api_post '/api/v2/account/withdraws', params: data, token: token
         expect(response).to have_http_status(422)
-        expect(response).to include_api_error('account.withdraw.not_enough_funds')
+        expect(response).to include_api_error('account.withdraw.insufficient_balance')
       end
 
       it 'validates type amount' do
diff --git a/spec/api/v2/auth/middleware_spec.rb b/spec/api/v2/auth/middleware_spec.rb
index 84588faabb..6c62cb615a 100644
--- a/spec/api/v2/auth/middleware_spec.rb
+++ b/spec/api/v2/auth/middleware_spec.rb
@@ -31,13 +31,13 @@ class Mount
     it 'should deny access when token is not given' do
       api_get '/api/v2/'
       expect(response.code).to eq '401'
-      expect(response.body).to eq '{"error":{"code":2001,"message":"Authorization failed"}}'
+      expect(response).to include_api_error('jwt.decode_and_verify')
     end
 
     it 'should deny access when invalid token is given' do
       api_get '/api/v2/', token: '123.456.789'
       expect(response.code).to eq '401'
-      expect(response.body).to eq '{"error":{"code":2001,"message":"Authorization failed"}}'
+      expect(response).to include_api_error('jwt.decode_and_verify')
     end
 
     it 'should allow access when valid token is given' do
@@ -51,7 +51,7 @@ class Mount
     it 'should deny access' do
       api_get '/api/v2/'
       expect(response.code).to eq '401'
-      expect(response.body).to eq '{"error":{"code":2001,"message":"Authorization failed"}}'
+      expect(response).to include_api_error('jwt.decode_and_verify')
     end
   end
 end
diff --git a/spec/api/v2/helpers_spec.rb b/spec/api/v2/helpers_spec.rb
index abe0348916..3e1632bd64 100644
--- a/spec/api/v2/helpers_spec.rb
+++ b/spec/api/v2/helpers_spec.rb
@@ -36,7 +36,7 @@ class Mount
         get '/api/v2/auth_test'
 
         expect(response.code).to eq '401'
-        expect(response.body).to eq '{"error":{"code":2001,"message":"Authorization failed"}}'
+        expect(response).to include_api_error('jwt.decode_and_verify')
       end
     end
   end
diff --git a/spec/api/v2/market/orders_spec.rb b/spec/api/v2/market/orders_spec.rb
index 303ee93281..4d449aaa0b 100644
--- a/spec/api/v2/market/orders_spec.rb
+++ b/spec/api/v2/market/orders_spec.rb
@@ -203,7 +203,7 @@
       old_count = OrderAsk.count
       api_post '/api/v2/market/orders', token: token, params: { market: 'btcusd', side: 'sell', volume: '12.13', price: '2014' }
       expect(response.code).to eq '422'
-      expect(response).to include_api_error('market.account.not_enough_funds')
+      expect(response).to include_api_error('market.account.insufficient_balance')
       expect(OrderAsk.count).to eq old_count
     end
 
@@ -239,7 +239,7 @@
         api_post '/api/v2/market/orders', token: token, params: { market: 'btcusd', side: 'sell', volume: '1.0', ord_type: 'market' }
 
         expect(response.code).to eq '422'
-        expect(response).to include_api_error('market.account.not_enough_funds')
+        expect(response).to include_api_error('market.account.insufficient_balance')
       end
 
       it 'creates sell order' do
diff --git a/spec/api/v2/mount_spec.rb b/spec/api/v2/mount_spec.rb
index 6176311dee..4c1e6068c1 100644
--- a/spec/api/v2/mount_spec.rb
+++ b/spec/api/v2/mount_spec.rb
@@ -5,7 +5,9 @@ module API
   module V2
     class Mount
       get('/null') { '' }
-      get('/broken') { raise Error, code: 2_014_310, text: 'MtGox bankrupt' }
+      get('/record-not-found') { raise ActiveRecord::RecordNotFound }
+      get('/auth-error') { raise Peatio::Auth::Error }
+      get('/standard-error') { raise StandardError }
     end
   end
 end
@@ -17,10 +19,22 @@ class Mount
   end
 
   context 'handle exception on request processing' do
-    it 'should render json error message' do
-      get '/api/v2/broken'
-      expect(response.code).to eq '400'
-      expect(JSON.parse(response.body)).to eq('error' => { 'code' => 2_014_310, 'message' => 'MtGox bankrupt' })
+    it 'returns array with record.not_found error' do
+      get '/api/v2/record-not-found'
+      expect(response.code).to eq '404'
+      expect(response).to include_api_error('record.not_found')
+    end
+
+    it 'returns array with jwt.decode_and_verify error' do
+      get '/api/v2/auth-error'
+      expect(response.code).to eq '401'
+      expect(response).to include_api_error('jwt.decode_and_verify')
+    end
+
+    it 'returns array with server.internal_error error' do
+      get '/api/v2/standard-error'
+      expect(response.code).to eq '500'
+      expect(response).to include_api_error('server.internal_error')
     end
   end