diff --git a/box/entities/account.rb b/box/entities/account.rb
deleted file mode 100644
index 32a32b63..00000000
--- a/box/entities/account.rb
+++ /dev/null
@@ -1,40 +0,0 @@
-# frozen_string_literal: true
-
-require "grape-entity"
-
-require_relative "ebics_user"
-
-module Box
-  module Entities
-    class Account < Grape::Entity
-      expose :name, documentation: {type: "String", desc: "Display name for given bank account"}
-      expose :iban, documentation: {type: "String", desc: "Unique bank account IBAN"}
-      expose :bic, documentation: {type: "String", desc: "Bank branch's unique BIC"}
-      expose :bankname, documentation: {type: "String", desc: "Name of bank account's hosting bank"}
-      expose :creditor_identifier, documentation: {type: "String", desc: "Creditor identifier used for direct debits"}
-      expose :balance_date, documentation: {type: "Date", desc: "Date of balance"}
-      expose :balance_in_cents, documentation: {type: "Integer", desc: "Account balance"}
-
-      expose(:test_mode, documentation: {type: "Boolean", desc: "Whether this is a test account"}) do |account|
-        account.mode == "File" || account.mode == "Fake"
-      end
-
-      expose(:ebics_user, if: ->(_account, options) { options[:include].try(:include?, "ebics_user") }) do |account|
-        ebics_user = account.ebics_user_for(options[:env]["box.user"].id)
-        if ebics_user
-          Entities::EbicsUser.represent(ebics_user, only: %i[ebics_user signature_class state submitted_at activated_at])
-        end
-      end
-
-      expose(:_links, documentation: {type: "Hash", desc: "Links to resources"}) do |account, _options|
-        {
-          self: Box.configuration.app_url + "/#{account.iban}",
-          credit: Box.configuration.app_url + "/#{account.iban}/credits",
-          debit: Box.configuration.app_url + "/#{account.iban}/debits",
-          statements: Box.configuration.app_url + "/#{account.iban}/statements",
-          transactions: Box.configuration.app_url + "/#{account.iban}/transactions"
-        }
-      end
-    end
-  end
-end
diff --git a/box/entities/event.rb b/box/entities/event.rb
deleted file mode 100644
index 11a15c4f..00000000
--- a/box/entities/event.rb
+++ /dev/null
@@ -1,34 +0,0 @@
-# frozen_string_literal: true
-
-require "grape-entity"
-
-require_relative "webhook_delivery"
-
-module Box
-  module Entities
-    class Event < Grape::Entity
-      expose :public_id, as: "id"
-      expose(:account, documentation: {type: "String", desc: "Display name for given bank account"}) do |event|
-        event.account.try(:iban)
-      end
-      expose :type
-      expose(:payload) do |event|
-        event.payload.delete "public_id"
-        event.payload
-      end
-      expose :triggered_at
-      expose :signature
-      expose :webhook_status
-      expose :webhook_retries
-
-      expose :webhook_deliveries, using: Entities::WebhookDelivery, if: {type: "full"}
-
-      expose(:_links, documentation: {type: "Hash", desc: "Links to resources"}) do |event, _options|
-        {
-          self: Box.configuration.app_url + "/events/#{event.public_id}",
-          account: Box.configuration.app_url + "/accounts/#{event.account.try(:iban)}"
-        }
-      end
-    end
-  end
-end
diff --git a/box/validations/unique_transaction.rb b/box/validations/unique_transaction.rb
deleted file mode 100644
index cd7ac3ab..00000000
--- a/box/validations/unique_transaction.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-# frozen_string_literal: true
-
-require "grape"
-
-require_relative "../models/transaction"
-
-module Box
-  class UniqueTransaction < Grape::Validations::Validators::Base
-    def validate_param!(attr_name, params)
-      unless Transaction.where(attr_name => params[attr_name]).count == 0
-        raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)], message: "must be unique"
-      end
-    end
-  end
-end