diff --git a/lib/yandex-checkout.rb b/lib/yandex-checkout.rb
index bcb80f6..56063e0 100644
--- a/lib/yandex-checkout.rb
+++ b/lib/yandex-checkout.rb
@@ -1,6 +1,7 @@
-require 'yandex-checkout/version'
+# frozen_string_literal: true
 
-module YandexCheckout
-  class Error < StandardError; end
-    # Your code goes here...
-end
+require 'evil/client'
+
+require 'yandex-checkout/version'
+require 'yandex-checkout/payment'
+require 'yandex-checkout/refund'
diff --git a/lib/yandex-checkout/payment.rb b/lib/yandex-checkout/payment.rb
new file mode 100644
index 0000000..4818247
--- /dev/null
+++ b/lib/yandex-checkout/payment.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+module YandexCheckout
+  class Payment < Evil::Client
+    option :shop_id,  proc(&:to_s)
+    option :api_key,  proc(&:to_s)
+
+    path { 'https://payment.yandex.net/api/v3' }
+    security { basic_auth shop_id, api_key }
+
+    # http_method { :get }
+    scope :payments do
+      operation :status do
+        option :payment_id, proc(&:to_s)
+
+        http_method :get
+        path { "payments/#{payment_id}" }
+
+        response 200 do |_status, _headers, body|
+          p JSON.parse(*body)
+        end
+
+        # Parses json response, wraps it into model with [#error] and raises
+        # an exception where [ResponseError#response] contains the model instance
+
+        response(400, 422) do |(status, *)|
+          raise "#{status}: Record invalid"
+        end
+
+        response(404) do |(_status, *)|
+          p 'Record Not Found'
+          # raise "#{status}: Record not found"
+        end
+      end
+
+      operation :create do
+        option :payment
+        option :idempotency_key, optional: true
+
+        http_method :post
+
+        path { 'payments' }
+        # query { { params: params } }
+        format 'json'
+        headers 'Idempotence-Key' => '244afbdc-000f-5000-a000-12526186ce10'
+        body { payment }
+
+        response 200 do |_status, _headers, body|
+          p JSON.parse(*body)
+        end
+
+        # Parses json response, wraps it into model with [#error] and raises
+        # an exception where [ResponseError#response] contains the model instance
+
+        response(400, 422) do |(status, *)|
+          raise "#{status}: Record invalid"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/yandex-checkout/refund.rb b/lib/yandex-checkout/refund.rb
new file mode 100644
index 0000000..0487845
--- /dev/null
+++ b/lib/yandex-checkout/refund.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module YandexCheckout
+  class Refund < Evil::Client
+
+  end
+end