diff --git a/lib/muffin_man.rb b/lib/muffin_man.rb
index ccdefef..ca50a8d 100644
--- a/lib/muffin_man.rb
+++ b/lib/muffin_man.rb
@@ -20,6 +20,7 @@
 require "muffin_man/feeds/v20210630"
 require "muffin_man/notifications/v1"
 require "muffin_man/merchant_fulfillment/v0"
+require "muffin_man/definitions/v20200901"
 
 module MuffinMan
   class Error < StandardError; end
diff --git a/lib/muffin_man/definitions/v20200901.rb b/lib/muffin_man/definitions/v20200901.rb
new file mode 100644
index 0000000..8da7a1c
--- /dev/null
+++ b/lib/muffin_man/definitions/v20200901.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module MuffinMan
+  module Definitions
+    class V20200901 < SpApiClient
+      def search_definitions_product_types(marketplace_ids, keywords: nil)
+        @local_var_path = "/definitions/2020-09-01/productTypes"
+        @marketplace_ids = marketplace_ids.is_a?(Array) ? marketplace_ids : [marketplace_ids]
+        @keywords = keywords.is_a?(Array) ? keywords : [keywords]
+        @query_params = { marketplaceIds: @marketplace_ids.join(",") }
+        @query_params["keywords"] = @keywords.join(",") if keywords
+        @request_type = "GET"
+        call_api
+      end
+
+      def get_definitions_product_type(product_type, marketplace_ids, seller_id: nil, product_type_version: nil,
+                                       requirements: nil, requirements_enforced: nil, locale: nil)
+        @local_var_path = "/definitions/2020-09-01/productTypes/#{product_type}"
+        @marketplace_ids = marketplace_ids.is_a?(Array) ? marketplace_ids : [marketplace_ids]
+        @query_params = { marketplaceIds: @marketplace_ids.join(",") }
+        @query_params["sellerId"] = seller_id if seller_id
+        @query_params["productTypeVersion"] = product_type_version if product_type_version
+        @query_params["requirements"] = requirements.join(",") if requirements
+        @query_params["requirementsEnforced"] = requirements_enforced if requirements_enforced
+        @query_params["locale"] = locale if locale
+        @request_type = "GET"
+        call_api
+      end
+    end
+  end
+end