diff --git a/app/contracts/application_contract.rb b/app/contracts/application_contract.rb
index f80b163..1490cf6 100644
--- a/app/contracts/application_contract.rb
+++ b/app/contracts/application_contract.rb
@@ -3,6 +3,8 @@
 require 'dry-validation'
 
 class ApplicationContract < Dry::Validation::Contract
+  include Supports::ApplicationContract::SwaggerInput
+
   config.messages.backend = :i18n
 
   register_macro(:password_confirmation) do
diff --git a/app/contracts/users/passwords/send_instructions_contract.rb b/app/contracts/users/passwords/send_instructions_contract.rb
index c59ba72..6acddfd 100644
--- a/app/contracts/users/passwords/send_instructions_contract.rb
+++ b/app/contracts/users/passwords/send_instructions_contract.rb
@@ -5,6 +5,8 @@ module Passwords
     class SendInstructionsContract < ApplicationContract
       params do
         required(:email).filled(Types::Email)
+        required(:client_id).filled(:string)
+        required(:client_secret).filled(:string)
       end
     end
   end
diff --git a/app/contracts/users/passwords/update_contract.rb b/app/contracts/users/passwords/update_contract.rb
index 8dfbf55..67800b1 100644
--- a/app/contracts/users/passwords/update_contract.rb
+++ b/app/contracts/users/passwords/update_contract.rb
@@ -7,6 +7,8 @@ class UpdateContract < ApplicationContract
         required(:reset_password_token).filled(:string)
         required(:password) { filled? & str? & min_size?(Devise.password_length.min) }
         required(:password_confirmation) { filled? & str? & min_size?(Devise.password_length.min) }
+        required(:client_id).filled(:string)
+        required(:client_secret).filled(:string)
       end
 
       rule(:password).validate(:password_confirmation)
diff --git a/app/contracts/users/registrations/register_contract.rb b/app/contracts/users/registrations/register_contract.rb
index 03269e3..bfc1f65 100644
--- a/app/contracts/users/registrations/register_contract.rb
+++ b/app/contracts/users/registrations/register_contract.rb
@@ -6,6 +6,8 @@ class RegisterContract < ApplicationContract
       params do
         required(:email).filled(Types::Email)
         required(:password).filled(:str?, min_size?: Devise.password_length.min)
+        required(:client_id).filled(:string)
+        required(:client_secret).filled(:string)
       end
     end
   end
diff --git a/app/controllers/users/passwords_controller.rb b/app/controllers/users/passwords_controller.rb
index 8bed593..bfbf629 100644
--- a/app/controllers/users/passwords_controller.rb
+++ b/app/controllers/users/passwords_controller.rb
@@ -27,7 +27,7 @@ def update
     private
 
     def password_params
-      params.permit(:email, :reset_password_token, :password, :password_confirmation)
+      params.permit(:email, :reset_password_token, :password, :password_confirmation, :client_id, :client_secret)
     end
   end
 end
diff --git a/app/controllers/users/registrations_controller.rb b/app/controllers/users/registrations_controller.rb
index 55d1441..2992bc6 100644
--- a/app/controllers/users/registrations_controller.rb
+++ b/app/controllers/users/registrations_controller.rb
@@ -18,7 +18,7 @@ def create
     private
 
     def registration_params
-      params.permit(:email, :password)
+      params.permit(:email, :password, :client_id, :client_secret)
     end
   end
 end
diff --git a/app/services/users_service/registrations/register.rb b/app/services/users_service/registrations/register.rb
index 95cbede..da0d66b 100644
--- a/app/services/users_service/registrations/register.rb
+++ b/app/services/users_service/registrations/register.rb
@@ -21,7 +21,9 @@ def call
       private
 
       def create_user
-        UsersService::Create.new(params:).call
+        allowed_params = params.except(:client_id, :client_secret)
+
+        UsersService::Create.new(params: allowed_params).call
       end
 
       def create_access_token(user)
diff --git a/app/swagger_docs/controllers/users/passwords_controller.rb b/app/swagger_docs/controllers/users/passwords_controller.rb
index 244003d..afe4fd5 100644
--- a/app/swagger_docs/controllers/users/passwords_controller.rb
+++ b/app/swagger_docs/controllers/users/passwords_controller.rb
@@ -19,7 +19,7 @@ class PasswordsController
             key :required, true
             content :'application/json' do
               schema do
-                key :'$ref', :UserResetPasswordInput
+                key :'$ref', :UsersPasswordsSendInstructionsContractInput
               end
             end
           end
@@ -65,7 +65,7 @@ class PasswordsController
             key :required, true
             content :'application/json' do
               schema do
-                key :'$ref', :UserUpdatePasswordInput
+                key :'$ref', :UsersPasswordsUpdateContractInput
               end
             end
           end
diff --git a/app/swagger_docs/controllers/users/registrations_controller.rb b/app/swagger_docs/controllers/users/registrations_controller.rb
index 7d94737..46b2102 100644
--- a/app/swagger_docs/controllers/users/registrations_controller.rb
+++ b/app/swagger_docs/controllers/users/registrations_controller.rb
@@ -19,7 +19,7 @@ class RegistrationsController
             key :required, true
             content :'application/json' do
               schema do
-                key :'$ref', :UserSignUpInput
+                key :'$ref', :UsersRegistrationsRegisterContractInput
               end
             end
           end
diff --git a/app/swagger_docs/inputs/user/reset_password_input.rb b/app/swagger_docs/inputs/user/reset_password_input.rb
deleted file mode 100644
index 19d605b..0000000
--- a/app/swagger_docs/inputs/user/reset_password_input.rb
+++ /dev/null
@@ -1,30 +0,0 @@
-# frozen_string_literal: true
-
-module Inputs
-  module User
-    class ResetPasswordInput
-      include Swagger::Blocks
-
-      swagger_component do
-        schema :UserResetPasswordInput do
-          key :required, %i[email client_id client_secret]
-
-          property :email do
-            key :type, :string
-            key :example, 'test@test.com'
-          end
-
-          property :client_id do
-            key :type, :string
-            key :example, 'e7c8f8f0-e8e0-4b0f-b8b1-f8f8f8f8f8f8'
-          end
-
-          property :client_secret do
-            key :type, :string
-            key :example, 'e7c8f8f0-e8e0-4b0f-b8b1-f8f8f8f8f8f8'
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/app/swagger_docs/inputs/user/sign_up_input.rb b/app/swagger_docs/inputs/user/sign_up_input.rb
deleted file mode 100644
index 2df84a2..0000000
--- a/app/swagger_docs/inputs/user/sign_up_input.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-# frozen_string_literal: true
-
-module Inputs
-  module User
-    class SignUpInput
-      include Swagger::Blocks
-
-      swagger_component do
-        schema :UserSignUpInput do
-          key :required, %i[email password client_id client_secret]
-
-          property :email do
-            key :type, :string
-            key :example, 'test@test.com'
-          end
-
-          property :password do
-            key :type, :string
-            key :example, 'password'
-          end
-
-          property :client_id do
-            key :type, :string
-            key :example, 'e7c8f8f0-e8e0-4b0f-b8b1-f8f8f8f8f8f8'
-          end
-
-          property :client_secret do
-            key :type, :string
-            key :example, 'e7c8f8f0-e8e0-4b0f-b8b1-f8f8f8f8f8f8'
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/app/swagger_docs/inputs/user/update_password_input.rb b/app/swagger_docs/inputs/user/update_password_input.rb
deleted file mode 100644
index f2044c7..0000000
--- a/app/swagger_docs/inputs/user/update_password_input.rb
+++ /dev/null
@@ -1,40 +0,0 @@
-# frozen_string_literal: true
-
-module Inputs
-  module User
-    class UpdatePasswordInput
-      include Swagger::Blocks
-
-      swagger_component do
-        schema :UserUpdatePasswordInput do
-          key :required, %i[reset_password_token password password_confirmation client_id client_secret]
-
-          property :reset_password_token do
-            key :type, :string
-            key :example, 'e7c8f8f0-e8e0-4b0f-b8b1-f8f8f8f8f8f8'
-          end
-
-          property :password do
-            key :type, :string
-            key :example, 'newpassword'
-          end
-
-          property :password_confirmation do
-            key :type, :string
-            key :example, 'newpassword'
-          end
-
-          property :client_id do
-            key :type, :string
-            key :example, 'e7c8f8f0-e8e0-4b0f-b8b1-f8f8f8f8f8f8'
-          end
-
-          property :client_secret do
-            key :type, :string
-            key :example, 'e7c8f8f0-e8e0-4b0f-b8b1-f8f8f8f8f8f8'
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/app/swagger_docs/swagger_docs.rb b/app/swagger_docs/swagger_docs.rb
index 0ae2e11..cf44259 100644
--- a/app/swagger_docs/swagger_docs.rb
+++ b/app/swagger_docs/swagger_docs.rb
@@ -3,6 +3,8 @@
 class SwaggerDocs
   include Swagger::Blocks
 
+  CONTACT_CLASSES = ApplicationContract.contract_classes
+
   SWAGGERED_CLASSES = [
     ## Controllers ##
     Controllers::Users::TokensController,
@@ -13,9 +15,6 @@ class SwaggerDocs
     Models::Meta,
     ## Inputs ##
     Inputs::User::SignInInput,
-    Inputs::User::SignUpInput,
-    Inputs::User::ResetPasswordInput,
-    Inputs::User::UpdatePasswordInput,
     Inputs::User::RevokeInput,
     ## Responses ##
     Responses::User::SignInResponse,
@@ -24,7 +23,7 @@ class SwaggerDocs
     Responses::User::UpdatePasswordResponse,
     Responses::ErrorResponse,
     self
-  ].freeze
+  ].concat(CONTACT_CLASSES).freeze
 
   swagger_root do
     key :openapi, '3.0.0'
diff --git a/config/initializers/dry_schema.rb b/config/initializers/dry_schema.rb
new file mode 100644
index 0000000..710deaa
--- /dev/null
+++ b/config/initializers/dry_schema.rb
@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+Dry::Schema.load_extensions(:json_schema)
diff --git a/config/locales/contracts/tr.yml b/config/locales/contracts/tr.yml
index 6ae8447..668e4f8 100644
--- a/config/locales/contracts/tr.yml
+++ b/config/locales/contracts/tr.yml
@@ -7,12 +7,18 @@ tr:
           params:
             email: E-posta
             password: Şifre
+            client_id: 'İstemci kimliği'
+            client_secret: 'İstemci parolası'
       passwords:
         updatecontract:
           params:
             password: Şifre
             password_confirmation: Şifre onayı
             reset_password_token: Şifre sıfırlama jetonu
+            client_id: 'İstemci kimliği'
+            client_secret: 'İstemci parolası'
         sendinstructionscontract:
           params:
             email: E-posta
+            client_id: 'İstemci kimliği'
+            client_secret: 'İstemci parolası'
diff --git a/docs/SWAGGER.md b/docs/SWAGGER.md
index 5d4d116..0156558 100644
--- a/docs/SWAGGER.md
+++ b/docs/SWAGGER.md
@@ -53,6 +53,41 @@ end
 ```
 ---
 ### Sample input
+All contracts are generating automatically as swagger input components for using easily.
+
+**Auto generated:**
+
+Sample contract:
+```ruby
+# frozen_string_literal: true
+
+module Users
+  module Passwords
+    class SendInstructionsContract < ApplicationContract
+      params do
+        required(:email).filled(Types::Email)
+        required(:client_id).filled(:string)
+        required(:client_secret).filled(:string)
+      end
+    end
+  end
+end
+```
+
+You can use just referring name as belowing:
+```ruby
+request_body do
+  key :description, 'User credentials'
+  key :required, true
+  content :'application/json' do
+    schema do
+      key :'$ref', :UsersPasswordsSendInstructionsContractInput
+    end
+  end
+end
+```
+
+**Custom:**
 ```ruby
 # frozen_string_literal: true
 
diff --git a/lib/supports/application_contract/swagger_input.rb b/lib/supports/application_contract/swagger_input.rb
new file mode 100644
index 0000000..55031c9
--- /dev/null
+++ b/lib/supports/application_contract/swagger_input.rb
@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+require 'active_support/all'
+
+module Supports
+  module ApplicationContract
+    module SwaggerInput
+      extend ActiveSupport::Concern
+
+      module ClassMethods
+        def _swagger_nodes
+          { component_node: OpenStruct.new(data: component_node_data) }
+        end
+
+        def contract_classes
+          Dir[Rails.root.join('app/contracts/**/*_contract.rb')].map do |path|
+            klass = path.split('/app/contracts/')
+                        .last
+                        .rpartition('.')
+                        .first
+                        .classify
+                        .constantize
+
+            next if klass.eql?(::ApplicationContract)
+
+            klass
+          end.reject(&:blank?)
+        end
+
+        private
+
+        def custom_schema_name
+          "#{name.gsub('::', '')}Input".to_sym
+        end
+
+        def custom_json_schema
+          json_schema = schema.json_schema(loose: true)
+
+          {
+            type: json_schema[:type],
+            properties: json_schema[:properties],
+            required: json_schema[:required]
+          }
+        end
+
+        def component_node_data
+          { schemas: { "#{custom_schema_name}": custom_json_schema } }
+        end
+      end
+    end
+  end
+end