diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright Author name here (c) 2019
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Author name here nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,1 @@
+# servant-swagger-tags
diff --git a/Setup.hs b/Setup.hs
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--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/servant-swagger-tags.cabal b/servant-swagger-tags.cabal
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--- /dev/null
+++ b/servant-swagger-tags.cabal
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+name:                servant-swagger-tags
+version:             0.1.0.0
+synopsis:            Swagger Tags for Servant
+-- description:         Swagger Tags for Servant
+homepage:            https://github.com/nakaji-dayo/servant-swagger-tags#readme
+license:             BSD3
+license-file:        LICENSE
+author:              Daishi Nakajima
+maintainer:          nakaji.dayo@mail.com
+copyright:           2019 Daishi Nakajima
+category:            Web, Servant, Swagger
+build-type:          Simple
+extra-source-files:  README.md
+cabal-version:       >=1.10
+
+library
+  hs-source-dirs:      src
+  exposed-modules:     Servant.Swagger.Tags
+  build-depends:       base >= 4.7 && < 5
+                     , servant
+                     , servant-server
+                     , servant-swagger
+                     , servant-mock
+                     , swagger2
+                     , text
+                     , containers
+                     , lens
+  default-language:    Haskell2010
+
+source-repository head
+  type:     git
+  location: https://github.com/nakaji-dayo/servant-swagger-tags
diff --git a/src/Servant/Swagger/Tags.hs b/src/Servant/Swagger/Tags.hs
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--- /dev/null
+++ b/src/Servant/Swagger/Tags.hs
@@ -0,0 +1,35 @@
+-- move lobrary
+{-# LANGUAGE DataKinds             #-}
+{-# LANGUAGE FlexibleInstances     #-}
+{-# LANGUAGE KindSignatures        #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE ScopedTypeVariables   #-}
+{-# LANGUAGE TypeFamilies          #-}
+{-# LANGUAGE TypeOperators         #-}
+
+module Servant.Swagger.Tags where
+
+import           Control.Lens
+import qualified Data.Set        as S
+import           Data.Swagger
+import qualified Data.Text       as Text
+import           Data.Typeable   (Typeable)
+import           GHC.TypeLits    (KnownSymbol, Symbol, symbolVal)
+import           Servant         hiding (Context)
+import           Servant.Mock
+import           Servant.Swagger
+
+data Tags (sym :: Symbol)
+    deriving (Typeable)
+
+instance HasServer api ctx => HasServer (Tags tags :> api) ctx where
+  type ServerT (Tags tags :> api) m = ServerT api m
+  route _ = route (Proxy :: Proxy api)
+  hoistServerWithContext _ = hoistServerWithContext (Proxy :: Proxy api)
+
+instance (KnownSymbol tags, HasSwagger api) => HasSwagger (Tags tags :> api) where
+  toSwagger _ = toSwagger (Proxy :: Proxy api)
+    & allOperations.tags %~ S.union (S.fromList [Text.pack (symbolVal (Proxy :: Proxy tags))])
+
+instance HasMock api context => HasMock (Tags t :> api) context where
+    mock _ = mock (Proxy :: Proxy api)