diff --git a/apiary-cookie.cabal b/apiary-cookie.cabal
--- a/apiary-cookie.cabal
+++ b/apiary-cookie.cabal
@@ -1,5 +1,5 @@
 name:                apiary-cookie
-version:             0.4.3.3
+version:             0.5.1.0
 x-revision:          1
 synopsis:            Cookie support for apiary web framework.
 description:
@@ -25,11 +25,13 @@
                      , mtl                >=2.1   && <2.3
                      , transformers       >=0.3   && <0.5
                      , bytestring         >=0.10  && <0.11
-                     , apiary             >=0.4   && <0.6
+                     , apiary             >=0.5.1 && <0.6
                      , cookie             >=0.4   && <0.5
                      , clientsession      >=0.9   && <0.10
                      , blaze-builder      >=0.3   && <0.4
                      , data-default-class >=0.0   && <0.1
+                     , wai                >=2.1   && <2.2
+                     , tagged             >=0.7   && <0.8
 
   hs-source-dirs:      src
   ghc-options:         -O2 -Wall
diff --git a/src/Web/Apiary/Cookie.hs b/src/Web/Apiary/Cookie.hs
--- a/src/Web/Apiary/Cookie.hs
+++ b/src/Web/Apiary/Cookie.hs
@@ -59,6 +59,8 @@
     , withCookie
     -- * setter
     , setCookie
+    -- * filter
+    , cookie
     -- * getter
     , getCookies, getCookies'
     , getCookie, getCookie'
diff --git a/src/Web/Apiary/Cookie/Internal.hs b/src/Web/Apiary/Cookie/Internal.hs
--- a/src/Web/Apiary/Cookie/Internal.hs
+++ b/src/Web/Apiary/Cookie/Internal.hs
@@ -13,10 +13,16 @@
 import Control.Monad.Trans
 import Control.Monad.Trans.Maybe
 
+import Network.Wai
 import Web.Apiary
 import Web.ClientSession
 import Web.Cookie
+import Data.Maybe
+import Data.Proxy
 
+import Control.Monad.Apiary.Filter.Internal
+import Control.Monad.Apiary.Filter.Internal.Query
+
 import Blaze.ByteString.Builder
 import qualified Data.ByteString as S
 
@@ -32,6 +38,35 @@
 
 type HasCookie = ?webApiaryCookieCookie :: Cookie
 
+cond :: (a -> Bool) -> (a -> b) -> (a -> b) -> a -> b
+cond p t f a = if p a then t a else f a
+
+-- | cookie filter. since 0.5.1.0.
+--
+-- can use like 'query' function.
+--
+-- example:
+--
+-- @
+-- cookie "foo" pFirst pInt  -- get first Int parameter from foo.
+-- cookie "bar" pOption pDouble  -- get first Double parameter from bar, allows no cookie.
+-- cookie "baz" pMany (pMaybe pString)  -- get zero or more baz cookies. allows cookie decrypt failure.
+-- @
+cookie :: (Strategy w, Query a, HasCookie, Monad m)
+       => S.ByteString
+       -> Proxy (w a)
+       -> ApiaryT (SNext w as a) m b
+       -> ApiaryT as m b
+cookie k p = function $ \l r -> readStrategy k p (cookie' r) l
+
+cookie' :: HasCookie => Request -> [(S.ByteString, Maybe S.ByteString)]
+cookie' = 
+    map (\(k,b) -> (k, decrypt (key ?webApiaryCookieCookie) b)) .
+    concatMap parseCookies .
+    take 100 . -- avoid hashdos
+    mapMaybe (cond (("cookie" ==) . fst) (Just . snd) (const Nothing)) .
+    requestHeaders
+
 -- | Give cookie encryption key.
 withCookie :: CookieConfig -> (HasCookie => IO b) -> IO b
 withCookie conf f = do
@@ -44,6 +79,7 @@
     let s = toByteString . renderSetCookie $ sc { setCookieValue = v' }
     addHeader "set-cookie" s
 
+{-# DEPRECATED getCookies, getCookies', getCookie, getCookie' "use cookie filter" #-}
 -- | get cookies. first Maybe indicate cookie header exists or not, 
 -- second Maybe indicate decryption status.
 getCookies :: (Monad m, HasCookie) => ActionT m (Maybe [(S.ByteString, Maybe S.ByteString)])