diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright Moritz Angermann (c) 2016
+
+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 Moritz Angermann 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/Setup.hs b/Setup.hs
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--- /dev/null
+++ b/Setup.hs
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+import Distribution.Simple
+main = defaultMain
diff --git a/aeson-coerce.cabal b/aeson-coerce.cabal
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--- /dev/null
+++ b/aeson-coerce.cabal
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+name:                aeson-coerce
+version:             0.1.0.0
+synopsis:            Initial project template from stack
+description:         Please see README.md
+homepage:            https://github.com/lichtzwerge/aeson-coerce#readme
+license:             BSD3
+license-file:        LICENSE
+author:              Moritz Angermann
+maintainer:          moritz@lichtzwerge.de
+copyright:           lichtzwerge GmbH
+category:            Web
+build-type:          Simple
+-- extra-source-files:
+cabal-version:       >=1.10
+
+library
+  hs-source-dirs:      src
+  exposed-modules:     Data.Aeson.Coerce
+  build-depends:       aeson
+                     , base >= 4.7 && < 5
+                     , bytestring
+                     , containers
+                     , text
+  default-language:    Haskell2010
+
+source-repository head
+  type:     git
+  location: https://github.com/lichtzwerge/aeson-coerce
diff --git a/src/Data/Aeson/Coerce.hs b/src/Data/Aeson/Coerce.hs
new file mode 100644
--- /dev/null
+++ b/src/Data/Aeson/Coerce.hs
@@ -0,0 +1,29 @@
+module Data.Aeson.Coerce where
+
+import Data.Aeson as Aeson (Value(..), FromJSON, fromJSON, eitherDecode, Result(..))
+import Data.ByteString.Lazy (ByteString)
+import Data.Text (pack, unpack)
+
+type LazyByteString = ByteString
+
+class Coercable a where
+  -- I'd love to have
+  -- coerc :: a -> a
+  asString :: a -> a
+  asNumber :: a -> a
+
+instance Coercable Value where
+  asString (Number n) = String (pack $ show n)
+  asString (Bool b)   = String (pack $ show b)
+  asString _          = error "No coercion"
+  asNumber (String s) = Number (read $ unpack s)
+  asNumber (Bool b)   = Number $ if b then 1 else 0
+  asNumber _          = error "No coercion"
+
+eitherDecode :: FromJSON a => (Value -> Value) -> LazyByteString -> Either String a
+eitherDecode ops bs = do
+  val <- Aeson.eitherDecode bs
+  resultToEither . fromJSON $ ops val
+  where resultToEither :: Result a -> Either String a
+        resultToEither (Error e) = Left e
+        resultToEither (Success s) = Right s