diff --git a/ChangeLog.md b/ChangeLog.md
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+++ b/ChangeLog.md
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+# Changelog for http2-grpc-proto-lens
+
+## Unreleased changes
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+Copyright Author name here (c) 2018
+
+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
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+# http2-grpc-types
+
+A module to put in common HTTP2/gRPC types, values, and helpers.
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/http2-grpc-proto-lens.cabal b/http2-grpc-proto-lens.cabal
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--- /dev/null
+++ b/http2-grpc-proto-lens.cabal
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+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.31.2.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: 55c756b55c80ecf8c0e187e1f0b8ec7ff8d54ad1ad8f84a823599f9c2ea01582
+
+name:           http2-grpc-proto-lens
+version:        0.1.0.0
+synopsis:       Encoders based on `proto-lens` for gRPC over HTTP2.
+description:    Please see the README on GitHub at <https://github.com/haskell-grpc-native/http2-grpc-haskell/blob/master/http2-grpc-proto-lens/README.md>
+category:       Network
+homepage:       https://github.com/haskell-grpc-native/http2-grpc-haskell#readme
+bug-reports:    https://github.com/haskell-grpc-native/http2-grpc-haskell/issues
+author:         Lucas DiCioccio, Alejandro Serrano
+maintainer:     lucas@dicioccio.fr
+copyright:      2018, 2019 Lucas DiCioccio, Alejandro Serrano
+license:        BSD3
+license-file:   LICENSE
+build-type:     Simple
+extra-source-files:
+    README.md
+    ChangeLog.md
+
+source-repository head
+  type: git
+  location: https://github.com/haskell-grpc-native/http2-grpc-haskell
+
+library
+  exposed-modules:
+      Network.GRPC.HTTP2.ProtoLens
+  other-modules:
+      Paths_http2_grpc_proto_lens
+  hs-source-dirs:
+      src
+  ghc-options: -Wall
+  build-depends:
+      base >=4.11 && <5
+    , binary >=0.8.5 && <0.11
+    , bytestring >=0.10.8 && <0.11
+    , case-insensitive >=1.2.0 && <1.3
+    , http2-grpc-types
+    , proto-lens >=0.5 && <0.7
+    , zlib >=0.6.2 && <0.7
+  default-language: Haskell2010
diff --git a/src/Network/GRPC/HTTP2/ProtoLens.hs b/src/Network/GRPC/HTTP2/ProtoLens.hs
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--- /dev/null
+++ b/src/Network/GRPC/HTTP2/ProtoLens.hs
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+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE UndecidableInstances #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE TypeFamilies #-}
+
+module Network.GRPC.HTTP2.ProtoLens where
+
+import           Data.Binary.Builder (fromByteString, singleton, putWord32be)
+import           Data.Binary.Get (getByteString, getInt8, getWord32be, runGetIncremental)
+import qualified Data.ByteString.Char8 as ByteString
+import           Data.ProtoLens.Encoding (encodeMessage, decodeMessage)
+import           Data.ProtoLens.Message (Message)
+import           Data.ProtoLens.Service.Types (Service(..), HasMethod, HasMethodImpl(..))
+import           Data.Proxy (Proxy(..))
+import           GHC.TypeLits (Symbol, symbolVal)
+
+import Network.GRPC.HTTP2.Types
+import Network.GRPC.HTTP2.Encoding
+
+-- | A proxy type for giving static information about RPCs.
+data RPC (s :: *) (m :: Symbol) = RPC
+
+instance (Service s, HasMethod s m) => IsRPC (RPC s m) where
+  path rpc = "/" <> pkg rpc Proxy <> "." <> srv rpc Proxy <> "/" <> meth rpc Proxy
+    where
+      pkg :: (Service s) => RPC s m -> Proxy (ServicePackage s) -> HeaderValue
+      pkg _ p = ByteString.pack $ symbolVal p
+
+      srv :: (Service s) => RPC s m -> Proxy (ServiceName s) -> HeaderValue
+      srv _ p = ByteString.pack $ symbolVal p
+
+      meth :: (Service s, HasMethod s m) => RPC s m -> Proxy (MethodName s m) -> HeaderValue
+      meth _ p = ByteString.pack $ symbolVal p 
+  {-# INLINE path #-}
+
+instance (Service s, HasMethod s m, i ~ MethodInput s m)
+         => GRPCInput (RPC s m) i where
+  encodeInput _ = encode
+  decodeInput _ = decoder
+
+instance (Service s, HasMethod s m, i ~ MethodOutput s m)
+         => GRPCOutput (RPC s m) i where
+  encodeOutput _ = encode
+  decodeOutput _ = decoder
+
+-- | Decoder for gRPC/HTTP2-encoded Protobuf messages.
+decoder :: Message a => Compression -> Decoder (Either String a)
+decoder compression = runGetIncremental $ do
+    isCompressed <- getInt8      -- 1byte
+    let decompress = if isCompressed == 0 then pure else _decompressionFunction compression
+    n <- getWord32be             -- 4bytes
+    decodeMessage <$> (decompress =<< getByteString (fromIntegral n))
+
+-- | Encodes as binary using gRPC/HTTP2 framing.
+encode :: Message m => Compression -> m -> Builder
+encode compression plain =
+    mconcat [ singleton (if _compressionByteSet compression then 1 else 0)
+            , putWord32be (fromIntegral $ ByteString.length bin)
+            , fromByteString bin
+            ]
+  where
+    bin = _compressionFunction compression $ encodeMessage plain