diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -12,13 +12,14 @@
 
 import Data.Monoid ((<>))
 import Control.Monad.Catch (throwM, handle)
+import Control.Applicative (optional)
 
 
 -- * Options Parsing
 
 -- | Application-wide options
 newtype AppOpts = AppOpts
-  { url :: String
+  { url :: Maybe String
   }
 
 -- | Options for each field
@@ -26,8 +27,8 @@
 appOpts =
   AppOpts <$> urlOpt
   where
-    urlOpt :: Parser String
-    urlOpt = strArgument $
+    urlOpt :: Parser (Maybe String)
+    urlOpt = optional $ strArgument $
          metavar "TARGET"
       <> help "The websocket address to connect to - example:\
                 \ `ws://localhost:3000/foo`"
@@ -55,7 +56,12 @@
 
 -- | Translate the CLI parsed options to a sane type we can use in our app
 appOptsToEnv :: AppOpts -> IO Env
-appOptsToEnv (AppOpts u) =
+appOptsToEnv (AppOpts mu) = do
+  u <- case mu of
+    Nothing -> do
+      putStrLn "Websocket URI: "
+      getLine
+    Just x -> pure x
   case parseURI u of
     Nothing -> throwM $ URIParseException u
     Just u' ->
diff --git a/src/App.hs b/src/App.hs
--- a/src/App.hs
+++ b/src/App.hs
@@ -13,7 +13,6 @@
 import qualified Data.Text                  as T
 import qualified Data.Text.Lazy             as LT
 import qualified Data.Text.Lazy.Encoding    as LT
-import qualified Data.ByteString.Lazy.Char8 as LBS
 import Data.Monoid ((<>))
 import Control.Monad (forever, unless, void)
 import Control.Monad.IO.Class (liftIO)
diff --git a/src/App/Types.hs b/src/App/Types.hs
--- a/src/App/Types.hs
+++ b/src/App/Types.hs
@@ -6,9 +6,8 @@
 
 module App.Types where
 
-import Control.Monad.Reader (ReaderT (runReaderT), MonadReader)
+import Control.Monad.Reader (ReaderT (runReaderT))
 import Control.Monad.Catch (Exception)
-import Control.Monad.IO.Class (MonadIO)
 
 import System.IO (hPutStr, stderr)
 import System.Exit (exitFailure)
diff --git a/ws.cabal b/ws.cabal
--- a/ws.cabal
+++ b/ws.cabal
@@ -1,5 +1,5 @@
 Name:                   ws
-Version:                0.0.1
+Version:                0.0.2
 Author:                 Athan Clark <athan.clark@gmail.com>
 Maintainer:             Athan Clark <athan.clark@gmail.com>
 License:                BSD3