diff --git a/sky/services/firebase/firebase.mojom b/sky/services/firebase/firebase.mojom
index 484e98dc4e28d22fd6f1394ca6a83ade629b48c1..04f9a0b373f6e8f5d90e033bcccf5b39722d4c5b 100644
--- a/sky/services/firebase/firebase.mojom
+++ b/sky/services/firebase/firebase.mojom
@@ -15,7 +15,7 @@ enum EventType {
 
 struct DataSnapshot {
   string key;
-  string value;           // TODO(jackson): Support more value types
+  string jsonValue;
 };
 
 struct Error {
@@ -51,4 +51,5 @@ interface Firebase {
   AddChildEventListener(ChildEventListener listener);
   ObserveSingleEventOfType(EventType eventType) => (DataSnapshot snapshot);
   AuthWithOAuthToken(string provider, string credentials) => (Error? error, AuthData? authData);
+  SetValue(string jsonValue) => (Error? error);
 };
diff --git a/sky/services/firebase/ios/firebase_impl.h b/sky/services/firebase/ios/firebase_impl.h
index f96dd1d6e40c02a155aaf7dd026a1541f3f56f51..c733bb915f1f0128085185524ddc61f9b70a6c1e 100644
--- a/sky/services/firebase/ios/firebase_impl.h
+++ b/sky/services/firebase/ios/firebase_impl.h
@@ -35,12 +35,13 @@ class FirebaseImpl : public ::firebase::Firebase {
   void AddChildEventListener(
     ::firebase::ChildEventListenerPtr listener) override;
   void ObserveSingleEventOfType(
-      ::firebase::EventType eventType,
-      const ObserveSingleEventOfTypeCallback& callback) override;
+    ::firebase::EventType eventType,
+    const ObserveSingleEventOfTypeCallback& callback) override;
   void AuthWithOAuthToken(
     const mojo::String& provider,
     const mojo::String& credentials,
     const AuthWithOAuthTokenCallback& callback) override;
+  void SetValue(const mojo::String& jsonValue);
 
  private:
   mojo::StrongBinding<::firebase::Firebase> binding_;
diff --git a/sky/services/firebase/ios/firebase_impl.mm b/sky/services/firebase/ios/firebase_impl.mm
index 239fc9043b27e0e92f906ea6963b514087d9a249..bed899567b9a00b7b3202172ac3346e5c120ef5f 100644
--- a/sky/services/firebase/ios/firebase_impl.mm
+++ b/sky/services/firebase/ios/firebase_impl.mm
@@ -159,6 +159,11 @@ void FirebaseImpl::AuthWithOAuthToken(
   }];
 }
 
+void FirebaseImpl::SetValue(const mojo::String& jsonValue) {
+  // TODO(jackson): JSON deserialization
+  [client_ setValue:@(jsonValue.data())];
+}
+
 void FirebaseFactory::Create(
     mojo::ApplicationConnection* connection,
     mojo::InterfaceRequest<::firebase::Firebase> request) {
diff --git a/sky/services/firebase/src/org/domokit/firebase/FirebaseImpl.java b/sky/services/firebase/src/org/domokit/firebase/FirebaseImpl.java
index 48d6c76a168038cc1561e701d9297828feca49a0..ea795c22bbd305c40e1a0af97c15d8cbeac118e5 100644
--- a/sky/services/firebase/src/org/domokit/firebase/FirebaseImpl.java
+++ b/sky/services/firebase/src/org/domokit/firebase/FirebaseImpl.java
@@ -7,11 +7,17 @@ package org.domokit.firebase;
 import android.content.Context;
 import android.util.Log;
 
-import java.io.IOException;
-
+import com.firebase.client.AuthData;
 import com.firebase.client.FirebaseError;
 import com.firebase.client.Firebase.AuthResultHandler;
-import com.firebase.client.AuthData;
+import com.firebase.client.Firebase.CompletionListener;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.HashMap;
 
 import org.chromium.mojo.bindings.ConnectionErrorHandler;
 import org.chromium.mojo.bindings.InterfaceRequest;
@@ -21,6 +27,10 @@ import org.chromium.mojom.firebase.EventType;
 import org.chromium.mojom.firebase.Firebase;
 import org.chromium.mojom.firebase.ValueEventListener;
 
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
 public class FirebaseImpl implements org.chromium.mojom.firebase.Firebase {
     private static final String TAG = "FirebaseImpl";
     static private Context mContext;
@@ -149,27 +159,86 @@ public class FirebaseImpl implements org.chromium.mojom.firebase.Firebase {
             responseCopy.call(null, mojoAuthData);
           }
           public void onAuthenticationError(FirebaseError error) {
-            org.chromium.mojom.firebase.Error mojoError =
-              new org.chromium.mojom.firebase.Error();
-            mojoError.code = error.getCode();
-            mojoError.message = error.getMessage();
-            responseCopy.call(mojoError, null);
+            responseCopy.call(toMojoError(error), null);
           }
         });
     }
 
+    @Override
+    public void setValue(String jsonValue, SetValueResponse response) {
+        final SetValueResponse responseCopy = response;
+        try {
+          JSONObject root = new JSONObject(jsonValue);
+          Object value = toMap(root).get("value");
+          mClient.setValue(value, null, new CompletionListener() {
+              @Override
+              public void onComplete(FirebaseError error, com.firebase.client.Firebase ref) {
+                  responseCopy.call(toMojoError(error));
+              }
+          });
+        } catch(JSONException e) {
+          org.chromium.mojom.firebase.Error mojoError =
+            new org.chromium.mojom.firebase.Error();
+          mojoError.code = -1;
+          mojoError.message = "setValue JSONException";
+          Log.e(TAG, "setValue JSONException", e);
+          responseCopy.call(mojoError);
+        }
+    }
+
     DataSnapshot toMojoSnapshot(com.firebase.client.DataSnapshot snapshot) {
         DataSnapshot mojoSnapshot = new DataSnapshot();
         mojoSnapshot.key = snapshot.getKey();
-        mojoSnapshot.value = (String)snapshot.getValue();
+        try {
+          JSONObject jsonObject = new JSONObject();
+          jsonObject.put("value", snapshot.getValue());
+          mojoSnapshot.jsonValue = jsonObject.toString();
+        } catch (JSONException e) {
+          Log.e(TAG, "toMojoSnapshot JSONException", e);
+        }
         return mojoSnapshot;
     }
 
     org.chromium.mojom.firebase.Error toMojoError(FirebaseError error) {
+        if (error == null)
+          return null;
         org.chromium.mojom.firebase.Error mojoError =
           new org.chromium.mojom.firebase.Error();
         mojoError.code = error.getCode();
         mojoError.message = error.getMessage();
         return mojoError;
     }
+
+    // public domain code from https://gist.github.com/codebutler/2339666
+    @SuppressWarnings({ "rawtypes", "unchecked" })
+    static Map<String, Object> toMap(JSONObject object) throws JSONException {
+        Map<String, Object> map = new HashMap();
+        Iterator keys = object.keys();
+        while (keys.hasNext()) {
+            String key = (String) keys.next();
+            map.put(key, fromJson(object.get(key)));
+        }
+        return map;
+    }
+
+    @SuppressWarnings({ "rawtypes", "unchecked" })
+    static List toList(JSONArray array) throws JSONException {
+        List list = new ArrayList();
+        for (int i = 0; i < array.length(); i++) {
+            list.add(fromJson(array.get(i)));
+        }
+        return list;
+    }
+
+    static Object fromJson(Object json) throws JSONException {
+        if (json == JSONObject.NULL) {
+            return null;
+        } else if (json instanceof JSONObject) {
+            return toMap((JSONObject) json);
+        } else if (json instanceof JSONArray) {
+            return toList((JSONArray) json);
+        } else {
+            return json;
+        }
+    }
 }