diff --git a/sky/services/platform/BUILD.gn b/sky/services/platform/BUILD.gn
index 5a52959de16..12972a79234 100644
--- a/sky/services/platform/BUILD.gn
+++ b/sky/services/platform/BUILD.gn
@@ -6,8 +6,10 @@ import("//mojo/public/tools/bindings/mojom.gni")
 
 mojom("interfaces") {
   sources = [
-    "system_chrome.mojom",
+    "haptic_feedback.mojom",
     "path_provider.mojom",
+    "system_chrome.mojom",
+    "system_sound.mojom",
   ]
 }
 
diff --git a/sky/services/platform/haptic_feedback.mojom b/sky/services/platform/haptic_feedback.mojom
new file mode 100644
index 00000000000..86d956aed16
--- /dev/null
+++ b/sky/services/platform/haptic_feedback.mojom
@@ -0,0 +1,27 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+[DartPackage="sky_services"]
+module flutter.platform;
+
+/// Allows access to the haptic feedback interface on the device. This API is
+/// intentionally terse since it invokes default platform behavior. It is not
+/// suitable for use if you require more flexible access to device sensors and
+/// peripherals.
+interface HapticFeedback {
+  /// Provides haptic feedback to the user for a short duration.
+  ///
+  /// Platform Specific Notes:
+  ///       iOS: Uses the platform "sound" for vibration
+  ///            (via AudioServicesPlaySystemSound)
+  ///   Android: Uses the platform haptic feedback API that simulates a short
+  ///            a short tap on a virtual keyboard.
+  ///
+  /// Return Value:
+  ///   boolean indicating if the intent to provide haptic feedback to the user
+  ///   was successfully conveyed to the embedder. There may not be any actual
+  ///   feedback if the device does not have a vibrator or one is disabled in
+  ///   system settings.
+  Vibrate() => (bool success);
+};
diff --git a/sky/services/platform/system_sound.mojom b/sky/services/platform/system_sound.mojom
new file mode 100644
index 00000000000..8dad0a3f85e
--- /dev/null
+++ b/sky/services/platform/system_sound.mojom
@@ -0,0 +1,24 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+[DartPackage="sky_services"]
+module flutter.platform;
+
+/// A sound provided by the system
+enum SystemSoundType {
+  Click,
+};
+
+/// Allows easy access to the library of short system specific sounds for
+/// common tasks.
+interface SystemSound {
+  /// Play the specified system sound. If that sound is not present on the
+  /// system, this method is a no-op and returns `true`.
+  ///
+  /// Return Value:
+  ///   boolean indicating if the intent to play the specified sound was
+  ///   successfully conveyed to the embedder. No sound may actually play if the
+  ///   device is muted or the sound was not available on the platform.
+  Play(SystemSoundType type) => (bool success);
+};