diff --git a/extensions/amp-sidebar/amp-sidebar.md b/extensions/amp-sidebar/amp-sidebar.md
new file mode 100644
index 000000000000..7d3bdfda129f
--- /dev/null
+++ b/extensions/amp-sidebar/amp-sidebar.md
@@ -0,0 +1,28 @@
+<!---
+Copyright 2016 The AMP HTML Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS-IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+# <a name="amp-sidebar"></a> `amp-sidebar`
+
+<table>
+  <tr>
+    <td width="40%"><strong>Description</strong></td>
+    <td>A sidebar provides a way to display meta content intended for temporary access (navigation links, buttons, menus, etc.).The sidebar can be revealed by a button tap while the main content remains visually underneath.</td>
+  </tr>
+  <tr>
+    <td width="40%"><strong>Availability</strong></td>
+    <td><div>Experimental</div><div>Work in progress.</div></td>
+  </tr>
+</table>
\ No newline at end of file
diff --git a/tools/experiments/experiments.js b/tools/experiments/experiments.js
index 80c4607c204c..e0da38047d35 100644
--- a/tools/experiments/experiments.js
+++ b/tools/experiments/experiments.js
@@ -56,6 +56,13 @@ const EXPERIMENTS = [
     spec: 'https://github.com/ampproject/amphtml/blob/master/' +
         'extensions/amp-social-share/amp-social-share.md',
   },
+  // Amp Sidebar
+  {
+    id: 'amp-sidebar',
+    name: 'AMP Sidebar',
+    spec: 'https://github.com/ampproject/amphtml/blob/master/extensions/' +
+        'amp-sidebar/amp-sidebar.md',
+  },
 ];