diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -845,6 +845,7 @@
     'DoorkeeperBridgeGitHubIssue' => 'applications/doorkeeper/bridge/DoorkeeperBridgeGitHubIssue.php',
     'DoorkeeperBridgeJIRA' => 'applications/doorkeeper/bridge/DoorkeeperBridgeJIRA.php',
     'DoorkeeperBridgeJIRATestCase' => 'applications/doorkeeper/bridge/__tests__/DoorkeeperBridgeJIRATestCase.php',
+    'DoorkeeperBridgedObjectCurtainExtension' => 'applications/doorkeeper/engineextension/DoorkeeperBridgedObjectCurtainExtension.php',
     'DoorkeeperBridgedObjectInterface' => 'applications/doorkeeper/bridge/DoorkeeperBridgedObjectInterface.php',
     'DoorkeeperDAO' => 'applications/doorkeeper/storage/DoorkeeperDAO.php',
     'DoorkeeperExternalObject' => 'applications/doorkeeper/storage/DoorkeeperExternalObject.php',
@@ -5001,6 +5002,7 @@
     'DoorkeeperBridgeGitHubIssue' => 'DoorkeeperBridgeGitHub',
     'DoorkeeperBridgeJIRA' => 'DoorkeeperBridge',
     'DoorkeeperBridgeJIRATestCase' => 'PhabricatorTestCase',
+    'DoorkeeperBridgedObjectCurtainExtension' => 'PHUICurtainExtension',
     'DoorkeeperDAO' => 'PhabricatorLiskDAO',
     'DoorkeeperExternalObject' => array(
       'DoorkeeperDAO',
diff --git a/src/applications/doorkeeper/engineextension/DoorkeeperBridgedObjectCurtainExtension.php b/src/applications/doorkeeper/engineextension/DoorkeeperBridgedObjectCurtainExtension.php
new file mode 100644
--- /dev/null
+++ b/src/applications/doorkeeper/engineextension/DoorkeeperBridgedObjectCurtainExtension.php
@@ -0,0 +1,31 @@
+<?php
+
+final class DoorkeeperBridgedObjectCurtainExtension
+  extends PHUICurtainExtension {
+
+  const EXTENSIONKEY = 'doorkeeper.bridged-object';
+
+  public function shouldEnableForObject($object) {
+    return ($object instanceof DoorkeeperBridgedObjectInterface);
+  }
+
+  public function getExtensionApplication() {
+    return new PhabricatorDoorkeeperApplication();
+  }
+
+  public function buildCurtainPanel($object) {
+    $xobj = $object->getBridgedObject();
+    if (!$xobj) {
+      return null;
+    }
+
+    $tag = id(new DoorkeeperTagView())
+      ->setExternalObject($xobj);
+
+    return $this->newPanel()
+      ->setHeaderText(pht('Imported From'))
+      ->setOrder(5000)
+      ->appendChild($tag);
+  }
+
+}