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
@@ -2069,6 +2069,7 @@
     'PhabricatorApplicationTransactionWarningException' => 'applications/transactions/exception/PhabricatorApplicationTransactionWarningException.php',
     'PhabricatorApplicationTransactionWarningResponse' => 'applications/transactions/response/PhabricatorApplicationTransactionWarningResponse.php',
     'PhabricatorApplicationUninstallController' => 'applications/meta/controller/PhabricatorApplicationUninstallController.php',
+    'PhabricatorApplicationUninstallTransaction' => 'applications/meta/xactions/PhabricatorApplicationUninstallTransaction.php',
     'PhabricatorApplicationsApplication' => 'applications/meta/application/PhabricatorApplicationsApplication.php',
     'PhabricatorApplicationsController' => 'applications/meta/controller/PhabricatorApplicationsController.php',
     'PhabricatorApplicationsListController' => 'applications/meta/controller/PhabricatorApplicationsListController.php',
@@ -7533,6 +7534,7 @@
     'PhabricatorApplicationTransactionWarningException' => 'Exception',
     'PhabricatorApplicationTransactionWarningResponse' => 'AphrontProxyResponse',
     'PhabricatorApplicationUninstallController' => 'PhabricatorApplicationsController',
+    'PhabricatorApplicationUninstallTransaction' => 'PhabricatorApplicationTransactionType',
     'PhabricatorApplicationsApplication' => 'PhabricatorApplication',
     'PhabricatorApplicationsController' => 'PhabricatorController',
     'PhabricatorApplicationsListController' => 'PhabricatorApplicationsController',
diff --git a/src/applications/meta/controller/PhabricatorApplicationUninstallController.php b/src/applications/meta/controller/PhabricatorApplicationUninstallController.php
--- a/src/applications/meta/controller/PhabricatorApplicationUninstallController.php
+++ b/src/applications/meta/controller/PhabricatorApplicationUninstallController.php
@@ -3,17 +3,15 @@
 final class PhabricatorApplicationUninstallController
   extends PhabricatorApplicationsController {
 
-  private $application;
-  private $action;
-
   public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getViewer();
-    $this->action = $request->getURIData('action');
-    $this->application = $request->getURIData('application');
+    $user = $request->getUser();
+    $action = $request->getURIData('action');
+    $application_name = $request->getURIData('application');
 
-    $selected = id(new PhabricatorApplicationQuery())
+    $application = id(new PhabricatorApplicationQuery())
       ->setViewer($viewer)
-      ->withClasses(array($this->application))
+      ->withClasses(array($application_name))
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
@@ -21,11 +19,11 @@
         ))
       ->executeOne();
 
-    if (!$selected) {
+    if (!$application) {
       return new Aphront404Response();
     }
 
-    $view_uri = $this->getApplicationURI('view/'.$this->application);
+    $view_uri = $this->getApplicationURI('view/'.$application_name);
 
     $prototypes_enabled = PhabricatorEnv::getEnvConfig(
       'phabricator.show-prototypes');
@@ -34,7 +32,7 @@
       ->setUser($viewer)
       ->addCancelButton($view_uri);
 
-    if ($selected->isPrototype() && !$prototypes_enabled) {
+    if ($application->isPrototype() && !$prototypes_enabled) {
       $dialog
         ->setTitle(pht('Prototypes Not Enabled'))
         ->appendChild(
@@ -46,18 +44,40 @@
     }
 
     if ($request->isDialogFormPost()) {
-      $this->manageApplication();
-      return id(new AphrontRedirectResponse())->setURI($view_uri);
+      $xactions = array();
+      $template = $application->getApplicationTransactionTemplate();
+      $xactions[] = id(clone $template)
+        ->setTransactionType(
+            PhabricatorApplicationUninstallTransaction::TRANSACTIONTYPE)
+        ->setNewValue($action);
+
+      $editor = id(new PhabricatorApplicationEditor())
+        ->setActor($user)
+        ->setContentSourceFromRequest($request)
+        ->setContinueOnNoEffect(true)
+        ->setContinueOnMissingFields(true);
+
+      try {
+        $editor->applyTransactions($application, $xactions);
+        return id(new AphrontRedirectResponse())->setURI($view_uri);
+      } catch (PhabricatorApplicationTransactionValidationException $ex) {
+        $validation_exception = $ex;
+      }
+
+      return $this->newDialog()
+        ->setTitle(pht('Validation Failed'))
+        ->setValidationException($validation_exception)
+        ->addCancelButton($view_uri);
     }
 
-    if ($this->action == 'install') {
-      if ($selected->canUninstall()) {
+    if ($action == 'install') {
+      if ($application->canUninstall()) {
         $dialog
           ->setTitle(pht('Confirmation'))
           ->appendChild(
             pht(
               'Install %s application?',
-              $selected->getName()))
+              $application->getName()))
           ->addSubmitButton(pht('Install'));
 
       } else {
@@ -66,10 +86,10 @@
           ->appendChild(pht('You cannot install an installed application.'));
       }
     } else {
-      if ($selected->canUninstall()) {
+      if ($application->canUninstall()) {
         $dialog->setTitle(pht('Really Uninstall Application?'));
 
-        if ($selected instanceof PhabricatorHomeApplication) {
+        if ($application instanceof PhabricatorHomeApplication) {
           $dialog
             ->appendParagraph(
               pht(
@@ -86,7 +106,7 @@
             ->appendParagraph(
               pht(
                 'Really uninstall the %s application?',
-                $selected->getName()))
+                $application->getName()))
             ->addSubmitButton(pht('Uninstall'));
         }
       } else {
@@ -101,23 +121,4 @@
     return id(new AphrontDialogResponse())->setDialog($dialog);
   }
 
-  public function manageApplication() {
-    $key = 'phabricator.uninstalled-applications';
-    $config_entry = PhabricatorConfigEntry::loadConfigEntry($key);
-    $list = $config_entry->getValue();
-    $uninstalled = PhabricatorEnv::getEnvConfig($key);
-
-    if (isset($uninstalled[$this->application])) {
-      unset($list[$this->application]);
-    } else {
-      $list[$this->application] = true;
-    }
-
-    PhabricatorConfigEditor::storeNewValue(
-      $this->getViewer(),
-      $config_entry,
-      $list,
-      PhabricatorContentSource::newFromRequest($this->getRequest()));
-  }
-
 }
diff --git a/src/applications/meta/xactions/PhabricatorApplicationPolicyChangeTransaction.php b/src/applications/meta/xactions/PhabricatorApplicationPolicyChangeTransaction.php
--- a/src/applications/meta/xactions/PhabricatorApplicationPolicyChangeTransaction.php
+++ b/src/applications/meta/xactions/PhabricatorApplicationPolicyChangeTransaction.php
@@ -14,7 +14,7 @@
     return $application->getPolicy($capability);
   }
 
-  public function applyInternalEffects($object, $value) {
+  public function applyExternalEffects($object, $value) {
     $application = $object;
     $user = $this->getActor();
 
diff --git a/src/applications/meta/xactions/PhabricatorApplicationUninstallTransaction.php b/src/applications/meta/xactions/PhabricatorApplicationUninstallTransaction.php
new file mode 100644
--- /dev/null
+++ b/src/applications/meta/xactions/PhabricatorApplicationUninstallTransaction.php
@@ -0,0 +1,79 @@
+<?php
+
+final class PhabricatorApplicationUninstallTransaction
+  extends PhabricatorApplicationTransactionType {
+
+  const TRANSACTIONTYPE = 'application.uninstall';
+
+  public function generateOldValue($object) {
+    $key = 'phabricator.uninstalled-applications';
+    $config_entry = PhabricatorConfigEntry::loadConfigEntry($key);
+    $list = $config_entry->getValue();
+    $uninstalled = PhabricatorEnv::getEnvConfig($key);
+
+    if (isset($uninstalled[get_class($object)])) {
+      return 'uninstalled';
+    } else {
+      return 'installed';
+    }
+  }
+
+  public function generateNewValue($object, $value) {
+    if ($value === 'uninstall') {
+      return 'uninstalled';
+    } else {
+      return 'installed';
+    }
+  }
+
+  public function applyExternalEffects($object, $value) {
+    $application = $object;
+    $user = $this->getActor();
+
+    $key = 'phabricator.uninstalled-applications';
+    $config_entry = PhabricatorConfigEntry::loadConfigEntry($key);
+    $list = $config_entry->getValue();
+    $uninstalled = PhabricatorEnv::getEnvConfig($key);
+
+    if (isset($uninstalled[get_class($application)])) {
+      unset($list[get_class($application)]);
+    } else {
+      $list[get_class($application)] = true;
+    }
+
+    $editor = $this->getEditor();
+    $content_source = $editor->getContentSource();
+    PhabricatorConfigEditor::storeNewValue(
+      $user,
+      $config_entry,
+      $list,
+      $content_source);
+  }
+
+  public function getTitle() {
+    if ($this->getNewValue() === 'uninstalled') {
+      return pht(
+        '%s uninstalled this application.',
+        $this->renderAuthor());
+    } else {
+      return pht(
+        '%s installed this application.',
+        $this->renderAuthor());
+    }
+  }
+
+  public function getTitleForFeed() {
+    if ($this->getNewValue() === 'uninstalled') {
+      return pht(
+        '%s uninstalled %s.',
+        $this->renderAuthor(),
+        $this->renderObject());
+    } else {
+      return pht(
+        '%s installed %s.',
+        $this->renderAuthor(),
+        $this->renderObject());
+    }
+  }
+
+}