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
@@ -790,6 +790,7 @@
     'DiffusionRepositoryTag' => 'applications/diffusion/data/DiffusionRepositoryTag.php',
     'DiffusionRepositoryTestAutomationController' => 'applications/diffusion/controller/DiffusionRepositoryTestAutomationController.php',
     'DiffusionRepositoryURIEditController' => 'applications/diffusion/controller/DiffusionRepositoryURIEditController.php',
+    'DiffusionRepositoryURIViewController' => 'applications/diffusion/controller/DiffusionRepositoryURIViewController.php',
     'DiffusionRepositoryURIsIndexEngineExtension' => 'applications/diffusion/engineextension/DiffusionRepositoryURIsIndexEngineExtension.php',
     'DiffusionRepositoryURIsManagementPanel' => 'applications/diffusion/management/DiffusionRepositoryURIsManagementPanel.php',
     'DiffusionRequest' => 'applications/diffusion/request/DiffusionRequest.php',
@@ -3244,6 +3245,7 @@
     'PhabricatorRepositoryURIQuery' => 'applications/repository/query/PhabricatorRepositoryURIQuery.php',
     'PhabricatorRepositoryURITestCase' => 'applications/repository/storage/__tests__/PhabricatorRepositoryURITestCase.php',
     'PhabricatorRepositoryURITransaction' => 'applications/repository/storage/PhabricatorRepositoryURITransaction.php',
+    'PhabricatorRepositoryURITransactionQuery' => 'applications/repository/query/PhabricatorRepositoryURITransactionQuery.php',
     'PhabricatorRepositoryVCSPassword' => 'applications/repository/storage/PhabricatorRepositoryVCSPassword.php',
     'PhabricatorRepositoryVersion' => 'applications/repository/constants/PhabricatorRepositoryVersion.php',
     'PhabricatorRepositoryWorkingCopyVersion' => 'applications/repository/storage/PhabricatorRepositoryWorkingCopyVersion.php',
@@ -5016,6 +5018,7 @@
     'DiffusionRepositoryTag' => 'Phobject',
     'DiffusionRepositoryTestAutomationController' => 'DiffusionRepositoryEditController',
     'DiffusionRepositoryURIEditController' => 'DiffusionRepositoryEditController',
+    'DiffusionRepositoryURIViewController' => 'DiffusionController',
     'DiffusionRepositoryURIsIndexEngineExtension' => 'PhabricatorIndexEngineExtension',
     'DiffusionRepositoryURIsManagementPanel' => 'DiffusionRepositoryManagementPanel',
     'DiffusionRequest' => 'Phobject',
@@ -7935,6 +7938,7 @@
     'PhabricatorRepositoryURIQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
     'PhabricatorRepositoryURITestCase' => 'PhabricatorTestCase',
     'PhabricatorRepositoryURITransaction' => 'PhabricatorApplicationTransaction',
+    'PhabricatorRepositoryURITransactionQuery' => 'PhabricatorApplicationTransactionQuery',
     'PhabricatorRepositoryVCSPassword' => 'PhabricatorRepositoryDAO',
     'PhabricatorRepositoryVersion' => 'Phobject',
     'PhabricatorRepositoryWorkingCopyVersion' => 'PhabricatorRepositoryDAO',
diff --git a/src/applications/diffusion/application/PhabricatorDiffusionApplication.php b/src/applications/diffusion/application/PhabricatorDiffusionApplication.php
--- a/src/applications/diffusion/application/PhabricatorDiffusionApplication.php
+++ b/src/applications/diffusion/application/PhabricatorDiffusionApplication.php
@@ -91,8 +91,11 @@
             => 'DiffusionCommitEditController',
           'manage/(?:(?P<panel>[^/]+)/)?'
             => 'DiffusionRepositoryManageController',
-          $this->getEditRoutePattern('uri/edit/')
-            => 'DiffusionRepositoryURIEditController',
+          'uri/' => array(
+            'view/(?P<id>[0-9]\d*)/' => 'DiffusionRepositoryURIViewController',
+            $this->getEditRoutePattern('edit/')
+              => 'DiffusionRepositoryURIEditController',
+          ),
           'edit/' => array(
             '' => 'DiffusionRepositoryEditMainController',
             'basic/' => 'DiffusionRepositoryEditBasicController',
diff --git a/src/applications/diffusion/controller/DiffusionRepositoryURIViewController.php b/src/applications/diffusion/controller/DiffusionRepositoryURIViewController.php
new file mode 100644
--- /dev/null
+++ b/src/applications/diffusion/controller/DiffusionRepositoryURIViewController.php
@@ -0,0 +1,162 @@
+<?php
+
+final class DiffusionRepositoryURIViewController
+  extends DiffusionController {
+
+  public function handleRequest(AphrontRequest $request) {
+    $response = $this->loadDiffusionContext();
+    if ($response) {
+      return $response;
+    }
+
+    $viewer = $this->getViewer();
+    $drequest = $this->getDiffusionRequest();
+    $repository = $drequest->getRepository();
+    $id = $request->getURIData('id');
+
+    $uri = id(new PhabricatorRepositoryURIQuery())
+      ->setViewer($viewer)
+      ->withIDs(array($id))
+      ->withRepositories(array($repository))
+      ->executeOne();
+    if (!$uri) {
+      return new Aphront404Response();
+    }
+
+    $title = array(
+      pht('URI'),
+      $repository->getDisplayName(),
+    );
+
+    $crumbs = $this->buildApplicationCrumbs();
+    $crumbs->addTextCrumb(
+      $repository->getDisplayName(),
+      $repository->getURI());
+    $crumbs->addTextCrumb(
+      pht('Manage'),
+      $repository->getPathURI('manage/'));
+
+    $panel_label = id(new DiffusionRepositoryURIsManagementPanel())
+      ->getManagementPanelLabel();
+    $panel_uri = $repository->getPathURI('manage/uris/');
+    $crumbs->addTextCrumb($panel_label, $panel_uri);
+
+    $crumbs->addTextCrumb(pht('URI %d', $uri->getID()));
+
+    $header_text = pht(
+      '%s: URI %d',
+      $repository->getDisplayName(),
+      $uri->getID());
+
+    $header = id(new PHUIHeaderView())
+      ->setHeader($header_text)
+      ->setHeaderIcon('fa-pencil');
+    if ($uri->getIsDisabled()) {
+      $header->setStatus('fa-ban', 'dark', pht('Disabled'));
+    } else {
+      $header->setStatus('fa-check', 'bluegrey', pht('Active'));
+    }
+
+    $curtain = $this->buildCurtain($uri);
+    $details = $this->buildPropertySection($uri);
+
+    $timeline = $this->buildTransactionTimeline(
+      $uri,
+      new PhabricatorRepositoryURITransactionQuery());
+    $timeline->setShouldTerminate(true);
+
+    $view = id(new PHUITwoColumnView())
+      ->setHeader($header)
+      ->setMainColumn(
+        array(
+          $details,
+          $timeline,
+        ))
+      ->setCurtain($curtain);
+
+    return $this->newPage()
+      ->setTitle($title)
+      ->setCrumbs($crumbs)
+      ->appendChild($view);
+  }
+
+  private function buildCurtain(PhabricatorRepositoryURI $uri) {
+    $viewer = $this->getViewer();
+
+    $can_edit = PhabricatorPolicyFilter::hasCapability(
+      $viewer,
+      $uri,
+      PhabricatorPolicyCapability::CAN_EDIT);
+
+    $edit_uri = $uri->getEditURI();
+
+    $curtain = $this->newCurtainView($uri);
+
+    $curtain->addAction(
+      id(new PhabricatorActionView())
+        ->setIcon('fa-pencil')
+        ->setName(pht('Edit URI'))
+        ->setHref($edit_uri)
+        ->setWorkflow(!$can_edit)
+        ->setDisabled(!$can_edit));
+
+    return $curtain;
+  }
+
+  private function buildPropertySection(PhabricatorRepositoryURI $uri) {
+    $viewer = $this->getViewer();
+
+    $properties = id(new PHUIPropertyListView())
+      ->setUser($viewer);
+
+    $properties->addProperty(pht('URI'), $uri->getDisplayURI());
+    $properties->addProperty(pht('Credential'), 'TODO');
+
+
+    $io_type = $uri->getEffectiveIOType();
+    $io_map = PhabricatorRepositoryURI::getIOTypeMap();
+    $io_spec = idx($io_map, $io_type, array());
+
+    $io_icon = idx($io_spec, 'icon');
+    $io_color = idx($io_spec, 'color');
+    $io_label = idx($io_spec, 'label', $io_type);
+    $io_note = idx($io_spec, 'note');
+
+    $io_item = id(new PHUIStatusItemView())
+      ->setIcon($io_icon, $io_color)
+      ->setTarget(phutil_tag('strong', array(), $io_label))
+      ->setNote($io_note);
+
+    $io_view = id(new PHUIStatusListView())
+      ->addItem($io_item);
+
+    $properties->addProperty(pht('I/O'), $io_view);
+
+
+    $display_type = $uri->getEffectiveDisplayType();
+    $display_map = PhabricatorRepositoryURI::getDisplayTypeMap();
+    $display_spec = idx($display_map, $display_type, array());
+
+    $display_icon = idx($display_spec, 'icon');
+    $display_color = idx($display_spec, 'color');
+    $display_label = idx($display_spec, 'label', $display_type);
+    $display_note = idx($display_spec, 'note');
+
+    $display_item = id(new PHUIStatusItemView())
+      ->setIcon($display_icon, $display_color)
+      ->setTarget(phutil_tag('strong', array(), $display_label))
+      ->setNote($display_note);
+
+    $display_view = id(new PHUIStatusListView())
+      ->addItem($display_item);
+
+    $properties->addProperty(pht('Display'), $display_view);
+
+
+    return id(new PHUIObjectBoxView())
+      ->setHeaderText(pht('Details'))
+      ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
+      ->appendChild($properties);
+  }
+
+}
diff --git a/src/applications/diffusion/editor/DiffusionURIEditEngine.php b/src/applications/diffusion/editor/DiffusionURIEditEngine.php
--- a/src/applications/diffusion/editor/DiffusionURIEditEngine.php
+++ b/src/applications/diffusion/editor/DiffusionURIEditEngine.php
@@ -54,11 +54,11 @@
   }
 
   protected function getObjectEditTitleText($object) {
-    return pht('Edit Repository URI: %s', $object->getDisplayURI());
+    return pht('Edit Repository URI %d', $object->getID());
   }
 
   protected function getObjectEditShortText($object) {
-    return $object->getDisplayURI();
+    return pht('URI %d', $object->getID());
   }
 
   protected function getObjectCreateShortText() {
@@ -70,8 +70,7 @@
   }
 
   protected function getObjectViewURI($object) {
-    $repository = $this->getRepository();
-    return $repository->getPathURI('manage/uris/');
+    return $object->getViewURI();
   }
 
   protected function buildCustomEditFields($object) {
@@ -87,6 +86,24 @@
         ->setConduitDescription(pht('Change the repository URI.'))
         ->setConduitTypeDescription(pht('New repository URI.'))
         ->setValue($object->getURI()),
+      id(new PhabricatorSelectEditField())
+        ->setKey('io')
+        ->setLabel(pht('I/O Type'))
+        ->setTransactionType(PhabricatorRepositoryURITransaction::TYPE_IO)
+        ->setDescription(pht('URI I/O behavior.'))
+        ->setConduitDescription(pht('Adjust I/O behavior.'))
+        ->setConduitTypeDescription(pht('New I/O behavior.'))
+        ->setValue($object->getIOType())
+        ->setOptions($object->getAvailableIOTypeOptions()),
+      id(new PhabricatorSelectEditField())
+        ->setKey('display')
+        ->setLabel(pht('Display Type'))
+        ->setTransactionType(PhabricatorRepositoryURITransaction::TYPE_DISPLAY)
+        ->setDescription(pht('URI display behavior.'))
+        ->setConduitDescription(pht('Change display behavior.'))
+        ->setConduitTypeDescription(pht('New display behavior.'))
+        ->setValue($object->getDisplayType())
+        ->setOptions($object->getAvailableDisplayTypeOptions()),
     );
   }
 
diff --git a/src/applications/diffusion/editor/DiffusionURIEditor.php b/src/applications/diffusion/editor/DiffusionURIEditor.php
--- a/src/applications/diffusion/editor/DiffusionURIEditor.php
+++ b/src/applications/diffusion/editor/DiffusionURIEditor.php
@@ -15,6 +15,8 @@
     $types = parent::getTransactionTypes();
 
     $types[] = PhabricatorRepositoryURITransaction::TYPE_URI;
+    $types[] = PhabricatorRepositoryURITransaction::TYPE_IO;
+    $types[] = PhabricatorRepositoryURITransaction::TYPE_DISPLAY;
 
     return $types;
   }
@@ -26,6 +28,10 @@
     switch ($xaction->getTransactionType()) {
       case PhabricatorRepositoryURITransaction::TYPE_URI:
         return $object->getURI();
+      case PhabricatorRepositoryURITransaction::TYPE_IO:
+        return $object->getIOType();
+      case PhabricatorRepositoryURITransaction::TYPE_DISPLAY:
+        return $object->getDisplayType();
     }
 
     return parent::getCustomTransactionOldValue($object, $xaction);
@@ -37,6 +43,8 @@
 
     switch ($xaction->getTransactionType()) {
       case PhabricatorRepositoryURITransaction::TYPE_URI:
+      case PhabricatorRepositoryURITransaction::TYPE_IO:
+      case PhabricatorRepositoryURITransaction::TYPE_DISPLAY:
         return $xaction->getNewValue();
     }
 
@@ -51,6 +59,12 @@
       case PhabricatorRepositoryURITransaction::TYPE_URI:
         $object->setURI($xaction->getNewValue());
         break;
+      case PhabricatorRepositoryURITransaction::TYPE_IO:
+        $object->setIOType($xaction->getNewValue());
+        break;
+      case PhabricatorRepositoryURITransaction::TYPE_DISPLAY:
+        $object->setDisplayType($xaction->getNewValue());
+        break;
     }
   }
 
@@ -60,6 +74,8 @@
 
     switch ($xaction->getTransactionType()) {
       case PhabricatorRepositoryURITransaction::TYPE_URI:
+      case PhabricatorRepositoryURITransaction::TYPE_IO:
+      case PhabricatorRepositoryURITransaction::TYPE_DISPLAY:
         return;
     }
 
@@ -91,6 +107,134 @@
           break;
         }
         break;
+      case PhabricatorRepositoryURITransaction::TYPE_IO:
+        $available = $object->getAvailableIOTypeOptions();
+        foreach ($xactions as $xaction) {
+          $new = $xaction->getNewValue();
+
+          if (empty($available[$new])) {
+            $errors[] = new PhabricatorApplicationTransactionValidationError(
+              $type,
+              pht('Invalid'),
+              pht(
+                'Value "%s" is not a valid display setting for this URI. '.
+                'Available types for this URI are: %s.',
+                implode(', ', array_keys($available))),
+              $xaction);
+            continue;
+          }
+
+          // If we are setting this URI to use "Observe", we must have no
+          // other "Observe" URIs and must also have no "Read/Write" URIs.
+
+          // If we are setting this URI to "Read/Write", we must have no
+          // other "Observe" URIs. It's OK to have other "Read/Write" URIs.
+
+          $no_observers = false;
+          $no_readwrite = false;
+          switch ($new) {
+            case PhabricatorRepositoryURI::IO_OBSERVE:
+              $no_readwrite = true;
+              $no_observers = true;
+              break;
+            case PhabricatorRepositoryURI::IO_READWRITE:
+              $no_observers = true;
+              break;
+          }
+
+          if ($no_observers || $no_readwrite) {
+            $repository = id(new PhabricatorRepositoryQuery())
+              ->setViewer(PhabricatorUser::getOmnipotentUser())
+              ->withPHIDs(array($object->getRepositoryPHID()))
+              ->needURIs(true)
+              ->executeOne();
+            $uris = $repository->getURIs();
+
+            $observe_conflict = null;
+            $readwrite_conflict = null;
+            foreach ($uris as $uri) {
+              // If this is the URI being edited, it can not conflict with
+              // itself.
+              if ($uri->getID() == $object->getID()) {
+                continue;
+              }
+
+              $io_type = $uri->getIoType();
+
+              if ($io_type == PhabricatorRepositoryURI::IO_READWRITE) {
+                if ($no_readwrite) {
+                  $readwite_conflict = $uri;
+                  break;
+                }
+              }
+
+              if ($io_type == PhabricatorRepositoryURI::IO_OBSERVE) {
+                if ($no_observers) {
+                  $observe_conflict = $uri;
+                  break;
+                }
+              }
+            }
+
+            if ($observe_conflict) {
+              if ($new == PhabricatorRepositoryURI::IO_OBSERVE) {
+                $message = pht(
+                  'You can not set this URI to use Observe IO because '.
+                  'another URI for this repository is already configured '.
+                  'in Observe IO mode. A repository can not observe two '.
+                  'different remotes simultaneously. Turn off IO for the '.
+                  'other URI first.');
+              } else {
+                $message = pht(
+                  'You can not set this URI to use Read/Write IO because '.
+                  'another URI for this repository is already configured '.
+                  'in Observe IO mode. An observed repository can not be '.
+                  'made writable. Turn off IO for the other URI first.');
+              }
+
+              $errors[] = new PhabricatorApplicationTransactionValidationError(
+                $type,
+                pht('Invalid'),
+                $message,
+                $xaction);
+              continue;
+            }
+
+            if ($readwrite_conflict) {
+              $message = pht(
+                'You can not set this URI to use Observe IO because '.
+                'another URI for this repository is already configured '.
+                'in Read/Write IO mode. A repository can not simultaneously '.
+                'be writable and observe a remote. Turn off IO for the '.
+                'other URI first.');
+
+              $errors[] = new PhabricatorApplicationTransactionValidationError(
+                $type,
+                pht('Invalid'),
+                $message,
+                $xaction);
+              continue;
+            }
+          }
+        }
+
+        break;
+      case PhabricatorRepositoryURITransaction::TYPE_DISPLAY:
+        $available = $object->getAvailableDisplayTypeOptions();
+        foreach ($xactions as $xaction) {
+          $new = $xaction->getNewValue();
+
+          if (empty($available[$new])) {
+            $errors[] = new PhabricatorApplicationTransactionValidationError(
+              $type,
+              pht('Invalid'),
+              pht(
+                'Value "%s" is not a valid display setting for this URI. '.
+                'Available types for this URI are: %s.',
+                implode(', ', array_keys($available))));
+          }
+        }
+        break;
     }
 
     return $errors;
diff --git a/src/applications/diffusion/management/DiffusionRepositoryURIsManagementPanel.php b/src/applications/diffusion/management/DiffusionRepositoryURIsManagementPanel.php
--- a/src/applications/diffusion/management/DiffusionRepositoryURIsManagementPanel.php
+++ b/src/applications/diffusion/management/DiffusionRepositoryURIsManagementPanel.php
@@ -26,7 +26,7 @@
       $uri_name = phutil_tag(
         'a',
         array(
-          'href' => $repository->getPathURI('uri/edit/'.$uri->getID().'/'),
+          'href' => $uri->getViewURI(),
         ),
         $uri_name);
 
@@ -38,48 +38,30 @@
 
       $uri_status = id(new PHUIIconView())->setIcon($status_icon);
 
-      switch ($uri->getEffectiveIOType()) {
-        case PhabricatorRepositoryURI::IO_OBSERVE:
-          $io_icon = 'fa-download green';
-          $io_label = pht('Observe');
-          break;
-        case PhabricatorRepositoryURI::IO_MIRROR:
-          $io_icon = 'fa-upload green';
-          $io_label = pht('Mirror');
-          break;
-        case PhabricatorRepositoryURI::IO_NONE:
-          $io_icon = 'fa-times grey';
-          $io_label = pht('No I/O');
-          break;
-        case PhabricatorRepositoryURI::IO_READ:
-          $io_icon = 'fa-folder blue';
-          $io_label = pht('Read Only');
-          break;
-        case PhabricatorRepositoryURI::IO_READWRITE:
-          $io_icon = 'fa-folder-open blue';
-          $io_label = pht('Read/Write');
-          break;
-      }
+      $io_type = $uri->getEffectiveIOType();
+      $io_map = PhabricatorRepositoryURI::getIOTypeMap();
+      $io_spec = idx($io_map, $io_type, array());
+
+      $io_icon = idx($io_spec, 'icon');
+      $io_color = idx($io_spec, 'color');
+      $io_label = idx($io_spec, 'label', $io_type);
 
       $uri_io = array(
-        id(new PHUIIconView())->setIcon($io_icon),
+        id(new PHUIIconView())->setIcon("{$io_icon} {$io_color}"),
         ' ',
         $io_label,
       );
 
-      switch ($uri->getEffectiveDisplayType()) {
-        case PhabricatorRepositoryURI::DISPLAY_NEVER:
-          $display_icon = 'fa-eye-slash grey';
-          $display_label = pht('Hidden');
-          break;
-        case PhabricatorRepositoryURI::DISPLAY_ALWAYS:
-          $display_icon = 'fa-eye green';
-          $display_label = pht('Visible');
-          break;
-      }
+      $display_type = $uri->getEffectiveDisplayType();
+      $display_map = PhabricatorRepositoryURI::getDisplayTypeMap();
+      $display_spec = idx($display_map, $display_type, array());
+
+      $display_icon = idx($display_spec, 'icon');
+      $display_color = idx($display_spec, 'color');
+      $display_label = idx($display_spec, 'label', $display_type);
 
       $uri_display = array(
-        id(new PHUIIconView())->setIcon($display_icon),
+        id(new PHUIIconView())->setIcon("{$display_icon} {$display_color}"),
         ' ',
         $display_label,
       );
diff --git a/src/applications/repository/query/PhabricatorRepositoryURITransactionQuery.php b/src/applications/repository/query/PhabricatorRepositoryURITransactionQuery.php
new file mode 100644
--- /dev/null
+++ b/src/applications/repository/query/PhabricatorRepositoryURITransactionQuery.php
@@ -0,0 +1,10 @@
+<?php
+
+final class PhabricatorRepositoryURITransactionQuery
+  extends PhabricatorApplicationTransactionQuery {
+
+  public function getTemplateApplicationTransaction() {
+    return new PhabricatorRepositoryURITransaction();
+  }
+
+}
diff --git a/src/applications/repository/storage/PhabricatorRepositoryURI.php b/src/applications/repository/storage/PhabricatorRepositoryURI.php
--- a/src/applications/repository/storage/PhabricatorRepositoryURI.php
+++ b/src/applications/repository/storage/PhabricatorRepositoryURI.php
@@ -94,6 +94,7 @@
       $this->getBuiltinProtocol(),
       $this->getBuiltinIdentifier(),
     );
+
     return implode('.', $parts);
   }
 
@@ -108,6 +109,10 @@
       return $display;
     }
 
+    return $this->getDefaultDisplayType();
+  }
+
+  public function getDefaultDisplayType() {
     switch ($this->getEffectiveIOType()) {
       case self::IO_MIRROR:
       case self::IO_OBSERVE:
@@ -156,6 +161,8 @@
 
         return self::DISPLAY_ALWAYS;
     }
+
+    return self::DISPLAY_NEVER;
   }
 
 
@@ -166,6 +173,10 @@
       return $io;
     }
 
+    return $this->getDefaultIOType();
+  }
+
+  public function getDefaultIOType() {
     if ($this->isBuiltin()) {
       $repository = $this->getRepository();
       $other_uris = $repository->getURIs();
@@ -307,6 +318,142 @@
     }
   }
 
+  public function getViewURI() {
+    $id = $this->getID();
+    return $this->getRepository()->getPathURI("uri/view/{$id}/");
+  }
+
+  public function getEditURI() {
+    $id = $this->getID();
+    return $this->getRepository()->getPathURI("uri/edit/{$id}/");
+  }
+
+  public function getAvailableIOTypeOptions() {
+    $options = array(
+      self::IO_DEFAULT,
+      self::IO_NONE,
+    );
+
+    if ($this->isBuiltin()) {
+      $options[] = self::IO_READ;
+      $options[] = self::IO_WRITE;
+    } else {
+      $options[] = self::IO_OBSERVE;
+      $options[] = self::IO_MIRROR;
+    }
+
+    $map = array();
+    $io_map = self::getIOTypeMap();
+    foreach ($options as $option) {
+      $spec = idx($io_map, $option, array());
+
+      $label = idx($spec, 'label', $option);
+      $short = idx($spec, 'short');
+
+      $name = pht('%s: %s', $label, $short);
+      $map[$option] = $name;
+    }
+
+    return $map;
+  }
+
+  public function getAvailableDisplayTypeOptions() {
+    $options = array(
+      self::DISPLAY_DEFAULT,
+      self::DISPLAY_ALWAYS,
+      self::DISPLAY_NEVER,
+    );
+
+    $map = array();
+    $display_map = self::getDisplayTypeMap();
+    foreach ($options as $option) {
+      $spec = idx($display_map, $option, array());
+
+      $label = idx($spec, 'label', $option);
+      $short = idx($spec, 'short');
+
+      $name = pht('%s: %s', $label, $short);
+      $map[$option] = $name;
+    }
+
+    return $map;
+  }
+
+  public static function getIOTypeMap() {
+    return array(
+      self::IO_DEFAULT => array(
+        'label' => pht('Default'),
+        'short' => pht('Use default behavior.'),
+      ),
+      self::IO_OBSERVE => array(
+        'icon' => 'fa-download',
+        'color' => 'green',
+        'label' => pht('Observe'),
+        'note' => pht(
+          'Phabricator will observe changes to this URI and copy them.'),
+        'short' => pht('Copy from a remote.'),
+      ),
+      self::IO_MIRROR => array(
+        'icon' => 'fa-upload',
+        'color' => 'green',
+        'label' => pht('Mirror'),
+        'note' => pht(
+          'Phabricator will push a copy of any changes to this URI.'),
+        'short' => pht('Push a copy to a remote.'),
+      ),
+      self::IO_NONE => array(
+        'icon' => 'fa-times',
+        'color' => 'grey',
+        'label' => pht('No I/O'),
+        'note' => pht(
+          'Phabricator will not push or pull any changes to this URI.'),
+        'short' => pht('Do not perform any I/O.'),
+      ),
+      self::IO_READ => array(
+        'icon' => 'fa-folder',
+        'color' => 'blue',
+        'label' => pht('Read Only'),
+        'note' => pht(
+          'Phabricator will serve a read-only copy of the repository from '.
+          'this URI.'),
+        'short' => pht('Serve repository in read-only mode.'),
+      ),
+      self::IO_READWRITE => array(
+        'icon' => 'fa-folder-open',
+        'color' => 'blue',
+        'label' => pht('Read/Write'),
+        'note' => pht(
+          'Phabricator will serve a read/write copy of the repository from '.
+          'this URI.'),
+        'short' => pht('Serve repository in read/write mode.'),
+      ),
+    );
+  }
+
+  public static function getDisplayTypeMap() {
+    return array(
+      self::DISPLAY_DEFAULT => array(
+        'label' => pht('Default'),
+        'short' => pht('Use default behavior.'),
+      ),
+      self::DISPLAY_ALWAYS => array(
+        'icon' => 'fa-eye',
+        'color' => 'green',
+        'label' => pht('Visible'),
+        'note' => pht('This URI will be shown to users as a clone URI.'),
+        'short' => pht('Show as a clone URI.'),
+      ),
+      self::DISPLAY_NEVER => array(
+        'icon' => 'fa-eye-slash',
+        'color' => 'grey',
+        'label' => pht('Hidden'),
+        'note' => pht(
+          'This URI will be hidden from users.'),
+        'short' => pht('Do not show as a clone URI.'),
+      ),
+    );
+  }
+
 
 /* -(  PhabricatorApplicationTransactionInterface  )------------------------- */
 
diff --git a/src/applications/repository/storage/PhabricatorRepositoryURITransaction.php b/src/applications/repository/storage/PhabricatorRepositoryURITransaction.php
--- a/src/applications/repository/storage/PhabricatorRepositoryURITransaction.php
+++ b/src/applications/repository/storage/PhabricatorRepositoryURITransaction.php
@@ -4,6 +4,8 @@
   extends PhabricatorApplicationTransaction {
 
   const TYPE_URI = 'diffusion.uri.uri';
+  const TYPE_IO = 'diffusion.uri.io';
+  const TYPE_DISPLAY = 'diffusion.uri.display';
 
   public function getApplicationName() {
     return 'repository';
@@ -13,8 +15,43 @@
     return PhabricatorRepositoryURIPHIDType::TYPECONST;
   }
 
-  public function getApplicationTransactionCommentObject() {
-    return null;
+  public function getTitle() {
+    $author_phid = $this->getAuthorPHID();
+
+    $old = $this->getOldValue();
+    $new = $this->getNewValue();
+
+    switch ($this->getTransactionType()) {
+      case self::TYPE_URI:
+        return pht(
+          '%s changed this URI from "%s" to "%s".',
+          $this->renderHandleLink($author_phid),
+          $old,
+          $new);
+      case self::TYPE_IO:
+        $map = PhabricatorRepositoryURI::getIOTypeMap();
+        $old_label = idx(idx($map, $old, array()), 'label', $old);
+        $new_label = idx(idx($map, $new, array()), 'label', $new);
+
+        return pht(
+          '%s changed the display type for this URI from "%s" to "%s".',
+          $this->renderHandleLink($author_phid),
+          $old_label,
+          $new_label);
+      case self::TYPE_DISPLAY:
+        $map = PhabricatorRepositoryURI::getDisplayTypeMap();
+        $old_label = idx(idx($map, $old, array()), 'label', $old);
+        $new_label = idx(idx($map, $new, array()), 'label', $new);
+
+        return pht(
+          '%s changed the display type for this URI from "%s" to "%s".',
+          $this->renderHandleLink($author_phid),
+          $old_label,
+          $new_label);
+
+    }
+
+    return parent::getTitle();
   }
 
 }