diff --git a/src/applications/differential/conduit/DifferentialCreateDiffConduitAPIMethod.php b/src/applications/differential/conduit/DifferentialCreateDiffConduitAPIMethod.php
--- a/src/applications/differential/conduit/DifferentialCreateDiffConduitAPIMethod.php
+++ b/src/applications/differential/conduit/DifferentialCreateDiffConduitAPIMethod.php
@@ -160,7 +160,8 @@
 
     return array(
       'diffid' => $diff->getID(),
-      'uri'    => $uri,
+      'phid' => $diff->getPHID(),
+      'uri' => $uri,
     );
   }
 
diff --git a/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php b/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php
--- a/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php
+++ b/src/applications/harbormaster/conduit/HarbormasterSendMessageConduitAPIMethod.php
@@ -18,7 +18,9 @@
 
     return array(
       'buildTargetPHID' => 'required phid',
-      'type'            => 'required '.$type_const,
+      'lint' => 'optional list<wild>',
+      'unit' => 'optional list<wild>',
+      'type' => 'required '.$type_const,
     );
   }
 
@@ -40,10 +42,31 @@
       throw new Exception(pht('No such build target!'));
     }
 
-    $message = HarbormasterBuildMessage::initializeNewMessage($viewer)
+    $save = array();
+
+    $lint_messages = $request->getValue('lint', array());
+    foreach ($lint_messages as $lint) {
+      $save[] = HarbormasterBuildLintMessage::newFromDictionary(
+        $build_target,
+        $lint);
+    }
+
+    $unit_messages = $request->getValue('unit', array());
+    foreach ($unit_messages as $unit) {
+      $save[] = HarbormasterBuildUnitMessage::newFromDictionary(
+        $build_target,
+        $unit);
+    }
+
+    $save[] = HarbormasterBuildMessage::initializeNewMessage($viewer)
       ->setBuildTargetPHID($build_target->getPHID())
-      ->setType($message_type)
-      ->save();
+      ->setType($message_type);
+
+    $build_target->openTransaction();
+    foreach ($save as $object) {
+      $object->save();
+    }
+    $build_target->saveTransaction();
 
     // If the build has completely paused because all steps are blocked on
     // waiting targets, this will resume it.
diff --git a/src/applications/harbormaster/controller/HarbormasterBuildableViewController.php b/src/applications/harbormaster/controller/HarbormasterBuildableViewController.php
--- a/src/applications/harbormaster/controller/HarbormasterBuildableViewController.php
+++ b/src/applications/harbormaster/controller/HarbormasterBuildableViewController.php
@@ -248,7 +248,13 @@
       $build_list->addItem($item);
     }
 
-    return $build_list;
+    $build_list->setFlush(true);
+
+    $box = id(new PHUIObjectBoxView())
+      ->setHeaderText(pht('Builds'))
+      ->appendChild($build_list);
+
+    return $box;
   }
 
 }