diff --git a/app/Bus/Commands/Component/CreateComponentCommand.php b/app/Bus/Commands/Component/CreateComponentCommand.php
index d2305fa9..56aa6a7a 100644
--- a/app/Bus/Commands/Component/CreateComponentCommand.php
+++ b/app/Bus/Commands/Component/CreateComponentCommand.php
@@ -70,7 +70,7 @@ final class CreateComponentCommand
     /**
      * JSON meta data for the component.
      *
-     * @var string|null
+     * @var array|null
      */
     public $meta;
 
@@ -87,7 +87,7 @@ final class CreateComponentCommand
         'order'       => 'nullable|int',
         'group_id'    => 'nullable|int',
         'enabled'     => 'nullable|bool',
-        'meta'        => 'nullable|string',
+        'meta'        => 'nullable|array',
     ];
 
     /**
@@ -100,7 +100,7 @@ final class CreateComponentCommand
      * @param int         $order
      * @param int         $group_id
      * @param bool        $enabled
-     * @param string|null $meta
+     * @param array|null  $meta
      *
      * @return void
      */
diff --git a/app/Bus/Commands/Component/UpdateComponentCommand.php b/app/Bus/Commands/Component/UpdateComponentCommand.php
index d5b1b01a..52503094 100644
--- a/app/Bus/Commands/Component/UpdateComponentCommand.php
+++ b/app/Bus/Commands/Component/UpdateComponentCommand.php
@@ -74,7 +74,7 @@ final class UpdateComponentCommand
     /**
      * JSON meta data for the component.
      *
-     * @var string|null
+     * @var array|null
      */
     public $meta;
 
@@ -98,7 +98,7 @@ final class UpdateComponentCommand
         'order'       => 'nullable|int',
         'group_id'    => 'nullable|int',
         'enabled'     => 'nullable|bool',
-        'meta'        => 'nullable|string',
+        'meta'        => 'nullable|array',
         'silent'      => 'nullable|bool',
     ];
 
@@ -113,7 +113,7 @@ final class UpdateComponentCommand
      * @param int                               $order
      * @param int                               $group_id
      * @param bool                              $enabled
-     * @param string|null                       $meta
+     * @param array|null                        $meta
      * @param bool                              $silent
      *
      * @return void
diff --git a/app/Bus/Commands/Incident/CreateIncidentCommand.php b/app/Bus/Commands/Incident/CreateIncidentCommand.php
index 5ed21694..dde666b7 100644
--- a/app/Bus/Commands/Incident/CreateIncidentCommand.php
+++ b/app/Bus/Commands/Incident/CreateIncidentCommand.php
@@ -111,7 +111,7 @@ final class CreateIncidentCommand
     public $rules = [
         'name'             => 'required|string',
         'status'           => 'required|int|min:0|max:4',
-        'message'          => 'required|string',
+        'message'          => 'nullable|string',
         'visible'          => 'nullable|bool',
         'component_id'     => 'nullable|required_with:component_status|int',
         'component_status' => 'nullable|required_with:component_id|int|min:0|max:4',
@@ -119,7 +119,7 @@ final class CreateIncidentCommand
         'stickied'         => 'required|bool',
         'occurred_at'      => 'nullable|string',
         'template'         => 'nullable|string',
-        'meta'             => 'required|array',
+        'meta'             => 'nullable|array',
     ];
 
     /**
diff --git a/app/Bus/Commands/Metric/CreateMetricPointCommand.php b/app/Bus/Commands/Metric/CreateMetricPointCommand.php
index a6b7e0a1..8f33f4a4 100644
--- a/app/Bus/Commands/Metric/CreateMetricPointCommand.php
+++ b/app/Bus/Commands/Metric/CreateMetricPointCommand.php
@@ -38,7 +38,7 @@ final class CreateMetricPointCommand
     /**
      * The metric point created at.
      *
-     * @var string
+     * @var int
      */
     public $created_at;
 
@@ -49,7 +49,7 @@ final class CreateMetricPointCommand
      */
     public $rules = [
         'value'      => 'required|numeric',
-        'created_at' => 'required|string',
+        'created_at' => 'nullable|int',
     ];
 
     /**
@@ -57,7 +57,7 @@ final class CreateMetricPointCommand
      *
      * @param \CachetHQ\Cachet\Models\Metric $metric
      * @param int                            $value
-     * @param string                         $created_at
+     * @param int                         $created_at
      *
      * @return void
      */
diff --git a/app/Bus/Commands/Metric/UpdateMetricCommand.php b/app/Bus/Commands/Metric/UpdateMetricCommand.php
index 9ef77011..aa713408 100644
--- a/app/Bus/Commands/Metric/UpdateMetricCommand.php
+++ b/app/Bus/Commands/Metric/UpdateMetricCommand.php
@@ -116,7 +116,7 @@ final class UpdateMetricCommand
         'default_view'  => 'nullable|numeric|between:0,4',
         'threshold'     => 'nullable|int',
         'order'         => 'nullable|int',
-        'visible'       => 'required|int|between:0,2',
+        'visible'       => 'nullable|int|between:0,2',
     ];
 
     /**
diff --git a/app/Bus/Commands/Schedule/CreateScheduleCommand.php b/app/Bus/Commands/Schedule/CreateScheduleCommand.php
index 4268e68d..ebeec0d8 100644
--- a/app/Bus/Commands/Schedule/CreateScheduleCommand.php
+++ b/app/Bus/Commands/Schedule/CreateScheduleCommand.php
@@ -71,7 +71,7 @@ final class CreateScheduleCommand
         'status'       => 'required|int|min:0|max:2',
         'scheduled_at' => 'required|string',
         'completed_at' => 'nullable|string',
-        'components'   => 'required|array',
+        'components'   => 'nullable|array',
     ];
 
     /**
@@ -86,7 +86,7 @@ final class CreateScheduleCommand
      *
      * @return void
      */
-    public function __construct($name, $message, $status, $scheduled_at, $completed_at, array $components)
+    public function __construct($name, $message, $status, $scheduled_at, $completed_at, array $components = [])
     {
         $this->name = $name;
         $this->message = $message;
diff --git a/app/Foundation/Providers/AppServiceProvider.php b/app/Foundation/Providers/AppServiceProvider.php
index 08cbe5bd..c652b039 100644
--- a/app/Foundation/Providers/AppServiceProvider.php
+++ b/app/Foundation/Providers/AppServiceProvider.php
@@ -12,6 +12,7 @@
 namespace CachetHQ\Cachet\Foundation\Providers;
 
 use AltThree\Bus\Dispatcher;
+use AltThree\Validator\ValidatingMiddleware;
 use CachetHQ\Cachet\Bus\Middleware\UseDatabaseTransactions;
 use CachetHQ\Cachet\Services\Dates\DateFactory;
 use Illuminate\Database\Eloquent\Relations\Relation;
@@ -41,7 +42,7 @@ class AppServiceProvider extends ServiceProvider
             return Dispatcher::simpleMapping($command, 'CachetHQ\Cachet\Bus', 'CachetHQ\Cachet\Bus\Handlers');
         });
 
-        $dispatcher->pipeThrough([UseDatabaseTransactions::class]);
+        $dispatcher->pipeThrough([UseDatabaseTransactions::class, ValidatingMiddleware::class]);
 
         Str::macro('canonicalize', function ($url) {
             return preg_replace('/([^\/])$/', '$1/', $url);
diff --git a/tests/Api/MetricPointTest.php b/tests/Api/MetricPointTest.php
index 7e12c9f7..c2a88f42 100644
--- a/tests/Api/MetricPointTest.php
+++ b/tests/Api/MetricPointTest.php
@@ -70,7 +70,6 @@ class MetricPointTest extends AbstractApiTestCase
 
         $metric = factory('CachetHQ\Cachet\Models\Metric')->create();
         $timestamp = 1434369116;
-        $datetime = '2015-06-15 11:51:56';
         $metricPoint = factory('CachetHQ\Cachet\Models\MetricPoint')->make([
             'metric_id' => $metric->id,
         ]);
@@ -79,7 +78,10 @@ class MetricPointTest extends AbstractApiTestCase
 
         $this->post("/api/v1/metrics/{$metric->id}/points", $postData);
 
-        $this->seeJsonContains(['value' => $metricPoint->value, 'created_at' => $datetime]);
+        $this->seeJsonContains([
+            'value'      => $metricPoint->value,
+            'created_at' => date('Y-m-d H:i:s', 1434369116),
+        ]);
 
         $this->assertResponseOk();
     }