diff --git a/src/Core/Console/Boot.php b/src/Core/Console/Boot.php
index 7e7090c..05de287 100644
--- a/src/Core/Console/Boot.php
+++ b/src/Core/Console/Boot.php
@@ -30,5 +30,6 @@ class Boot
         $event->command(Commands\MakePlugCommand::class);
         $event->command(Commands\MakeWebsiteCommand::class);
         $event->command(Commands\PruneEmailShieldStatsCommand::class);
+        $event->command(Commands\ScheduleSyncCommand::class);
     }
 }
diff --git a/src/Core/Console/Commands/ScheduleSyncCommand.php b/src/Core/Console/Commands/ScheduleSyncCommand.php
new file mode 100644
index 0000000..1cbce72
--- /dev/null
+++ b/src/Core/Console/Commands/ScheduleSyncCommand.php
@@ -0,0 +1,90 @@
+<?php
+
+/*
+ * Core PHP Framework
+ *
+ * Licensed under the European Union Public Licence (EUPL) v1.2.
+ * See LICENSE file for details.
+ */
+
+declare(strict_types=1);
+
+namespace Core\Console\Commands;
+
+use Core\Actions\ScheduledAction;
+use Core\Actions\ScheduledActionScanner;
+use Illuminate\Console\Command;
+
+/**
+ * Sync #[Scheduled] attribute declarations to the database.
+ *
+ * Scans configured paths for Action classes with the #[Scheduled] attribute
+ * and upserts them into the scheduled_actions table. Run during deploy/migration.
+ */
+class ScheduleSyncCommand extends Command
+{
+    protected $signature = 'schedule:sync';
+
+    protected $description = 'Sync #[Scheduled] action attributes to the database';
+
+    public function handle(ScheduledActionScanner $scanner): int
+    {
+        $paths = config('core.scheduled_action_paths');
+
+        if ($paths === null) {
+            $paths = [
+                app_path('Core'),
+                app_path('Mod'),
+                app_path('Website'),
+            ];
+
+            // Also scan framework paths
+            $frameworkSrc = dirname(__DIR__, 3);
+            $paths[] = $frameworkSrc.'/Core';
+            $paths[] = $frameworkSrc.'/Mod';
+        }
+
+        $discovered = $scanner->scan($paths);
+
+        $added = 0;
+        $disabled = 0;
+        $unchanged = 0;
+
+        // Upsert discovered actions
+        foreach ($discovered as $class => $attribute) {
+            $existing = ScheduledAction::where('action_class', $class)->first();
+
+            if ($existing) {
+                $unchanged++;
+
+                continue;
+            }
+
+            ScheduledAction::create([
+                'action_class' => $class,
+                'frequency' => $attribute->frequency,
+                'timezone' => $attribute->timezone,
+                'without_overlapping' => $attribute->withoutOverlapping,
+                'run_in_background' => $attribute->runInBackground,
+                'is_enabled' => true,
+            ]);
+
+            $added++;
+        }
+
+        // Disable actions no longer in codebase
+        $discoveredClasses = array_keys($discovered);
+        $stale = ScheduledAction::where('is_enabled', true)
+            ->whereNotIn('action_class', $discoveredClasses)
+            ->get();
+
+        foreach ($stale as $action) {
+            $action->update(['is_enabled' => false]);
+            $disabled++;
+        }
+
+        $this->info("Schedule sync complete: {$added} added, {$disabled} disabled, {$unchanged} unchanged.");
+
+        return Command::SUCCESS;
+    }
+}
diff --git a/tests/Feature/ScheduleSyncCommandTest.php b/tests/Feature/ScheduleSyncCommandTest.php
new file mode 100644
index 0000000..8200310
--- /dev/null
+++ b/tests/Feature/ScheduleSyncCommandTest.php
@@ -0,0 +1,111 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Core\Tests\Feature;
+
+use Core\Actions\ScheduledAction;
+use Core\Console\Commands\ScheduleSyncCommand;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Orchestra\Testbench\TestCase;
+
+class ScheduleSyncCommandTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function defineDatabaseMigrations(): void
+    {
+        $this->loadMigrationsFrom(__DIR__.'/../../database/migrations');
+    }
+
+    protected function defineEnvironment($app): void
+    {
+        $app['config']->set('database.default', 'testing');
+        $app['config']->set('database.connections.testing', [
+            'driver' => 'sqlite',
+            'database' => ':memory:',
+        ]);
+
+        // Point scanner at test fixtures only
+        $app['config']->set('core.scheduled_action_paths', [
+            __DIR__.'/../Fixtures/Mod/Scheduled',
+        ]);
+    }
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->app->make(\Illuminate\Contracts\Console\Kernel::class)->registerCommand(
+            $this->app->make(ScheduleSyncCommand::class)
+        );
+    }
+
+    public function test_sync_inserts_new_scheduled_actions(): void
+    {
+        $this->artisan('schedule:sync')
+            ->assertSuccessful();
+
+        $this->assertDatabaseHas('scheduled_actions', [
+            'action_class' => 'Core\\Tests\\Fixtures\\Mod\\Scheduled\\Actions\\EveryMinuteAction',
+            'frequency' => 'everyMinute',
+            'is_enabled' => true,
+        ]);
+
+        $this->assertDatabaseHas('scheduled_actions', [
+            'action_class' => 'Core\\Tests\\Fixtures\\Mod\\Scheduled\\Actions\\DailyAction',
+            'frequency' => 'dailyAt:09:00',
+            'timezone' => 'Europe/London',
+        ]);
+    }
+
+    public function test_sync_disables_removed_actions(): void
+    {
+        // Pre-populate with an action that no longer exists
+        ScheduledAction::create([
+            'action_class' => 'App\\Actions\\RemovedAction',
+            'frequency' => 'hourly',
+            'is_enabled' => true,
+        ]);
+
+        $this->artisan('schedule:sync')
+            ->assertSuccessful();
+
+        $this->assertDatabaseHas('scheduled_actions', [
+            'action_class' => 'App\\Actions\\RemovedAction',
+            'is_enabled' => false,
+        ]);
+    }
+
+    public function test_sync_preserves_manually_edited_frequency(): void
+    {
+        // Pre-populate with a manually edited action
+        ScheduledAction::create([
+            'action_class' => 'Core\\Tests\\Fixtures\\Mod\\Scheduled\\Actions\\EveryMinuteAction',
+            'frequency' => 'hourly', // Manually changed from everyMinute
+            'is_enabled' => true,
+        ]);
+
+        $this->artisan('schedule:sync')
+            ->assertSuccessful();
+
+        // Should preserve the manual edit
+        $this->assertDatabaseHas('scheduled_actions', [
+            'action_class' => 'Core\\Tests\\Fixtures\\Mod\\Scheduled\\Actions\\EveryMinuteAction',
+            'frequency' => 'hourly',
+        ]);
+    }
+
+    public function test_sync_is_idempotent(): void
+    {
+        $this->artisan('schedule:sync')->assertSuccessful();
+        $this->artisan('schedule:sync')->assertSuccessful();
+
+        $count = ScheduledAction::where(
+            'action_class',
+            'Core\\Tests\\Fixtures\\Mod\\Scheduled\\Actions\\EveryMinuteAction'
+        )->count();
+
+        $this->assertSame(1, $count);
+    }
+}