diff --git a/database/seeders/AltumCodeVendorSeeder.php b/database/seeders/AltumCodeVendorSeeder.php
new file mode 100644
index 0000000..0e63f75
--- /dev/null
+++ b/database/seeders/AltumCodeVendorSeeder.php
@@ -0,0 +1,211 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Core\Mod\Uptelligence\Database\Seeders;
+
+use Core\Mod\Uptelligence\Models\Vendor;
+use Illuminate\Database\Seeder;
+
+/**
+ * Seeds the uptelligence_vendors table with AltumCode products and plugins.
+ *
+ * Idempotent: uses updateOrCreate so it can be run multiple times safely.
+ */
+class AltumCodeVendorSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        foreach ($this->products() as $product) {
+            Vendor::updateOrCreate(
+                ['slug' => $product['slug']],
+                $product,
+            );
+        }
+
+        foreach ($this->plugins() as $plugin) {
+            Vendor::updateOrCreate(
+                ['slug' => $plugin['slug']],
+                $plugin,
+            );
+        }
+    }
+
+    /**
+     * AltumCode licensed products.
+     *
+     * @return array<int, array<string, mixed>>
+     */
+    protected function products(): array
+    {
+        return [
+            [
+                'slug' => '66analytics',
+                'name' => '66analytics',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_LICENSED,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => '66biolinks',
+                'name' => '66biolinks',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_LICENSED,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => '66pusher',
+                'name' => '66pusher',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_LICENSED,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => '66socialproof',
+                'name' => '66socialproof',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_LICENSED,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+        ];
+    }
+
+    /**
+     * AltumCode plugins.
+     *
+     * @return array<int, array<string, mixed>>
+     */
+    protected function plugins(): array
+    {
+        return [
+            [
+                'slug' => 'altum-plugin-affiliate',
+                'name' => 'Affiliate Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-push-notifications',
+                'name' => 'Push Notifications Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-teams',
+                'name' => 'Teams Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-pwa',
+                'name' => 'PWA Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-image-optimizer',
+                'name' => 'Image Optimizer Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-email-shield',
+                'name' => 'Email Shield Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-dynamic-og-images',
+                'name' => 'Dynamic OG Images Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-offload',
+                'name' => 'Offload & CDN Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-payment-blocks',
+                'name' => 'Payment Blocks Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-ultimate-blocks',
+                'name' => 'Ultimate Blocks Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-pro-blocks',
+                'name' => 'Pro Blocks Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-pro-notifications',
+                'name' => 'Pro Notifications Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+            [
+                'slug' => 'altum-plugin-aix',
+                'name' => 'AIX Plugin',
+                'vendor_name' => 'AltumCode',
+                'source_type' => Vendor::SOURCE_PLUGIN,
+                'plugin_platform' => Vendor::PLATFORM_ALTUM,
+                'current_version' => '0.0.0',
+                'is_active' => true,
+            ],
+        ];
+    }
+}
diff --git a/tests/Pest.php b/tests/Pest.php
index 7f6d8cf..bb36909 100644
--- a/tests/Pest.php
+++ b/tests/Pest.php
@@ -2,6 +2,6 @@
 
 declare(strict_types=1);
 
-use Orchestra\Testbench\TestCase;
+use Tests\TestCase;
 
 uses(TestCase::class)->in('Feature', 'Unit');
diff --git a/tests/Unit/AltumCodeVendorSeederTest.php b/tests/Unit/AltumCodeVendorSeederTest.php
new file mode 100644
index 0000000..da1f9e9
--- /dev/null
+++ b/tests/Unit/AltumCodeVendorSeederTest.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+use Core\Mod\Uptelligence\Database\Seeders\AltumCodeVendorSeeder;
+use Core\Mod\Uptelligence\Models\Vendor;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+uses(RefreshDatabase::class);
+
+it('seeds 4 altum products', function () {
+    $seeder = new AltumCodeVendorSeeder;
+    $seeder->run();
+
+    $products = Vendor::where('source_type', Vendor::SOURCE_LICENSED)
+        ->where('plugin_platform', Vendor::PLATFORM_ALTUM)
+        ->get();
+
+    expect($products)->toHaveCount(4)
+        ->and($products->pluck('slug')->sort()->values()->all())->toBe([
+            '66analytics',
+            '66biolinks',
+            '66pusher',
+            '66socialproof',
+        ]);
+
+    $products->each(function (Vendor $vendor) {
+        expect($vendor->vendor_name)->toBe('AltumCode')
+            ->and($vendor->is_active)->toBeTrue()
+            ->and($vendor->current_version)->toBe('0.0.0');
+    });
+});
+
+it('seeds 13 altum plugins', function () {
+    $seeder = new AltumCodeVendorSeeder;
+    $seeder->run();
+
+    $plugins = Vendor::where('source_type', Vendor::SOURCE_PLUGIN)
+        ->where('plugin_platform', Vendor::PLATFORM_ALTUM)
+        ->get();
+
+    expect($plugins)->toHaveCount(13);
+
+    $plugins->each(function (Vendor $vendor) {
+        expect($vendor->vendor_name)->toBe('AltumCode')
+            ->and($vendor->is_active)->toBeTrue()
+            ->and($vendor->current_version)->toBe('0.0.0')
+            ->and($vendor->slug)->toStartWith('altum-plugin-');
+    });
+});
+
+it('is idempotent — running twice still yields 17 total', function () {
+    $seeder = new AltumCodeVendorSeeder;
+
+    $seeder->run();
+    expect(Vendor::count())->toBe(17);
+
+    $seeder->run();
+    expect(Vendor::count())->toBe(17);
+});