diff --git a/app/Livewire/Health/Index.php b/app/Livewire/Health/Index.php
new file mode 100644
index 0000000..7673956
--- /dev/null
+++ b/app/Livewire/Health/Index.php
@@ -0,0 +1,158 @@
+<?php
+
+namespace App\Livewire\Health;
+
+use App\Models\AuditEvent;
+use App\Models\HealthCheck;
+use App\Services\HealthService;
+use App\Support\Confirm\ConfirmToken;
+use App\Support\Confirm\InvalidConfirmToken;
+use Illuminate\Contracts\View\View;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Validation\Rule;
+use Livewire\Attributes\Layout;
+use Livewire\Attributes\On;
+use Livewire\Component;
+use Throwable;
+
+/**
+ * Uptime / health status board. `operate`-gated (route + mount + per-method). Probes run NATIVELY
+ * (HealthService — Laravel HTTP client / a PHP TCP stream, no SSH/shell). The lazy scan is
+ * per-check guarded. Deleting a check goes through a signed ConfirmToken + R5 modal.
+ */
+#[Layout('layouts.app')]
+class Index extends Component
+{
+    // Add-check form
+    public string $label = '';
+
+    public string $type = 'http';
+
+    public string $target = '';
+
+    public ?int $port = null;
+
+    /** @var array<string, array{ok:bool, latency:?int, detail:string}> check uuid → probe result */
+    public array $results = [];
+
+    public bool $ready = false;
+
+    public function mount(): void
+    {
+        abort_unless(Auth::user()?->can('operate'), 403);
+    }
+
+    public function title(): string
+    {
+        return __('health.title');
+    }
+
+    private function gate(): void
+    {
+        abort_unless(Auth::user()?->can('operate'), 403);
+    }
+
+    private function audit(string $action, string $target): void
+    {
+        AuditEvent::create([
+            'user_id' => Auth::id(),
+            'actor' => Auth::user()?->name ?? 'system',
+            'action' => $action,
+            'target' => $target,
+            'ip' => request()->ip(),
+        ]);
+    }
+
+    public function scan(HealthService $health): void
+    {
+        $this->gate();
+        $this->results = [];
+
+        foreach (HealthCheck::orderBy('label')->orderBy('target')->get() as $check) {
+            try {
+                $this->results[$check->uuid] = $health->probe($check);
+            } catch (Throwable $e) {
+                $this->results[$check->uuid] = ['ok' => false, 'latency' => null, 'detail' => $e->getMessage()];
+            }
+        }
+
+        $this->ready = true;
+    }
+
+    public function addCheck(): void
+    {
+        $this->gate();
+
+        // HTTP → a real http(s) URL; TCP → a hostname/IP + a port. Neither is ever shelled.
+        $rules = [
+            'label' => ['nullable', 'string', 'max:60'],
+            'type' => ['required', Rule::in(HealthCheck::TYPES)],
+        ];
+        if ($this->type === 'tcp') {
+            $rules['target'] = ['required', 'string', 'max:253', 'regex:/^[A-Za-z0-9]([A-Za-z0-9.\-]*[A-Za-z0-9])?$/'];
+            $rules['port'] = ['required', 'integer', 'min:1', 'max:65535'];
+        } else {
+            $rules['target'] = ['required', 'url:http,https', 'max:2048'];
+            $rules['port'] = ['nullable'];
+        }
+
+        $data = $this->validate($rules);
+
+        HealthCheck::create([
+            'label' => $data['label'] ?? null,
+            'type' => $data['type'],
+            'target' => $data['target'],
+            'port' => $this->type === 'tcp' ? $data['port'] : null,
+        ]);
+
+        $this->audit('health.check_add', $data['target']);
+        $this->reset('label', 'target', 'port');
+        $this->type = 'http';
+        $this->dispatch('notify', message: __('health.added'));
+    }
+
+    public function confirmDeleteCheck(string $uuid): void
+    {
+        $this->gate();
+        $check = HealthCheck::where('uuid', $uuid)->firstOrFail();
+
+        $this->dispatch('openModal',
+            component: 'modals.confirm-action',
+            arguments: [
+                'heading' => __('health.delete_heading'),
+                'body' => __('health.delete_body', ['target' => $check->target]),
+                'confirmLabel' => __('common.delete'),
+                'danger' => true,
+                'icon' => 'trash',
+                'notify' => __('health.deleted'),
+                'token' => ConfirmToken::issue('healthCheckDeleted', ['uuid' => $check->uuid], 'health.check_delete', $check->target, null),
+            ],
+        );
+    }
+
+    #[On('healthCheckDeleted')]
+    public function deleteCheck(string $confirmToken): void
+    {
+        $this->gate();
+
+        try {
+            $payload = ConfirmToken::consume($confirmToken, 'healthCheckDeleted');
+        } catch (InvalidConfirmToken) {
+            return;
+        }
+
+        HealthCheck::where('uuid', $payload['params']['uuid'])->first()?->delete();
+    }
+
+    public function render(): View
+    {
+        $checks = HealthCheck::orderBy('label')->orderBy('target')->get();
+        $up = count(array_filter($this->results, fn ($r) => $r['ok'] ?? false));
+
+        return view('livewire.health.index', [
+            'checks' => $checks,
+            'up' => $up,
+            'total' => count($this->results),
+        ])->title($this->title());
+    }
+}
diff --git a/app/Models/HealthCheck.php b/app/Models/HealthCheck.php
new file mode 100644
index 0000000..42916d8
--- /dev/null
+++ b/app/Models/HealthCheck.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Str;
+
+/** An uptime probe: an HTTP URL or a TCP host:port whose reachability Clusev monitors. */
+class HealthCheck extends Model
+{
+    protected $guarded = [];
+
+    protected $casts = ['port' => 'integer'];
+
+    public const TYPES = ['http', 'tcp'];
+
+    protected static function booted(): void
+    {
+        static::creating(fn (self $c) => $c->uuid ??= (string) Str::uuid());
+    }
+
+    public function getRouteKeyName(): string
+    {
+        return 'uuid';
+    }
+}
diff --git a/app/Services/HealthService.php b/app/Services/HealthService.php
new file mode 100644
index 0000000..1645329
--- /dev/null
+++ b/app/Services/HealthService.php
@@ -0,0 +1,66 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\HealthCheck;
+use Illuminate\Support\Facades\Http;
+use Throwable;
+
+/**
+ * Runs an uptime probe NATIVELY (Laravel HTTP client / a PHP TCP stream) — no SSH, no shell, so the
+ * target is never interpolated into a command. An HTTP probe reports only up/down + status code +
+ * latency (never the response body), so it can't exfiltrate an internal endpoint's content. Redirects
+ * are disabled so a 30x can't bounce the probe to an unseen target.
+ */
+class HealthService
+{
+    /**
+     * @return array{ok:bool, latency:?int, detail:string}
+     */
+    public function probe(HealthCheck $check, int $timeout = 5): array
+    {
+        return $check->type === 'tcp'
+            ? $this->tcp((string) $check->target, (int) $check->port, $timeout)
+            : $this->http((string) $check->target, $timeout);
+    }
+
+    private function http(string $url, int $timeout): array
+    {
+        $start = microtime(true);
+        try {
+            $res = Http::timeout($timeout)->withoutRedirecting()->get($url);
+            $latency = (int) round((microtime(true) - $start) * 1000);
+            $status = $res->status();
+
+            // 2xx/3xx = up; a 4xx/5xx means the endpoint answered but is unhealthy.
+            return ['ok' => $status >= 200 && $status < 400, 'latency' => $latency, 'detail' => 'HTTP '.$status];
+        } catch (Throwable $e) {
+            return ['ok' => false, 'latency' => null, 'detail' => $this->reason($e->getMessage())];
+        }
+    }
+
+    private function tcp(string $host, int $port, int $timeout): array
+    {
+        $start = microtime(true);
+        $errno = 0;
+        $errstr = '';
+        $sock = @stream_socket_client('tcp://'.$host.':'.$port, $errno, $errstr, $timeout);
+
+        if (! $sock) {
+            return ['ok' => false, 'latency' => null, 'detail' => $errstr !== '' ? $errstr : 'connection failed'];
+        }
+
+        fclose($sock);
+        $latency = (int) round((microtime(true) - $start) * 1000);
+
+        return ['ok' => true, 'latency' => $latency, 'detail' => 'TCP '.$port.' open'];
+    }
+
+    /** Keep the failure reason short + on one line for the compact status row. */
+    private function reason(string $msg): string
+    {
+        $msg = trim(preg_split('/\R/', $msg)[0] ?? $msg);
+
+        return mb_strlen($msg) > 80 ? mb_substr($msg, 0, 80).'…' : $msg;
+    }
+}
diff --git a/app/Support/Confirm/ConfirmToken.php b/app/Support/Confirm/ConfirmToken.php
index 44e0688..579b969 100644
--- a/app/Support/Confirm/ConfirmToken.php
+++ b/app/Support/Confirm/ConfirmToken.php
@@ -72,6 +72,7 @@ class ConfirmToken
         'runbookDeleted',
         'patchApply',
         'certEndpointDeleted',
+        'healthCheckDeleted',
     ];
 
     /** How long an issued confirm stays valid (seconds) — generous for a human click. */
diff --git a/database/migrations/2026_07_05_100006_create_health_checks_table.php b/database/migrations/2026_07_05_100006_create_health_checks_table.php
new file mode 100644
index 0000000..146f753
--- /dev/null
+++ b/database/migrations/2026_07_05_100006_create_health_checks_table.php
@@ -0,0 +1,26 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('health_checks', function (Blueprint $table) {
+            $table->id();
+            $table->uuid('uuid')->unique();
+            $table->string('label')->nullable();
+            $table->string('type')->default('http');  // http | tcp
+            $table->string('target');                  // http: a URL; tcp: a host
+            $table->unsignedSmallInteger('port')->nullable(); // tcp only
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('health_checks');
+    }
+};
diff --git a/lang/de/audit.php b/lang/de/audit.php
index daf7651..ed43b19 100644
--- a/lang/de/audit.php
+++ b/lang/de/audit.php
@@ -67,6 +67,8 @@ return [
         'firewall.rule_add' => 'Firewall-Regel hinzugefügt',
         'firewall.rule_delete' => 'Firewall-Regel gelöscht',
         'group.create' => 'Server-Gruppe angelegt',
+        'health.check_add' => 'Verfügbarkeits-Prüfung hinzugefügt',
+        'health.check_delete' => 'Verfügbarkeits-Prüfung entfernt',
         'group.update' => 'Server-Gruppe geändert',
         'group.delete' => 'Server-Gruppe gelöscht',
         'group.members' => 'Gruppen-Zuordnung geändert',
diff --git a/lang/de/health.php b/lang/de/health.php
new file mode 100644
index 0000000..a641c4e
--- /dev/null
+++ b/lang/de/health.php
@@ -0,0 +1,38 @@
+<?php
+
+return [
+    'eyebrow' => 'Betrieb',
+    'title' => 'Verfügbarkeit',
+    'subtitle' => 'HTTP-/TCP-Erreichbarkeit überwachter Dienste',
+
+    'scan_hint' => 'Prüfe Dienste …',
+    'up_of' => ':up/:total erreichbar',
+
+    // Add
+    'new_check' => 'Neue Prüfung',
+    'label_label' => 'Bezeichnung',
+    'type_label' => 'Typ',
+    'type_http' => 'HTTP',
+    'type_tcp' => 'TCP',
+    'target_label' => 'Ziel',
+    'target_http_placeholder' => 'https://dienst.example.com',
+    'target_tcp_placeholder' => 'host.example.com',
+    'port_label' => 'Port',
+    'add' => 'Hinzufügen',
+
+    // List
+    'no_checks_title' => 'Keine Prüfungen',
+    'no_checks' => 'Noch keine überwachten Dienste. Füge oben den ersten hinzu.',
+    'status_up' => 'Erreichbar',
+    'status_down' => 'Ausfall',
+    'latency' => ':ms ms',
+    'delete' => 'Entfernen',
+
+    // Toasts
+    'added' => 'Prüfung hinzugefügt.',
+    'deleted' => 'Prüfung entfernt.',
+
+    // Delete confirm
+    'delete_heading' => 'Prüfung entfernen',
+    'delete_body' => ':target wird nicht mehr überwacht.',
+];
diff --git a/lang/de/shell.php b/lang/de/shell.php
index f53f9a8..69de19c 100644
--- a/lang/de/shell.php
+++ b/lang/de/shell.php
@@ -28,6 +28,7 @@ return [
     'nav_posture' => 'Sicherheitslage',
     'nav_patch' => 'Updates',
     'nav_certs' => 'Zertifikate',
+    'nav_health' => 'Verfügbarkeit',
     'nav_threats' => 'Bedrohungen',
     'nav_versions' => 'Version',
     'nav_help' => 'Hilfe',
diff --git a/lang/en/audit.php b/lang/en/audit.php
index 1b8e78a..863399e 100644
--- a/lang/en/audit.php
+++ b/lang/en/audit.php
@@ -67,6 +67,8 @@ return [
         'firewall.rule_add' => 'Firewall rule added',
         'firewall.rule_delete' => 'Firewall rule deleted',
         'group.create' => 'Server group created',
+        'health.check_add' => 'Uptime check added',
+        'health.check_delete' => 'Uptime check removed',
         'group.update' => 'Server group changed',
         'group.delete' => 'Server group deleted',
         'group.members' => 'Group membership changed',
diff --git a/lang/en/health.php b/lang/en/health.php
new file mode 100644
index 0000000..0806f63
--- /dev/null
+++ b/lang/en/health.php
@@ -0,0 +1,38 @@
+<?php
+
+return [
+    'eyebrow' => 'Operations',
+    'title' => 'Uptime',
+    'subtitle' => 'HTTP/TCP reachability of monitored services',
+
+    'scan_hint' => 'Checking services …',
+    'up_of' => ':up/:total up',
+
+    // Add
+    'new_check' => 'New check',
+    'label_label' => 'Label',
+    'type_label' => 'Type',
+    'type_http' => 'HTTP',
+    'type_tcp' => 'TCP',
+    'target_label' => 'Target',
+    'target_http_placeholder' => 'https://service.example.com',
+    'target_tcp_placeholder' => 'host.example.com',
+    'port_label' => 'Port',
+    'add' => 'Add',
+
+    // List
+    'no_checks_title' => 'No checks',
+    'no_checks' => 'No monitored services yet. Add the first one above.',
+    'status_up' => 'Up',
+    'status_down' => 'Down',
+    'latency' => ':ms ms',
+    'delete' => 'Remove',
+
+    // Toasts
+    'added' => 'Check added.',
+    'deleted' => 'Check removed.',
+
+    // Delete confirm
+    'delete_heading' => 'Remove check',
+    'delete_body' => ':target will no longer be monitored.',
+];
diff --git a/lang/en/shell.php b/lang/en/shell.php
index fd1ac91..42d7588 100644
--- a/lang/en/shell.php
+++ b/lang/en/shell.php
@@ -28,6 +28,7 @@ return [
     'nav_posture' => 'Security posture',
     'nav_patch' => 'Updates',
     'nav_certs' => 'Certificates',
+    'nav_health' => 'Uptime',
     'nav_threats' => 'Threats',
     'nav_versions' => 'Version',
     'nav_help' => 'Help',
diff --git a/resources/views/components/sidebar.blade.php b/resources/views/components/sidebar.blade.php
index 4f20579..fdb4258 100644
--- a/resources/views/components/sidebar.blade.php
+++ b/resources/views/components/sidebar.blade.php
@@ -64,6 +64,7 @@
             <x-nav-item icon="shield-check" href="/posture" :active="request()->is('posture*')">{{ __('shell.nav_posture') }}</x-nav-item>
             <x-nav-item icon="rotate" href="/patch" :active="request()->is('patch*')">{{ __('shell.nav_patch') }}</x-nav-item>
             <x-nav-item icon="lock" href="/certs" :active="request()->is('certs*')">{{ __('shell.nav_certs') }}</x-nav-item>
+            <x-nav-item icon="activity" href="/health" :active="request()->is('health*')">{{ __('shell.nav_health') }}</x-nav-item>
         @endcan
         @can('manage-panel')
             <x-nav-item icon="alert" href="/alerts" :active="request()->is('alerts*')" :badge="$alertCount > 0 ? $alertCount : null" :badge-title="$alertCount > 0 ? __('alerts.incidents_title') : null">{{ __('shell.nav_alerts') }}</x-nav-item>
diff --git a/resources/views/livewire/health/index.blade.php b/resources/views/livewire/health/index.blade.php
new file mode 100644
index 0000000..ffac549
--- /dev/null
+++ b/resources/views/livewire/health/index.blade.php
@@ -0,0 +1,82 @@
+@php
+    $field = 'h-9 w-full rounded-md border border-line bg-inset px-3 text-sm text-ink placeholder:text-ink-4 focus:border-accent/40 focus:outline-none';
+    $label = 'mb-1 block font-mono text-[11px] uppercase tracking-wider text-ink-3';
+@endphp
+
+<div class="space-y-5" @if (! $ready) wire:init="scan" @endif>
+    {{-- Header --}}
+    <div class="flex flex-wrap items-end justify-between gap-3">
+        <div>
+            <p class="font-mono text-[11px] uppercase tracking-[0.2em] text-accent-text">{{ __('health.eyebrow') }}</p>
+            <h2 class="mt-0.5 font-display text-xl font-semibold text-ink sm:text-2xl">{{ __('health.title') }}</h2>
+            <p class="mt-1 text-sm text-ink-3">{{ __('health.subtitle') }}</p>
+        </div>
+        @if ($ready && $total > 0)
+            <x-status-pill :status="$up === $total ? 'online' : 'offline'">{{ __('health.up_of', ['up' => $up, 'total' => $total]) }}</x-status-pill>
+        @endif
+    </div>
+
+    {{-- Add check --}}
+    <x-panel :title="__('health.new_check')">
+        <form wire:submit="addCheck" class="grid gap-3 sm:grid-cols-[minmax(0,10rem)_7rem_minmax(0,1fr)_6rem_auto] sm:items-end">
+            <div>
+                <label class="{{ $label }}">{{ __('health.label_label') }}</label>
+                <input wire:model="label" type="text" maxlength="60" class="{{ $field }}" />
+            </div>
+            <div>
+                <label class="{{ $label }}">{{ __('health.type_label') }}</label>
+                <select wire:model.live="type" class="{{ $field }}">
+                    <option value="http">{{ __('health.type_http') }}</option>
+                    <option value="tcp">{{ __('health.type_tcp') }}</option>
+                </select>
+            </div>
+            <div>
+                <label class="{{ $label }}">{{ __('health.target_label') }}</label>
+                <input wire:model="target" type="text" maxlength="2048" class="{{ $field }} font-mono"
+                       placeholder="{{ $type === 'tcp' ? __('health.target_tcp_placeholder') : __('health.target_http_placeholder') }}" />
+                @error('target') <p class="mt-1 font-mono text-[11px] text-offline">{{ $message }}</p> @enderror
+            </div>
+            <div @class(['invisible' => $type !== 'tcp'])>
+                <label class="{{ $label }}">{{ __('health.port_label') }}</label>
+                <input wire:model="port" type="number" min="1" max="65535" class="{{ $field }} font-mono" />
+                @error('port') <p class="mt-1 font-mono text-[11px] text-offline">{{ $message }}</p> @enderror
+            </div>
+            <x-btn variant="primary" size="lg" type="submit">{{ __('health.add') }}</x-btn>
+        </form>
+    </x-panel>
+
+    {{-- Checks --}}
+    @if ($checks->isEmpty())
+        <x-panel>
+            <div class="py-8 text-center">
+                <p class="font-display text-sm font-semibold text-ink">{{ __('health.no_checks_title') }}</p>
+                <p class="mt-1 max-w-sm text-xs text-ink-3">{{ __('health.no_checks') }}</p>
+            </div>
+        </x-panel>
+    @else
+        <x-panel :padded="false">
+            <div class="divide-y divide-line">
+                @foreach ($checks as $check)
+                    @php($r = $results[$check->uuid] ?? null)
+                    <div wire:key="hc-{{ $check->uuid }}" class="flex flex-wrap items-center gap-3 px-4 py-3 sm:px-5">
+                        <x-status-dot :status="$r ? ($r['ok'] ? 'online' : 'offline') : 'pending'" :ping="$r && $r['ok']" class="h-2.5 w-2.5" />
+                        <div class="min-w-0 flex-1">
+                            <p class="truncate text-sm text-ink">{{ $check->label ?: $check->target }}</p>
+                            <p class="truncate font-mono text-[11px] text-ink-3">
+                                <span class="uppercase">{{ $check->type }}</span> · {{ $check->target }}@if ($check->type === 'tcp'):{{ $check->port }}@endif
+                                @if ($r) · {{ $r['detail'] }} @endif
+                            </p>
+                        </div>
+                        @if ($r && ! is_null($r['latency']))
+                            <span class="shrink-0 font-mono text-[11px] text-ink-4">{{ __('health.latency', ['ms' => $r['latency']]) }}</span>
+                        @endif
+                        @if ($r)
+                            <x-status-pill :status="$r['ok'] ? 'online' : 'offline'">{{ $r['ok'] ? __('health.status_up') : __('health.status_down') }}</x-status-pill>
+                        @endif
+                        <x-modal-trigger variant="danger-soft" action="confirmDeleteCheck('{{ $check->uuid }}')">{{ __('health.delete') }}</x-modal-trigger>
+                    </div>
+                @endforeach
+            </div>
+        </x-panel>
+    @endif
+</div>
diff --git a/routes/web.php b/routes/web.php
index 16ce17a..37a31cf 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -13,6 +13,7 @@ use App\Livewire\Commands;
 use App\Livewire\Dashboard;
 use App\Livewire\Docker;
 use App\Livewire\Files;
+use App\Livewire\Health;
 use App\Livewire\Help;
 use App\Livewire\Patch;
 use App\Livewire\Posture;
@@ -243,6 +244,7 @@ Route::middleware('auth')->group(function () {
         Route::get('/posture', Posture\Index::class)->middleware('can:operate')->name('posture');
         Route::get('/patch', Patch\Index::class)->middleware('can:operate')->name('patch');
         Route::get('/certs', Certs\Index::class)->middleware('can:operate')->name('certs');
+        Route::get('/health', Health\Index::class)->middleware('can:operate')->name('health');
         Route::get('/help', Help\Index::class)->name('help');
         Route::get('/wireguard', Wireguard\Index::class)->middleware('can:manage-network')->name('wireguard');
         Route::get('/terminal', Terminal\Index::class)->name('terminal');
diff --git a/tests/Feature/HealthComponentTest.php b/tests/Feature/HealthComponentTest.php
new file mode 100644
index 0000000..312bf05
--- /dev/null
+++ b/tests/Feature/HealthComponentTest.php
@@ -0,0 +1,126 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Livewire\Health\Index;
+use App\Models\HealthCheck;
+use App\Models\User;
+use App\Services\HealthService;
+use App\Support\Confirm\ConfirmToken;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use Mockery;
+use Tests\TestCase;
+
+class HealthComponentTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function tearDown(): void
+    {
+        Mockery::close();
+        parent::tearDown();
+    }
+
+    private function operator(): User
+    {
+        return User::factory()->operator()->create(['must_change_password' => false]);
+    }
+
+    private function viewer(): User
+    {
+        return User::factory()->viewer()->create(['must_change_password' => false]);
+    }
+
+    public function test_viewer_cannot_open_health(): void
+    {
+        $this->actingAs($this->viewer())->get('/health')->assertForbidden();
+    }
+
+    public function test_operator_can_open_health(): void
+    {
+        $this->actingAs($this->operator())->get('/health')->assertOk();
+    }
+
+    public function test_operator_adds_an_http_check_and_it_is_audited(): void
+    {
+        $this->actingAs($this->operator());
+
+        Livewire::test(Index::class)
+            ->set('type', 'http')
+            ->set('target', 'https://svc.example.com/health')
+            ->call('addCheck')
+            ->assertHasNoErrors();
+
+        $this->assertDatabaseHas('health_checks', ['type' => 'http', 'target' => 'https://svc.example.com/health', 'port' => null]);
+        $this->assertDatabaseHas('audit_events', ['action' => 'health.check_add']);
+    }
+
+    public function test_http_check_rejects_a_non_url(): void
+    {
+        $this->actingAs($this->operator());
+
+        Livewire::test(Index::class)
+            ->set('type', 'http')
+            ->set('target', 'not a url; rm -rf')
+            ->call('addCheck')
+            ->assertHasErrors('target');
+
+        $this->assertDatabaseCount('health_checks', 0);
+    }
+
+    public function test_tcp_check_requires_a_host_and_port(): void
+    {
+        $this->actingAs($this->operator());
+
+        Livewire::test(Index::class)
+            ->set('type', 'tcp')
+            ->set('target', 'db.example.com')
+            ->set('port', 5432)
+            ->call('addCheck')
+            ->assertHasNoErrors();
+
+        $this->assertDatabaseHas('health_checks', ['type' => 'tcp', 'target' => 'db.example.com', 'port' => 5432]);
+    }
+
+    public function test_tcp_check_rejects_a_missing_port(): void
+    {
+        $this->actingAs($this->operator());
+
+        Livewire::test(Index::class)
+            ->set('type', 'tcp')
+            ->set('target', 'db.example.com')
+            ->set('port', null)
+            ->call('addCheck')
+            ->assertHasErrors('port');
+    }
+
+    public function test_scan_probes_each_check(): void
+    {
+        $this->actingAs($this->operator());
+        HealthCheck::create(['type' => 'http', 'target' => 'https://svc.example.com']);
+
+        $health = Mockery::mock(HealthService::class);
+        $health->shouldReceive('probe')->once()->andReturn(['ok' => true, 'latency' => 42, 'detail' => 'HTTP 200']);
+        app()->instance(HealthService::class, $health);
+
+        Livewire::test(Index::class)
+            ->call('scan')
+            ->assertOk()
+            ->assertSet('ready', true)
+            ->assertSee(__('health.status_up'))
+            ->assertViewHas('up', 1);
+    }
+
+    public function test_operator_deletes_a_check_via_a_confirmed_token(): void
+    {
+        $this->actingAs($this->operator());
+        $check = HealthCheck::create(['type' => 'http', 'target' => 'https://gone.example.com']);
+        $token = ConfirmToken::issue('healthCheckDeleted', ['uuid' => $check->uuid], 'health.check_delete', $check->target, null);
+        ConfirmToken::confirm($token);
+
+        Livewire::test(Index::class)->call('deleteCheck', $token)->assertOk();
+
+        $this->assertDatabaseMissing('health_checks', ['id' => $check->id]);
+    }
+}
diff --git a/tests/Feature/HealthServiceTest.php b/tests/Feature/HealthServiceTest.php
new file mode 100644
index 0000000..227f57b
--- /dev/null
+++ b/tests/Feature/HealthServiceTest.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\HealthCheck;
+use App\Services\HealthService;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Http\Client\ConnectionException;
+use Illuminate\Support\Facades\Http;
+use Tests\TestCase;
+
+class HealthServiceTest extends TestCase
+{
+    use RefreshDatabase;
+
+    private function httpCheck(string $url = 'https://svc.example.com/health'): HealthCheck
+    {
+        return HealthCheck::create(['type' => 'http', 'target' => $url]);
+    }
+
+    public function test_http_2xx_is_up(): void
+    {
+        Http::fake(['*' => Http::response('ok', 200)]);
+
+        $r = (new HealthService)->probe($this->httpCheck());
+
+        $this->assertTrue($r['ok']);
+        $this->assertSame('HTTP 200', $r['detail']);
+        $this->assertNotNull($r['latency']);
+    }
+
+    public function test_http_5xx_is_down_but_answered(): void
+    {
+        Http::fake(['*' => Http::response('boom', 500)]);
+
+        $r = (new HealthService)->probe($this->httpCheck());
+
+        $this->assertFalse($r['ok']);
+        $this->assertSame('HTTP 500', $r['detail']);
+    }
+
+    public function test_http_connection_error_is_down(): void
+    {
+        Http::fake(fn () => throw new ConnectionException('Could not resolve host'));
+
+        $r = (new HealthService)->probe($this->httpCheck());
+
+        $this->assertFalse($r['ok']);
+        $this->assertNull($r['latency']);
+        $this->assertStringContainsString('resolve host', $r['detail']);
+    }
+
+    public function test_tcp_to_a_refused_port_is_down(): void
+    {
+        $check = HealthCheck::create(['type' => 'tcp', 'target' => '127.0.0.1', 'port' => 1]);
+
+        $r = (new HealthService)->probe($check, 1);
+
+        $this->assertFalse($r['ok']);
+        $this->assertArrayHasKey('detail', $r);
+    }
+}