diff --git a/app/Livewire/Certs/Index.php b/app/Livewire/Certs/Index.php
new file mode 100644
index 0000000..5527778
--- /dev/null
+++ b/app/Livewire/Certs/Index.php
@@ -0,0 +1,139 @@
+<?php
+
+namespace App\Livewire\Certs;
+
+use App\Models\AuditEvent;
+use App\Models\CertEndpoint;
+use App\Services\CertService;
+use App\Support\Confirm\ConfirmToken;
+use App\Support\Confirm\InvalidConfirmToken;
+use Illuminate\Contracts\View\View;
+use Illuminate\Support\Facades\Auth;
+use Livewire\Attributes\Layout;
+use Livewire\Attributes\On;
+use Livewire\Component;
+use Throwable;
+
+/**
+ * TLS certificate-expiry monitoring for configured endpoints. `operate`-gated (route + mount +
+ * per-method). The expiry check is native (a PHP SSL stream in CertService — no SSH/shell, so the
+ * host is never interpolated into a command); the lazy scan is per-endpoint guarded. Deleting an
+ * endpoint goes through a signed ConfirmToken + R5 modal.
+ */
+#[Layout('layouts.app')]
+class Index extends Component
+{
+    // Add-endpoint form
+    public string $label = '';
+
+    public string $host = '';
+
+    public int $port = 443;
+
+    /** @var array<string, array<string, mixed>> endpoint uuid → check result (+ 'status') */
+    public array $checks = [];
+
+    public bool $ready = false;
+
+    public function mount(): void
+    {
+        abort_unless(Auth::user()?->can('operate'), 403);
+    }
+
+    public function title(): string
+    {
+        return __('certs.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(CertService $certs): void
+    {
+        $this->gate();
+        $this->checks = [];
+
+        foreach (CertEndpoint::orderBy('host')->get() as $ep) {
+            try {
+                $res = $certs->check($ep->host, $ep->port);
+                $res['status'] = $res['ok'] ? $certs->status($res['daysLeft'] ?? null) : 'error';
+                $this->checks[$ep->uuid] = $res;
+            } catch (Throwable $e) {
+                $this->checks[$ep->uuid] = ['ok' => false, 'status' => 'error', 'error' => $e->getMessage()];
+            }
+        }
+
+        $this->ready = true;
+    }
+
+    public function addEndpoint(): void
+    {
+        $this->gate();
+
+        $data = $this->validate([
+            'label' => ['nullable', 'string', 'max:60'],
+            // A hostname or an IP — never a scheme/path/shell char (it's used in ssl://host:port).
+            'host' => ['required', 'string', 'max:253', 'regex:/^[A-Za-z0-9]([A-Za-z0-9.\-]*[A-Za-z0-9])?$/'],
+            'port' => ['required', 'integer', 'min:1', 'max:65535'],
+        ]);
+
+        CertEndpoint::create($data);
+        $this->audit('cert.endpoint_add', $data['host'].':'.$data['port']);
+        $this->reset('label', 'host');
+        $this->port = 443;
+        $this->dispatch('notify', message: __('certs.added', ['host' => $data['host']]));
+    }
+
+    public function confirmDeleteEndpoint(string $uuid): void
+    {
+        $this->gate();
+        $ep = CertEndpoint::where('uuid', $uuid)->firstOrFail();
+
+        $this->dispatch('openModal',
+            component: 'modals.confirm-action',
+            arguments: [
+                'heading' => __('certs.delete_heading'),
+                'body' => __('certs.delete_body', ['host' => $ep->host]),
+                'confirmLabel' => __('common.delete'),
+                'danger' => true,
+                'icon' => 'trash',
+                'notify' => __('certs.deleted', ['host' => $ep->host]),
+                'token' => ConfirmToken::issue('certEndpointDeleted', ['uuid' => $ep->uuid], 'cert.endpoint_delete', $ep->host.':'.$ep->port, null),
+            ],
+        );
+    }
+
+    #[On('certEndpointDeleted')]
+    public function deleteEndpoint(string $confirmToken): void
+    {
+        $this->gate();
+
+        try {
+            $payload = ConfirmToken::consume($confirmToken, 'certEndpointDeleted');
+        } catch (InvalidConfirmToken) {
+            return;
+        }
+
+        CertEndpoint::where('uuid', $payload['params']['uuid'])->first()?->delete();
+    }
+
+    public function render(): View
+    {
+        return view('livewire.certs.index', [
+            'endpoints' => CertEndpoint::orderBy('host')->get(),
+        ])->title($this->title());
+    }
+}
diff --git a/app/Models/CertEndpoint.php b/app/Models/CertEndpoint.php
new file mode 100644
index 0000000..d2930e8
--- /dev/null
+++ b/app/Models/CertEndpoint.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Str;
+
+/** A TLS endpoint (host:port) whose certificate expiry Clusev monitors. */
+class CertEndpoint extends Model
+{
+    protected $guarded = [];
+
+    protected $casts = ['port' => 'integer'];
+
+    protected static function booted(): void
+    {
+        static::creating(fn (self $e) => $e->uuid ??= (string) Str::uuid());
+    }
+
+    public function getRouteKeyName(): string
+    {
+        return 'uuid';
+    }
+}
diff --git a/app/Services/CertService.php b/app/Services/CertService.php
new file mode 100644
index 0000000..fc1d6f1
--- /dev/null
+++ b/app/Services/CertService.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace App\Services;
+
+/**
+ * Reads a TLS endpoint's certificate expiry natively (a PHP SSL stream + openssl_x509_parse) — no
+ * SSH, no shell, so `host` is never interpolated into a command. Trust is intentionally NOT verified
+ * (verify_peer off): the point is to report expiry even for a self-signed or already-expired cert.
+ * Monitoring internal endpoints is a legitimate use, so private/internal hosts are allowed.
+ */
+class CertService
+{
+    /**
+     * @return array{ok:bool, subject?:string, issuer?:string, expiresAt?:int, daysLeft?:?int, error?:string}
+     */
+    public function check(string $host, int $port, int $timeout = 5): array
+    {
+        $ctx = stream_context_create(['ssl' => [
+            'capture_peer_cert' => true,
+            'verify_peer' => false,
+            'verify_peer_name' => false,
+            'SNI_enabled' => true,
+            'peer_name' => $host,
+        ]]);
+
+        $errno = 0;
+        $errstr = '';
+        // @ — a refused/timed-out/unresolved endpoint is a normal result here, not a PHP warning.
+        $client = @stream_socket_client(
+            'ssl://'.$host.':'.$port,
+            $errno,
+            $errstr,
+            $timeout,
+            STREAM_CLIENT_CONNECT,
+            $ctx,
+        );
+
+        if (! $client) {
+            return ['ok' => false, 'error' => $errstr !== '' ? $errstr : 'connection failed'];
+        }
+
+        $params = stream_context_get_params($client);
+        fclose($client);
+
+        $cert = $params['options']['ssl']['peer_certificate'] ?? null;
+        if ($cert === null) {
+            return ['ok' => false, 'error' => 'no certificate presented'];
+        }
+
+        return ['ok' => true] + $this->certInfo($cert);
+    }
+
+    /**
+     * Extract subject/issuer/expiry from an openssl cert (resource or PEM). Split out so it is unit-
+     * testable against a generated cert without a live network connection.
+     *
+     * @param  \OpenSSLCertificate|string  $cert
+     * @return array{subject:string, issuer:string, expiresAt:?int, daysLeft:?int}
+     */
+    public function certInfo($cert): array
+    {
+        $parsed = openssl_x509_parse($cert) ?: [];
+        $expiresAt = isset($parsed['validTo_time_t']) ? (int) $parsed['validTo_time_t'] : null;
+
+        return [
+            'subject' => (string) ($parsed['subject']['CN'] ?? ($parsed['subject']['O'] ?? '—')),
+            'issuer' => (string) ($parsed['issuer']['CN'] ?? ($parsed['issuer']['O'] ?? '—')),
+            'expiresAt' => $expiresAt,
+            'daysLeft' => $expiresAt !== null ? (int) floor(($expiresAt - time()) / 86400) : null,
+        ];
+    }
+
+    /** expired · critical (<7d) · warning (<30d) · ok — mapped to the status triad in the UI. */
+    public function status(?int $daysLeft): string
+    {
+        if ($daysLeft === null) {
+            return 'unknown';
+        }
+
+        return match (true) {
+            $daysLeft < 0 => 'expired',
+            $daysLeft < 7 => 'critical',
+            $daysLeft < 30 => 'warning',
+            default => 'ok',
+        };
+    }
+}
diff --git a/app/Support/Confirm/ConfirmToken.php b/app/Support/Confirm/ConfirmToken.php
index f6bbf89..44e0688 100644
--- a/app/Support/Confirm/ConfirmToken.php
+++ b/app/Support/Confirm/ConfirmToken.php
@@ -71,6 +71,7 @@ class ConfirmToken
         'commandRun',
         'runbookDeleted',
         'patchApply',
+        'certEndpointDeleted',
     ];
 
     /** How long an issued confirm stays valid (seconds) — generous for a human click. */
diff --git a/database/migrations/2026_07_05_100005_create_cert_endpoints_table.php b/database/migrations/2026_07_05_100005_create_cert_endpoints_table.php
new file mode 100644
index 0000000..7caa6b0
--- /dev/null
+++ b/database/migrations/2026_07_05_100005_create_cert_endpoints_table.php
@@ -0,0 +1,27 @@
+<?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('cert_endpoints', function (Blueprint $table) {
+            $table->id();
+            $table->uuid('uuid')->unique();
+            $table->string('label')->nullable();
+            $table->string('host');
+            $table->unsignedSmallInteger('port')->default(443);
+            $table->timestamps();
+
+            $table->unique(['host', 'port']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('cert_endpoints');
+    }
+};
diff --git a/lang/de/audit.php b/lang/de/audit.php
index 9470093..daf7651 100644
--- a/lang/de/audit.php
+++ b/lang/de/audit.php
@@ -57,6 +57,8 @@ return [
         'fail2ban.configure' => 'fail2ban konfiguriert',
         'fail2ban.ignoreip_add' => 'fail2ban: Ausnahme hinzugefügt',
         'fail2ban.ignoreip_remove' => 'fail2ban: Ausnahme entfernt',
+        'cert.endpoint_add' => 'Zertifikat-Endpunkt hinzugefügt',
+        'cert.endpoint_delete' => 'Zertifikat-Endpunkt entfernt',
         'command.run' => 'Fleet-Befehl ausgeführt',
         'docker.action' => 'Container-Aktion',
         'runbook.create' => 'Runbook angelegt',
diff --git a/lang/de/certs.php b/lang/de/certs.php
new file mode 100644
index 0000000..3e4375c
--- /dev/null
+++ b/lang/de/certs.php
@@ -0,0 +1,42 @@
+<?php
+
+return [
+    'eyebrow' => 'Sicherheit',
+    'title' => 'Zertifikate',
+    'subtitle' => 'TLS-Ablauf überwachter Endpunkte',
+
+    'scan_hint' => 'Prüfe Zertifikate …',
+
+    // Add
+    'new_endpoint' => 'Neuer Endpunkt',
+    'label_label' => 'Bezeichnung',
+    'host_label' => 'Host',
+    'port_label' => 'Port',
+    'add' => 'Hinzufügen',
+
+    // List
+    'no_endpoints_title' => 'Keine Endpunkte',
+    'no_endpoints' => 'Noch keine überwachten Endpunkte. Füge oben den ersten hinzu.',
+    'expires_in' => 'läuft in :days Tagen ab',
+    'expired_since' => 'abgelaufen vor :days Tagen',
+    'expires_today' => 'läuft heute ab',
+    'issuer' => 'Aussteller: :issuer',
+    'check_error' => 'nicht erreichbar',
+    'delete' => 'Entfernen',
+
+    // Status
+    'status_ok' => 'Gültig',
+    'status_warning' => 'Bald fällig',
+    'status_critical' => 'Kritisch',
+    'status_expired' => 'Abgelaufen',
+    'status_error' => 'Fehler',
+    'status_unknown' => 'Unbekannt',
+
+    // Toasts
+    'added' => 'Endpunkt :host hinzugefügt.',
+    'deleted' => 'Endpunkt :host entfernt.',
+
+    // Delete confirm
+    'delete_heading' => 'Endpunkt entfernen',
+    'delete_body' => 'Der Endpunkt :host wird nicht mehr überwacht.',
+];
diff --git a/lang/de/shell.php b/lang/de/shell.php
index a95603d..f53f9a8 100644
--- a/lang/de/shell.php
+++ b/lang/de/shell.php
@@ -27,6 +27,7 @@ return [
     'nav_alerts' => 'Alarme',
     'nav_posture' => 'Sicherheitslage',
     'nav_patch' => 'Updates',
+    'nav_certs' => 'Zertifikate',
     'nav_threats' => 'Bedrohungen',
     'nav_versions' => 'Version',
     'nav_help' => 'Hilfe',
diff --git a/lang/en/audit.php b/lang/en/audit.php
index f24b874..1b8e78a 100644
--- a/lang/en/audit.php
+++ b/lang/en/audit.php
@@ -57,6 +57,8 @@ return [
         'fail2ban.configure' => 'fail2ban configured',
         'fail2ban.ignoreip_add' => 'fail2ban: exception added',
         'fail2ban.ignoreip_remove' => 'fail2ban: exception removed',
+        'cert.endpoint_add' => 'Certificate endpoint added',
+        'cert.endpoint_delete' => 'Certificate endpoint removed',
         'command.run' => 'Fleet command run',
         'docker.action' => 'Container action',
         'runbook.create' => 'Runbook created',
diff --git a/lang/en/certs.php b/lang/en/certs.php
new file mode 100644
index 0000000..b64c46a
--- /dev/null
+++ b/lang/en/certs.php
@@ -0,0 +1,42 @@
+<?php
+
+return [
+    'eyebrow' => 'Security',
+    'title' => 'Certificates',
+    'subtitle' => 'TLS expiry of monitored endpoints',
+
+    'scan_hint' => 'Checking certificates …',
+
+    // Add
+    'new_endpoint' => 'New endpoint',
+    'label_label' => 'Label',
+    'host_label' => 'Host',
+    'port_label' => 'Port',
+    'add' => 'Add',
+
+    // List
+    'no_endpoints_title' => 'No endpoints',
+    'no_endpoints' => 'No monitored endpoints yet. Add the first one above.',
+    'expires_in' => 'expires in :days days',
+    'expired_since' => 'expired :days days ago',
+    'expires_today' => 'expires today',
+    'issuer' => 'Issuer: :issuer',
+    'check_error' => 'unreachable',
+    'delete' => 'Remove',
+
+    // Status
+    'status_ok' => 'Valid',
+    'status_warning' => 'Due soon',
+    'status_critical' => 'Critical',
+    'status_expired' => 'Expired',
+    'status_error' => 'Error',
+    'status_unknown' => 'Unknown',
+
+    // Toasts
+    'added' => 'Endpoint :host added.',
+    'deleted' => 'Endpoint :host removed.',
+
+    // Delete confirm
+    'delete_heading' => 'Remove endpoint',
+    'delete_body' => 'The endpoint :host will no longer be monitored.',
+];
diff --git a/lang/en/shell.php b/lang/en/shell.php
index 6b18bb4..fd1ac91 100644
--- a/lang/en/shell.php
+++ b/lang/en/shell.php
@@ -27,6 +27,7 @@ return [
     'nav_alerts' => 'Alerts',
     'nav_posture' => 'Security posture',
     'nav_patch' => 'Updates',
+    'nav_certs' => 'Certificates',
     '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 b381e4f..4f20579 100644
--- a/resources/views/components/sidebar.blade.php
+++ b/resources/views/components/sidebar.blade.php
@@ -63,6 +63,7 @@
         @can('operate')
             <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>
         @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/certs/index.blade.php b/resources/views/livewire/certs/index.blade.php
new file mode 100644
index 0000000..f307ed2
--- /dev/null
+++ b/resources/views/livewire/certs/index.blade.php
@@ -0,0 +1,78 @@
+@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';
+    $statusPill = ['ok' => 'online', 'warning' => 'warning', 'critical' => 'offline', 'expired' => 'offline', 'error' => 'offline', 'unknown' => 'pending'];
+@endphp
+
+<div class="space-y-5" @if (! $ready) wire:init="scan" @endif>
+    {{-- Header --}}
+    <div>
+        <p class="font-mono text-[11px] uppercase tracking-[0.2em] text-accent-text">{{ __('certs.eyebrow') }}</p>
+        <h2 class="mt-0.5 font-display text-xl font-semibold text-ink sm:text-2xl">{{ __('certs.title') }}</h2>
+        <p class="mt-1 text-sm text-ink-3">{{ __('certs.subtitle') }}</p>
+    </div>
+
+    {{-- Add endpoint --}}
+    <x-panel :title="__('certs.new_endpoint')">
+        <form wire:submit="addEndpoint" class="grid gap-3 sm:grid-cols-[minmax(0,12rem)_minmax(0,1fr)_6rem_auto] sm:items-end">
+            <div>
+                <label class="{{ $label }}">{{ __('certs.label_label') }}</label>
+                <input wire:model="label" type="text" maxlength="60" class="{{ $field }}" />
+            </div>
+            <div>
+                <label class="{{ $label }}">{{ __('certs.host_label') }}</label>
+                <input wire:model="host" type="text" maxlength="253" placeholder="example.com" class="{{ $field }} font-mono" />
+                @error('host') <p class="mt-1 font-mono text-[11px] text-offline">{{ $message }}</p> @enderror
+            </div>
+            <div>
+                <label class="{{ $label }}">{{ __('certs.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">{{ $message }}</p> @enderror
+            </div>
+            <x-btn variant="primary" size="lg" type="submit">{{ __('certs.add') }}</x-btn>
+        </form>
+    </x-panel>
+
+    {{-- Endpoints --}}
+    @if ($endpoints->isEmpty())
+        <x-panel>
+            <div class="py-8 text-center">
+                <p class="font-display text-sm font-semibold text-ink">{{ __('certs.no_endpoints_title') }}</p>
+                <p class="mt-1 max-w-sm text-xs text-ink-3">{{ __('certs.no_endpoints') }}</p>
+            </div>
+        </x-panel>
+    @else
+        <x-panel :padded="false">
+            <div class="divide-y divide-line">
+                @foreach ($endpoints as $ep)
+                    @php($c = $checks[$ep->uuid] ?? null)
+                    <div wire:key="ce-{{ $ep->uuid }}" class="flex flex-wrap items-center gap-3 px-4 py-3 sm:px-5">
+                        <x-status-dot :status="$c ? ($statusPill[$c['status']] ?? 'pending') : 'pending'" class="h-2.5 w-2.5" />
+                        <div class="min-w-0 flex-1">
+                            <p class="truncate text-sm text-ink">{{ $ep->label ?: $ep->host }}</p>
+                            <p class="truncate font-mono text-[11px] text-ink-3">
+                                {{ $ep->host }}:{{ $ep->port }}
+                                @if ($c && ($c['ok'] ?? false) && ! is_null($c['daysLeft'] ?? null))
+                                    ·
+                                    @if ($c['daysLeft'] < 0)
+                                        {{ __('certs.expired_since', ['days' => abs($c['daysLeft'])]) }}
+                                    @elseif ($c['daysLeft'] === 0)
+                                        {{ __('certs.expires_today') }}
+                                    @else
+                                        {{ __('certs.expires_in', ['days' => $c['daysLeft']]) }}
+                                    @endif
+                                @elseif ($c && ! ($c['ok'] ?? false))
+                                    · {{ __('certs.check_error') }}
+                                @endif
+                            </p>
+                        </div>
+                        @if ($c)
+                            <x-status-pill :status="$statusPill[$c['status']] ?? 'pending'">{{ __('certs.status_'.$c['status']) }}</x-status-pill>
+                        @endif
+                        <x-modal-trigger variant="danger-soft" action="confirmDeleteEndpoint('{{ $ep->uuid }}')">{{ __('certs.delete') }}</x-modal-trigger>
+                    </div>
+                @endforeach
+            </div>
+        </x-panel>
+    @endif
+</div>
diff --git a/routes/web.php b/routes/web.php
index 4b58d99..16ce17a 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -8,6 +8,7 @@ use App\Http\Middleware\VerifyTerminalSidecarSecret;
 use App\Livewire\Alerts;
 use App\Livewire\Audit;
 use App\Livewire\Auth;
+use App\Livewire\Certs;
 use App\Livewire\Commands;
 use App\Livewire\Dashboard;
 use App\Livewire\Docker;
@@ -241,6 +242,7 @@ Route::middleware('auth')->group(function () {
         Route::get('/system', System\Index::class)->name('system');
         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('/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/CertServiceTest.php b/tests/Feature/CertServiceTest.php
new file mode 100644
index 0000000..36fa0f4
--- /dev/null
+++ b/tests/Feature/CertServiceTest.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Services\CertService;
+use Tests\TestCase;
+
+class CertServiceTest extends TestCase
+{
+    /** A self-signed cert valid for $days days, so certInfo can be tested without a live network. */
+    private function makeCert(string $cn, int $days): \OpenSSLCertificate
+    {
+        $pk = openssl_pkey_new(['private_key_bits' => 2048, 'private_key_type' => OPENSSL_KEYTYPE_RSA]);
+        $csr = openssl_csr_new(['commonName' => $cn, 'organizationName' => 'Clusev Test'], $pk);
+
+        return openssl_csr_sign($csr, null, $pk, $days);
+    }
+
+    public function test_cert_info_extracts_subject_and_expiry(): void
+    {
+        $info = (new CertService)->certInfo($this->makeCert('svc.example.com', 30));
+
+        $this->assertSame('svc.example.com', $info['subject']);
+        $this->assertNotNull($info['expiresAt']);
+        $this->assertGreaterThanOrEqual(28, $info['daysLeft']); // ~30 days out
+        $this->assertLessThanOrEqual(30, $info['daysLeft']);
+    }
+
+    public function test_status_maps_days_left_to_the_triad(): void
+    {
+        $svc = new CertService;
+
+        $this->assertSame('expired', $svc->status(-1));
+        $this->assertSame('critical', $svc->status(3));
+        $this->assertSame('warning', $svc->status(20));
+        $this->assertSame('ok', $svc->status(60));
+        $this->assertSame('unknown', $svc->status(null));
+    }
+
+    public function test_check_returns_an_error_for_an_unreachable_endpoint(): void
+    {
+        // 127.0.0.1:1 is refused immediately → a fast, network-free failure.
+        $res = (new CertService)->check('127.0.0.1', 1, 1);
+
+        $this->assertFalse($res['ok']);
+        $this->assertArrayHasKey('error', $res);
+    }
+}
diff --git a/tests/Feature/CertsComponentTest.php b/tests/Feature/CertsComponentTest.php
new file mode 100644
index 0000000..b3c0937
--- /dev/null
+++ b/tests/Feature/CertsComponentTest.php
@@ -0,0 +1,112 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Livewire\Certs\Index;
+use App\Models\CertEndpoint;
+use App\Models\User;
+use App\Services\CertService;
+use App\Support\Confirm\ConfirmToken;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use Mockery;
+use Tests\TestCase;
+
+class CertsComponentTest 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_certs(): void
+    {
+        $this->actingAs($this->viewer())->get('/certs')->assertForbidden();
+    }
+
+    public function test_operator_can_open_certs(): void
+    {
+        $this->actingAs($this->operator())->get('/certs')->assertOk();
+    }
+
+    public function test_operator_adds_an_endpoint_and_it_is_audited(): void
+    {
+        $this->actingAs($this->operator());
+
+        Livewire::test(Index::class)
+            ->set('label', 'Panel')
+            ->set('host', 'panel.example.com')
+            ->set('port', 443)
+            ->call('addEndpoint')
+            ->assertHasNoErrors();
+
+        $this->assertDatabaseHas('cert_endpoints', ['host' => 'panel.example.com', 'port' => 443]);
+        $this->assertDatabaseHas('audit_events', ['action' => 'cert.endpoint_add']);
+    }
+
+    public function test_add_rejects_a_host_with_a_scheme_or_metacharacters(): void
+    {
+        $this->actingAs($this->operator());
+
+        Livewire::test(Index::class)
+            ->set('host', 'https://evil.com/;rm -rf')
+            ->set('port', 443)
+            ->call('addEndpoint')
+            ->assertHasErrors('host');
+
+        $this->assertDatabaseCount('cert_endpoints', 0);
+    }
+
+    public function test_add_rejects_an_out_of_range_port(): void
+    {
+        $this->actingAs($this->operator());
+
+        Livewire::test(Index::class)
+            ->set('host', 'ok.example.com')
+            ->set('port', 99999)
+            ->call('addEndpoint')
+            ->assertHasErrors('port');
+    }
+
+    public function test_scan_checks_each_endpoint(): void
+    {
+        $this->actingAs($this->operator());
+        CertEndpoint::create(['host' => 'svc.example.com', 'port' => 443]);
+
+        $certs = Mockery::mock(CertService::class);
+        $certs->shouldReceive('check')->once()->andReturn(['ok' => true, 'subject' => 'svc.example.com', 'issuer' => 'LE', 'expiresAt' => time() + 5 * 86400, 'daysLeft' => 5]);
+        $certs->shouldReceive('status')->once()->with(5)->andReturn('critical');
+        app()->instance(CertService::class, $certs);
+
+        Livewire::test(Index::class)
+            ->call('scan')
+            ->assertOk()
+            ->assertSet('ready', true)
+            ->assertSee(__('certs.status_critical'));
+    }
+
+    public function test_operator_deletes_an_endpoint_via_a_confirmed_token(): void
+    {
+        $this->actingAs($this->operator());
+        $ep = CertEndpoint::create(['host' => 'gone.example.com', 'port' => 443]);
+        $token = ConfirmToken::issue('certEndpointDeleted', ['uuid' => $ep->uuid], 'cert.endpoint_delete', $ep->host, null);
+        ConfirmToken::confirm($token);
+
+        Livewire::test(Index::class)->call('deleteEndpoint', $token)->assertOk();
+
+        $this->assertDatabaseMissing('cert_endpoints', ['id' => $ep->id]);
+    }
+}