diff --git a/web/admin/domain.php b/web/admin/domain.php
index bc89eda..b461773 100644
--- a/web/admin/domain.php
+++ b/web/admin/domain.php
@@ -6,7 +6,7 @@ require_once __DIR__ . '/../includes/layout.php';
 admin_check();
 
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
-    $fields = ['domain', 'hostname', 'smtp_port', 'submission_port', 'imap_port', 'imaps_port', 'smb_workgroup'];
+    $fields = ['domain', 'hostname', 'smtp_port', 'submission_port', 'imap_port', 'imaps_port', 'smb_workgroup', 'vision_license_key'];
     foreach ($fields as $f) {
         $val = trim($_POST[$f] ?? '');
         if ($val !== '') cfg_set($f, $val);
@@ -85,6 +85,32 @@ html_navbar('domain');
             </div>
         </div>
 
+        <div class="card shadow-sm mb-4">
+            <div class="card-header fw-semibold"><i class="bi bi-shield-check me-2"></i>Licence Vision</div>
+            <div class="card-body">
+                <?php
+                require_once __DIR__ . '/../includes/vision.php';
+                $lic = vision_check();
+                $licClass = $lic['valid'] ? 'success' : 'danger';
+                $licIcon  = $lic['valid'] ? 'check-circle-fill' : 'x-circle-fill';
+                $licMsg   = $lic['valid']
+                    ? ('Valide — ' . htmlspecialchars($lic['client'] ?? '') . (!empty($lic['expires']) ? ' — expire le ' . date('d/m/Y', strtotime($lic['expires'])) : ''))
+                    : htmlspecialchars($lic['msg'] ?? 'Non valide');
+                if (!empty($lic['degraded'])) $licClass = 'warning';
+                ?>
+                <div class="alert alert-<?= $licClass ?> py-2 mb-3">
+                    <i class="bi bi-<?= $licIcon ?> me-2"></i><?= $licMsg ?>
+                </div>
+                <div class="col-md-8">
+                    <label class="form-label">Clé de licence</label>
+                    <input type="text" name="vision_license_key" class="form-control font-monospace"
+                           value="<?= htmlspecialchars(cfg('vision_license_key', '')) ?>"
+                           placeholder="COPYDEV-XXXXXXXX-XXXXXXXX-XXXXXXXX">
+                    <div class="form-text">Générée depuis <strong>Vision</strong> → onglet Licences → produit CopyMail.</div>
+                </div>
+            </div>
+        </div>
+
         <div class="d-flex gap-2">
             <button type="submit" class="btn btn-primary">
                 <i class="bi bi-floppy-fill me-1"></i>Sauvegarder & Appliquer
diff --git a/web/admin/index.php b/web/admin/index.php
index dc0dc8d..f01cfbf 100644
--- a/web/admin/index.php
+++ b/web/admin/index.php
@@ -2,8 +2,10 @@
 require_once __DIR__ . '/../includes/db.php';
 require_once __DIR__ . '/../includes/auth.php';
 require_once __DIR__ . '/../includes/layout.php';
+require_once __DIR__ . '/../includes/vision.php';
 
 admin_check();
+$licence = vision_check();
 
 $services = [
     'postfix'  => ['Postfix (SMTP)',  'bi-envelope-at'],
@@ -38,6 +40,23 @@ html_navbar('status');
 <div class="container-fluid">
     <h5 class="mb-4"><i class="bi bi-activity me-2"></i>Tableau de bord</h5>
 
+    <!-- Statut licence -->
+    <?php
+    $lClass = $licence['valid'] ? 'success' : (isset($licence['unconfigured']) ? 'secondary' : 'danger');
+    if (!empty($licence['degraded'])) $lClass = 'warning';
+    $lIcon  = $licence['valid'] ? 'shield-check' : 'shield-x';
+    $lText  = $licence['valid']
+        ? 'Licence valide — ' . htmlspecialchars($licence['client'] ?? 'CopyMail')
+          . (!empty($licence['expires']) ? ' — expire le ' . date('d/m/Y', strtotime($licence['expires'])) : '')
+        : htmlspecialchars($licence['msg'] ?? 'Licence non valide');
+    ?>
+    <div class="alert alert-<?= $lClass ?> d-flex align-items-center justify-content-between py-2 mb-4">
+        <span><i class="bi bi-<?= $lIcon ?> me-2"></i><?= $lText ?></span>
+        <?php if (!$licence['valid'] || isset($licence['unconfigured'])): ?>
+            <a href="/admin/domain.php" class="btn btn-sm btn-outline-<?= $lClass ?>">Configurer</a>
+        <?php endif; ?>
+    </div>
+
     <!-- Stats -->
     <div class="row g-3 mb-4">
         <div class="col-sm-4">
diff --git a/web/includes/vision.php b/web/includes/vision.php
index 45365a0..58751ec 100644
--- a/web/includes/vision.php
+++ b/web/includes/vision.php
@@ -1,76 +1,65 @@
 <?php
 /**
- * vision.php — Intégration Vision (licence + config)
- * CopyMail s'enregistre auprès de Vision et vérifie sa licence.
- * À compléter avec l'endpoint et le format exact de l'API Vision.
+ * vision.php — Intégration Vision (licence)
+ * API : GET https://vision.copydev.fr/api/license.php?key=<key>&machine_id=<id>&hostname=<host>
  */
 
-define('VISION_API_URL', 'https://vision.copydev.fr/api');
-define('VISION_APP_ID',  'copymail');
+define('VISION_LICENSE_URL', 'https://vision.copydev.fr/api/license.php');
+define('VISION_PRODUCT',     'copymail');
+
+function vision_machine_id(): string {
+    $id = cfg('vision_machine_id', '');
+    if (!$id) {
+        $id = strtolower('copymail-' . bin2hex(random_bytes(6)));
+        cfg_set('vision_machine_id', $id);
+    }
+    return $id;
+}
 
 function vision_check(): array {
-    $keyprog = cfg('vision_keyprog', '');
-    if (!$keyprog) {
-        return ['valid' => false, 'msg' => 'Clé Vision non configurée.'];
+    $key = cfg('vision_license_key', '');
+    if (!$key) {
+        return ['valid' => false, 'msg' => 'Licence non configurée.', 'unconfigured' => true];
     }
 
-    $payload = [
-        'app'      => VISION_APP_ID,
-        'keyprog'  => $keyprog,
-        'version'  => cfg('app_version', '1.0'),
-        'hostname' => cfg('hostname', gethostname()),
-        'ip'       => $_SERVER['SERVER_ADDR'] ?? '',
-    ];
+    $url = VISION_LICENSE_URL . '?' . http_build_query([
+        'key'        => $key,
+        'machine_id' => vision_machine_id(),
+        'hostname'   => cfg('hostname', gethostname()),
+    ]);
 
     $ctx = stream_context_create(['http' => [
-        'method'        => 'POST',
-        'header'        => "Content-Type: application/json\r\n",
-        'content'       => json_encode($payload),
+        'method'        => 'GET',
         'timeout'       => 5,
         'ignore_errors' => true,
     ]]);
 
-    $resp = @file_get_contents(VISION_API_URL . '/check', false, $ctx);
+    $resp = @file_get_contents($url, false, $ctx);
+
     if ($resp === false) {
-        return ['valid' => true, 'msg' => 'Vision injoignable — mode dégradé.'];
+        // Vision injoignable — on vérifie le délai offline autorisé
+        $lastOk   = (int)cfg('vision_last_ok', '0');
+        $timeout  = (int)cfg('vision_offline_timeout', '72');
+        $elapsed  = (time() - $lastOk) / 3600;
+        if ($lastOk && $elapsed < $timeout) {
+            return ['valid' => true, 'msg' => "Vision injoignable (mode dégradé, {$timeout}h max)", 'degraded' => true];
+        }
+        return ['valid' => false, 'msg' => 'Vision injoignable et délai offline dépassé.'];
     }
 
     $data = json_decode($resp, true);
-    return [
-        'valid'  => (bool)($data['valid'] ?? false),
-        'msg'    => $data['message'] ?? '',
-        'config' => $data['config'] ?? [],
-    ];
-}
 
-function vision_push_config(array $config): void {
-    // Applique la config reçue depuis Vision en BDD
-    foreach ($config as $key => $value) {
-        cfg_set($key, $value);
+    if (!empty($data['valid'])) {
+        cfg_set('vision_last_ok', (string)time());
+        cfg_set('vision_offline_timeout', (string)($data['offline_timeout_hours'] ?? 72));
+        return [
+            'valid'   => true,
+            'client'  => $data['client'] ?? '',
+            'product' => $data['product'] ?? '',
+            'expires' => $data['expires_at'] ?? null,
+            'devices' => $data['max_devices'] ?? 1,
+        ];
     }
-}
-
-function vision_register(): bool {
-    $keyprog = cfg('vision_keyprog', '');
-    if (!$keyprog) return false;
-
-    $payload = [
-        'app'      => VISION_APP_ID,
-        'keyprog'  => $keyprog,
-        'hostname' => cfg('hostname', gethostname()),
-        'domain'   => cfg('domain', ''),
-        'version'  => cfg('app_version', '1.0'),
-        'accounts' => (int)db()->query('SELECT COUNT(*) FROM accounts WHERE active=1')->fetchColumn(),
-    ];
-
-    $ctx = stream_context_create(['http' => [
-        'method'        => 'POST',
-        'header'        => "Content-Type: application/json\r\n",
-        'content'       => json_encode($payload),
-        'timeout'       => 5,
-        'ignore_errors' => true,
-    ]]);
-
-    $resp = @file_get_contents(VISION_API_URL . '/register', false, $ctx);
-    return $resp !== false;
+
+    return ['valid' => false, 'msg' => $data['message'] ?? 'Licence invalide.'];
 }