adapter credentials field

app/config/collections.php

@@ -1479,6 +1479,16 @@ $collections = [
                 'required' => true,
                 'array' => false,
             ],
+            [
+                '$collection' => Database::SYSTEM_COLLECTION_RULES,
+                'label' => 'Adapter Crednetials',
+                'key' => 'adapterCredentials',
+                'type' => Database::SYSTEM_VAR_TYPE_TEXT,
+                'default' => '',
+                'required' => false,
+                'array' => false,
+                'filter' => ['json']
+            ],
             [
                 '$collection' => Database::SYSTEM_COLLECTION_RULES,
                 'label' => 'Maximum File Size',

src/Appwrite/Utopia/Response/Model/Bucket.php

@@ -48,6 +48,12 @@ class Bucket extends Model
             'default' => '',
             'example' => 'local',
         ])
+        ->addRule('adapterCredentials', [
+            'type' => self::TYPE_STRING,
+            'description' => 'Storage adapter credentials.',
+            'default' => '',
+            'example' => ['key' => 'value'],
+        ])
         ->addRule('maximumFileSize', [
             'type' => self::TYPE_INTEGER,
             'description' => 'Maximum file size supported.',