diff --git a/packages/php-storage-driver-common/generated/GPBMetadata/Proto/Credentials.php b/packages/php-storage-driver-common/generated/GPBMetadata/Proto/Credentials.php
index a3283edd8..751e3c561 100644
--- a/packages/php-storage-driver-common/generated/GPBMetadata/Proto/Credentials.php
+++ b/packages/php-storage-driver-common/generated/GPBMetadata/Proto/Credentials.php
@@ -17,8 +17,8 @@ public static function initOnce() {
         \GPBMetadata\Google\Protobuf\Any::initOnce();
         $pool->internalAddGeneratedFile(
             '
-€
-proto/credentials.proto!keboola.storageDriver.credentials"¹
+Ÿ
+proto/credentials.proto!keboola.storageDriver.credentials"Ø
 GenericBackendCredentials
 host
 
(	
 	principal 
(	
@@ -44,12 +44,13 @@ public static function initOnce() {
 database
 
(	
 
rest_endpoint 
(	
 api_key 
(	
-allow_insecure 
(k
+allow_insecure 
(‰

 SupabaseCredentialsMeta
 database
 
(	
 
rest_endpoint 
(	
 api_key 
(	
-allow_insecure 
(bproto3'
+allow_insecure 
(
+management_api_token 
(	bproto3'
         , true);
 
         static::$is_initialized = true;
diff --git a/packages/php-storage-driver-common/generated/GPBMetadata/Proto/Info.php b/packages/php-storage-driver-common/generated/GPBMetadata/Proto/Info.php
index 8bd92171b..b77df625c 100644
Binary files a/packages/php-storage-driver-common/generated/GPBMetadata/Proto/Info.php and b/packages/php-storage-driver-common/generated/GPBMetadata/Proto/Info.php differ
diff --git a/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Command/Info/ListSchemasCommand.php b/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Command/Info/ListSchemasCommand.php
new file mode 100644
index 000000000..cdaa9138c
--- /dev/null
+++ b/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Command/Info/ListSchemasCommand.php
@@ -0,0 +1,35 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: proto/info.proto
+
+namespace Keboola\StorageDriver\Command\Info;
+
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\GPBUtil;
+
+/**
+ **
+ * Command to list available schemas for external bucket registration.
+ * Returns user-accessible schema names excluding internal schemas.
+ *
+ * Generated from protobuf message <code>keboola.storageDriver.command.info.ListSchemasCommand</code>
+ */
+class ListSchemasCommand extends \Google\Protobuf\Internal\Message
+{
+
+    /**
+     * Constructor.
+     *
+     * @param array $data {
+     *     Optional. Data for populating the Message object.
+     *
+     * }
+     */
+    public function __construct($data = NULL) {
+        \GPBMetadata\Proto\Info::initOnce();
+        parent::__construct($data);
+    }
+
+}
+
diff --git a/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Command/Info/ListSchemasResponse.php b/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Command/Info/ListSchemasResponse.php
new file mode 100644
index 000000000..15b4a72bc
--- /dev/null
+++ b/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Command/Info/ListSchemasResponse.php
@@ -0,0 +1,65 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: proto/info.proto
+
+namespace Keboola\StorageDriver\Command\Info;
+
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\GPBUtil;
+
+/**
+ * Generated from protobuf message <code>keboola.storageDriver.command.info.ListSchemasResponse</code>
+ */
+class ListSchemasResponse extends \Google\Protobuf\Internal\Message
+{
+    /**
+     * List of user-accessible schema names
+     *
+     * Generated from protobuf field <code>repeated string schemas = 1;</code>
+     */
+    private $schemas;
+
+    /**
+     * Constructor.
+     *
+     * @param array $data {
+     *     Optional. Data for populating the Message object.
+     *
+     *     @type array<string>|\Google\Protobuf\Internal\RepeatedField $schemas
+     *           List of user-accessible schema names
+     * }
+     */
+    public function __construct($data = NULL) {
+        \GPBMetadata\Proto\Info::initOnce();
+        parent::__construct($data);
+    }
+
+    /**
+     * List of user-accessible schema names
+     *
+     * Generated from protobuf field <code>repeated string schemas = 1;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getSchemas()
+    {
+        return $this->schemas;
+    }
+
+    /**
+     * List of user-accessible schema names
+     *
+     * Generated from protobuf field <code>repeated string schemas = 1;</code>
+     * @param array<string>|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setSchemas($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::STRING);
+        $this->schemas = $arr;
+
+        return $this;
+    }
+
+}
+
diff --git a/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Credentials/GenericBackendCredentials/SupabaseCredentialsMeta.php b/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Credentials/GenericBackendCredentials/SupabaseCredentialsMeta.php
index 6d2d908eb..b3b04b995 100644
--- a/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Credentials/GenericBackendCredentials/SupabaseCredentialsMeta.php
+++ b/packages/php-storage-driver-common/generated/Keboola/StorageDriver/Credentials/GenericBackendCredentials/SupabaseCredentialsMeta.php
@@ -43,6 +43,12 @@ class SupabaseCredentialsMeta extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>bool allow_insecure = 4;</code>
      */
     protected $allow_insecure = false;
+    /**
+     * OAuth access token for Management API
+     *
+     * Generated from protobuf field <code>string management_api_token = 5;</code>
+     */
+    protected $management_api_token = '';
 
     /**
      * Constructor.
@@ -58,6 +64,8 @@ class SupabaseCredentialsMeta extends \Google\Protobuf\Internal\Message
      *           Supabase API key for REST API authentication
      *     @type bool $allow_insecure
      *           Allow HTTP for local testing (default: false)
+     *     @type string $management_api_token
+     *           OAuth access token for Management API
      * }
      */
     public function __construct($data = NULL) {
@@ -169,6 +177,32 @@ public function setAllowInsecure($var)
         return $this;
     }
 
+    /**
+     * OAuth access token for Management API
+     *
+     * Generated from protobuf field <code>string management_api_token = 5;</code>
+     * @return string
+     */
+    public function getManagementApiToken()
+    {
+        return $this->management_api_token;
+    }
+
+    /**
+     * OAuth access token for Management API
+     *
+     * Generated from protobuf field <code>string management_api_token = 5;</code>
+     * @param string $var
+     * @return $this
+     */
+    public function setManagementApiToken($var)
+    {
+        GPBUtil::checkString($var, True);
+        $this->management_api_token = $var;
+
+        return $this;
+    }
+
 }
 
 // Adding a class alias for backwards compatibility with the previous class name.
diff --git a/packages/php-storage-driver-common/proto/credentials.proto b/packages/php-storage-driver-common/proto/credentials.proto
index 2a4436b06..08f5d61bd 100644
--- a/packages/php-storage-driver-common/proto/credentials.proto
+++ b/packages/php-storage-driver-common/proto/credentials.proto
@@ -71,6 +71,7 @@ message GenericBackendCredentials {
     string rest_endpoint = 2; // PostgREST API URL (e.g., https://xxx.supabase.co)
     string api_key = 3; // Supabase API key for REST API authentication
     bool allow_insecure = 4; // Allow HTTP for local testing (default: false)
+    string management_api_token = 5; // OAuth access token for Management API
   }
 
   google.protobuf.Any meta = 5; // metadata specific for each backend
diff --git a/packages/php-storage-driver-common/proto/info.proto b/packages/php-storage-driver-common/proto/info.proto
index b63061833..764814a98 100644
--- a/packages/php-storage-driver-common/proto/info.proto
+++ b/packages/php-storage-driver-common/proto/info.proto
@@ -120,3 +120,15 @@ message TableInfo {
     }
   }
 }
+
+/**
+ * Command to list available schemas for external bucket registration.
+ * Returns user-accessible schema names excluding internal schemas.
+ */
+message ListSchemasCommand {
+  // Empty - no parameters needed, credentials provide connection info
+}
+
+message ListSchemasResponse {
+  repeated string schemas = 1;  // List of user-accessible schema names
+}