diff --git a/src/Metadata/Exception/BadRequestException.php b/src/Metadata/Exception/BadRequestException.php
new file mode 100644
index 00000000000..414a510b228
--- /dev/null
+++ b/src/Metadata/Exception/BadRequestException.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Metadata\Exception;
+
+/**
+ * Framework-agnostic 400 Bad Request, mapped by both the Symfony and Laravel error handlers.
+ */
+class BadRequestException extends \RuntimeException implements ExceptionInterface, HttpExceptionInterface
+{
+    public function getStatusCode(): int
+    {
+        return 400;
+    }
+
+    /**
+     * @return array<string, string>
+     */
+    public function getHeaders(): array
+    {
+        return [];
+    }
+}
diff --git a/tests/Functional/McpTest.php b/tests/Functional/McpTest.php
index 5cff5220061..7794f671e5e 100644
--- a/tests/Functional/McpTest.php
+++ b/tests/Functional/McpTest.php
@@ -470,7 +470,7 @@ public function testToolsList(): void
                                 'id' => ['type' => 'integer'],
                                 'title' => ['type' => 'string'],
                                 'isbn' => ['type' => 'string'],
-                                'status' => ['type' => ['string', 'null']],
+                                'status' => ['anyOf' => [['type' => 'string'], ['type' => 'null']]],
                             ],
                         ],
                     ],