diff --git a/src/API/History/Index.php b/src/API/History/Index.php
index 948ca3e8..177ca9d0 100644
--- a/src/API/History/Index.php
+++ b/src/API/History/Index.php
@@ -135,7 +135,7 @@ final class Index
                 );
             }
 
-            if (preg_match('/[^a-zA-Z0-9_]/', $sField)) {
+            if (preg_match('/[^a-zA-Z0-9_\.]/', $sField)) {
                 return api_error(
                     'Invalid value for key query string expected value format is [a-zA-Z0-9_].',
                     HTTP_STATUS::HTTP_BAD_REQUEST
@@ -166,7 +166,7 @@ final class Index
                 );
             }
 
-            if (preg_match('/[^a-zA-Z0-9_]/', $sField)) {
+            if (preg_match('/[^a-zA-Z0-9_\.]/', $sField)) {
                 return api_error(
                     'Invalid value for key query string expected value format is [a-zA-Z0-9_].',
                     HTTP_STATUS::HTTP_BAD_REQUEST
diff --git a/src/API/System/Env.php b/src/API/System/Env.php
new file mode 100644
index 00000000..a74c1cbd
--- /dev/null
+++ b/src/API/System/Env.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\API\System;
+
+use App\Libs\Attributes\Route\Get;
+use App\Libs\HTTP_STATUS;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+
+#[Get(self::URL . '[/]', name: 'system.env')]
+final class Env
+{
+    public const URL = '%{api.prefix}/system/env';
+
+    public function __invoke(ServerRequestInterface $request, array $args = []): ResponseInterface
+    {
+        $response = [
+            '@self' => (string)$request->getUri()->withHost('')->withPort(0)->withScheme(''),
+            'data' => [],
+        ];
+
+        foreach (getenv() as $key => $val) {
+            if (false === str_starts_with($key, 'WS_') && $key !== 'HTTP_PORT') {
+                continue;
+            }
+            $response['data'][] = [
+                'key' => $key,
+                'value' => $val,
+            ];
+        }
+
+        return api_response($response, HTTP_STATUS::HTTP_OK, []);
+    }
+}