diff --git a/controllers/BaseApiController.php b/controllers/BaseApiController.php
index f6755d24..37171a1e 100644
--- a/controllers/BaseApiController.php
+++ b/controllers/BaseApiController.php
@@ -2,10 +2,16 @@
 
 namespace Grocy\Controllers;
 
+use LessQL\Result;
+
 class BaseApiController extends BaseController
 {
 	protected $OpenApiSpec = null;
 
+	const PATTERN_FIELD = '[A-Za-z_][A-Za-z0-9_]+';
+	const PATTERN_OPERATOR = '!?(=|~|<|>|(>=)|(<=))';
+	const PATTERN_VALUE = '[A-Za-z_0-9.]+';
+
 	public function __construct(\DI\Container $container)
 	{
 		parent::__construct($container);
@@ -29,6 +35,68 @@ class BaseApiController extends BaseController
 		]);
 	}
 
+	public function FilteredApiResponse(\Psr\Http\Message\ResponseInterface $response, Result $data, array $query)
+	{
+		$data = $this->queryData($data, $query);
+		return $this->ApiResponse($response, $data);
+	}
+
+	protected function queryData(Result $data, array $query)
+	{
+		if (isset($query['query']))
+			$data = $this->filter($data, $query['query']);
+		if (isset($query['limit']))
+			$data = $data->limit(intval($query['limit']), intval($query['offset'] ?? 0));
+		if (isset($query['order']))
+			$data = $data->orderBy($query['order']);
+		return $data;
+	}
+
+	protected function filter(Result $data, array $query): Result
+	{
+		foreach ($query as $q) {
+			$matches = array();
+			preg_match('/(?P<field>' . self::PATTERN_FIELD . ')'
+				. '(?P<op>' . self::PATTERN_OPERATOR . ')'
+				. '(?P<value>' . self::PATTERN_VALUE . ')/',
+				$q, $matches
+			);
+			error_log(var_export($matches, true));
+			switch ($matches['op']) {
+				case '=':
+					$data = $data->where($matches['field'], $matches['value']);
+					break;
+				case '!=':
+					$data = $data->whereNot($matches['field'], $matches['value']);
+					break;
+				case '~':
+					$data = $data->where($matches['field'] . ' LIKE ?', '%' . $matches['value'] . '%');
+					break;
+				case '!~':
+					$data = $data->where($matches['field'] . ' NOT LIKE ?', '%' . $matches['value'] . '%');
+					break;
+				case '!>=':
+				case '<':
+					$data = $data->where($matches['field'] . ' < ?', $matches['value']);
+					break;
+				case '!<=':
+				case '>':
+					$data = $data->where($matches['field'] . ' > ?', $matches['value']);
+					break;
+				case '!<':
+				case '>=':
+					$data = $data->where($matches['field'] . ' >= ?', $matches['value']);
+					break;
+				case '!>':
+				case '<=':
+					$data = $data->where($matches['field'] . ' <= ?', $matches['value']);
+					break;
+
+			}
+		}
+		return $data;
+	}
+
 	protected function getOpenApispec()
 	{
 		if ($this->OpenApiSpec == null)