Convert to simpler API

Author: gusdecool

test/Api/MarketCatalogApiTest.php

@@ -34,5 +34,6 @@ public function testSearchItems(): void
 
         $this->assertIsInt($result['took']);
         $this->assertIsArray($result['matches']);
+        $this->assertTrue(count($result['matches']) > 0);
     }
 }