diff --git a/scripting/shopsms_service_credits.sp b/scripting/shopsms_service_credits.sp
new file mode 100644
index 0000000..2f56699
--- /dev/null
+++ b/scripting/shopsms_service_credits.sp
@@ -0,0 +1,38 @@
+#pragma semicolon 1
+#pragma newdecls required
+#include <sourcemod>
+#include <shopsms>
+
+#define      CREDITS_BY_NATIVE       -1
+
+/**
+ *      Gives certain amount of credits to the player
+ *      -
+ *      @param client                   Client index
+ *      @param amount                   Amount to give
+ *      @param by_who                   Optional param to set by who the credits being given from
+ *      -
+ *      @return New amount of credits
+*/
+native int Shop_GiveClientCredits(int client, int amount, int by_who = CREDITS_BY_NATIVE);
+
+#define SERVICE_ID "credits"
+
+public Plugin myinfo =
+{
+	name = "Shop SMS: Service: Credits",
+	author = "SeeK",
+	description = "ShopSMS's extension that allow players to purchase credits.",
+	version = VERSION,
+	url = "https://www.sklep-sms.pl/"
+};
+
+public void OnPluginStart()
+{
+	ShopRegisterService(SERVICE_ID);
+}
+
+public void ShopServicePurchased(int client, int quantity)
+{
+	Shop_GiveClientCredits(client, quantity);
+}