GSM Fusion API allows your web applications to communicate directly with the GSM Fusion. You now can order unlock codes, check if an order has been delivered, check your code’s history, Mep Types list, Account Information etc. directly your own website. -GSM Fusion API allows your web applications to communicate directly with the GSM Fusion. You now can order unlock codes, check if an order has been delivered, check your code’s history, Mep Types list, Account Information etc. directly　your own website.