We offer FIX API connection to our large private clients and institutional clients. The minimum account balance required is 500,000 £$€ and the required minimum monthly commission fee generated should be 5,000 £$€. We are not offering a demo version. If a client generates 5,000 £$€ or more in monthly commissions, then we do not charge any fees for using this service. However, if the monthly commissions are less than 5,000 £$€, then a fee applies (5,000 £$€ – amount of commission generated).