EuroStable EA works with any MetaTrader 4 broker, but performs optimally with ECN or RAW spread brokers offering tight EUR/USD spreads (ideally under 1.0 pips average) and fast execution speeds. Recommended brokers include IC Markets, Pepperstone, FP Markets, RoboForex, and Fusion Markets, all known for competitive spreads, reliable execution, and scalping-friendly policies. Key broker requirements: no restrictions on automated trading or scalping, minimal slippage during active trading hours, spreads consistently under 1.5 pips on EUR/USD, preferably 1:500 leverage (though 1:100+ works), and MT4 platform availability. Avoid market maker brokers with dealing desk execution, requotes, or artificial spread widening, as these negatively impact EA performance and profitability.