Entry logic – The component of a strategy that defines when to open a trade. Entry logic encodes the signals or conditions that trigger a buy or sell. For example, a moving-average crossover strategy has entry logic “go long when the fast MA crosses above the slow MA”. In code, entry logic might be implemented in OnTick() (MQL5) or OnBar() (cAlgo) as if statements, or in Python backtesting as a signal function (e.g. using cerebro.add_signal()). Entry rules are crucial for automation: they could use indicators (RSI oversold, MACD buy), price patterns (breakout above resistance), or news events. In MetaTrader, one might program entry logic inside the OnTick() function, while in cTrader you’d use protected override void OnTick() in a Robot. In Backtrader, entry logic is often part of the next() method or managed by signal objects. Thorough entry logic ensures the robot systematically finds opportunities without human bias.

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