Summary: Gold Structural Flow EA is an MQL4 expert advisor for XAUUSD that identifies structural breaks using swing high/low analysis, applies ADX trend strength filters and ATR volatility guards, with multi-timeframe confirmation for stable H4 operation.




Gold Structural Flow EA is designed specifically for gold (XAUUSD) using a structural analysis approach that mimics institutional order flow detection. Unlike grid or martingale systems that blindly average into losing positions, this EA identifies key structural breaks — when price clears established swing highs or lows on higher timeframes — and enters in the direction of the breakout. The strategy uses a triple-filter mechanism: structural confirmation (break of recent 20-bar high/low), trend strength validation (ADX > 25), and volatility adaptation (ATR compared to 50-period average). The EA limits exposure to a single direction at a time, uses fixed lot sizes without progression, and includes a daily equity drawdown limit and Friday close protection.

Recommended Timeframe: H4
Trading Logic:
  • Structural Break Detection: Identify the highest high and lowest low of the last 20 candles. A breakout occurs when price closes beyond these levels.

  • Trend Strength Filter: ADX(14) must exceed a configurable threshold (default 25) to ensure the market is trending.

  • Volatility Guard: Current ATR(14) should not exceed 2.0 times the 50-period average ATR.

  • Multi-Timeframe Confirmation (optional): Higher timeframe EMA (H4 period 200) provides additional directional bias.

  • Risk Management: Fixed ATR-based stop loss (1.5x ATR), take profit at 2.5x ATR, trailing stop after 1x ATR profit.


    • ``mql4
    //+------------------------------------------------------------------+
    //| GoldStructuralFlowEA.mq4 |
    //+------------------------------------------------------------------+
    #property copyright ""
    #property link ""
    #property version "1.00"
    #property strict

    //--- input parameters with comments
    input double LotSize = 0.01; // Fixed lot size (0.01 for XAUUSD)
    input int StructureLookback = 20; // Bars for swing high/low detection
    input int ADXPeriod = 14; // ADX period for trend strength
    input int ADXThreshold = 25; // Minimum ADX value for trending market
    input int ATRPeriod = 14; // ATR period for volatility
    input double ATRMaxMultiplier = 2.0; // Max ATR vs average ATR (volatility guard)
    input double ATRStopMultiplier = 1.5; // Stop loss as multiple of ATR
    input double ATRTakeMultiplier = 2.5; // Take profit as multiple of ATR
    input double TrailingStartATR = 1.0; // Trailing activates at profit (x ATR)
    input double TrailingStepATR = 0.5; // Trailing step (x ATR)
    input bool UseHTFTrendFilter = true; // Enable H4 200EMA trend filter
    input int MagicNumber = 202421; // Unique EA identifier
    input int MaxSpread = 35; // Maximum allowed spread in points
    input double DailyLossLimit = 5.0; // Daily loss limit as percentage
    input bool UseFridayClose = true; // Close trades before Friday 21:00 GMT

    //--- global variables
    double dailyStartBalance = 0;
    datetime lastBarTime = 0;
    bool fridayCloseExecuted = false;
    double avgATR = 0;
    double structureHigh = 0;
    double structureLow = 0;

    //+------------------------------------------------------------------+
    //| Expert initialization function |
    //+------------------------------------------------------------------+
    int OnInit()
    {
    dailyStartBalance = AccountBalance();
    lastBarTime = 0;
    fridayCloseExecuted = false;
    avgATR = iATR(Symbol(), PERIOD_H4, ATRPeriod, 1);
    if(avgATR <= 0) avgATR = 300 Point;
    return(INIT_SUCCEEDED);
    }

    //+------------------------------------------------------------------+
    //| Expert deinitialization function |
    //+------------------------------------------------------------------+
    void OnDeinit(const int reason)
    {
    Comment("");
    }

    //+------------------------------------------------------------------+
    //| Detect structural break levels (swing high/low) |
    //+------------------------------------------------------------------+
    void DetectStructureLevels()
    {
    int highestIdx = iHighest(Symbol(), PERIOD_H4, MODE_HIGH, StructureLookback, 1);
    int lowestIdx = iLowest(Symbol(), PERIOD_H4, MODE_LOW, StructureLookback, 1);

    if(highestIdx > 0)
    structureHigh = iHigh(Symbol(), PERIOD_H4, highestIdx);
    if(lowestIdx > 0)
    structureLow = iLow(Symbol(), PERIOD_H4, lowestIdx);
    }

    //+------------------------------------------------------------------+
    //| Get higher timeframe trend direction (H4 200EMA) |
    //+------------------------------------------------------------------+
    int GetHTFTrend()
    {
    if(!UseHTFTrendFilter) return 0;
    double closeH4 = iClose(Symbol(), PERIOD_H4, 1);
    double emaH4 = iMA(Symbol(), PERIOD_H4, 200, 0, MODE_EMA, PRICE_CLOSE, 1);
    if(closeH4 > emaH4) return 1;
    if(closeH4 < emaH4) return -1;
    return 0;
    }

    //+------------------------------------------------------------------+
    //| Check ADX trend strength |
    //+------------------------------------------------------------------+
    bool IsTrendStrong()
    {
    double adx = iADX(Symbol(), PERIOD_H4, ADXPeriod, PRICE_CLOSE, MODE_MAIN, 1);
    return (adx >= ADXThreshold);
    }

    //+------------------------------------------------------------------+
    //| Check structural breakout entry |
    //+------------------------------------------------------------------+
    bool CheckStructuralBreakout(int direction, double &entryPrice, double &sl, double &tp, double atr)
    {
    if(direction == 0) return false;

    double close1 = iClose(Symbol(), PERIOD_H4, 1);

    // Bullish breakout: close above structure high
    if(direction == 1 && structureHigh > 0)
    {
    if(close1 > structureHigh)
    {
    entryPrice = Ask;
    sl = entryPrice - (atr     ATRStopMultiplier);
    tp = entryPrice + (atr ATRTakeMultiplier);
    return true;
    }
    }
    // Bearish breakout: close below structure low
    else if(direction == -1 && structureLow > 0)
    {
    if(close1 < structureLow)
    {
    entryPrice = Bid;
    sl = entryPrice + (atr     ATRStopMultiplier);
    tp = entryPrice - (atr ATRTakeMultiplier);
    return true;
    }
    }
    return false;
    }

    //+------------------------------------------------------------------+
    //| Manage trailing stop for open position |
    //+------------------------------------------------------------------+
    void ManageTrailingStop(double atr)
    {
    for(int i = OrdersTotal()-1; i >= 0; i--)
    {
    if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
    {
    if(OrderSymbol() == Symbol() && OrderMagicNumber() == MagicNumber)
    {
    double activate = atr     TrailingStartATR;
    double step = atr TrailingStepATR;
    double newSL = 0;

    if(OrderType() == OP_BUY)
    {
    double profit = Bid - OrderOpenPrice();
    if(profit >= activate)
    {
    newSL = Bid - step;
    if(newSL > OrderStopLoss())
    OrderModify(OrderTicket(), OrderOpenPrice(), newSL, OrderTakeProfit(), 0, clrNONE);
    }
    }
    else if(OrderType() == OP_SELL)
    {
    double profit = OrderOpenPrice() - Ask;
    if(profit >= activate)
    {
    newSL = Ask + step;
    if(newSL < OrderStopLoss() || OrderStopLoss() == 0)
    OrderModify(OrderTicket(), OrderOpenPrice(), newSL, OrderTakeProfit(), 0, clrNONE);
    }
    }
    break;
    }
    }
    }
    }

    //+------------------------------------------------------------------+
    //| Expert tick function |
    //+------------------------------------------------------------------+
    void OnTick()
    {
    // Daily equity protection
    double currentEquity = AccountEquity();
    double lossPercent = (dailyStartBalance - currentEquity) / dailyStartBalance     100;
    if(lossPercent >= DailyLossLimit)
    {
    Comment("Daily loss limit reached. No new trades.");
    return;
    }

    // Friday close before weekend
    if(UseFridayClose && !fridayCloseExecuted)
    {
    datetime currentTime = TimeCurrent();
    if(TimeDayOfWeek(currentTime) == 5 && TimeHour(currentTime) >= 21)
    {
    CloseAllOrders();
    fridayCloseExecuted = true;
    return;
    }
    if(TimeDayOfWeek(currentTime) != 5)
    fridayCloseExecuted = false;
    }

    // Spread filter
    if(MarketInfo(Symbol(), MODE_SPREAD) > MaxSpread)
    {
    Comment("Spread too high: ", MarketInfo(Symbol(), MODE_SPREAD));
    return;
    }

    // New bar logic (H4)
    if(Time[0] == lastBarTime)
    return;
    lastBarTime = Time[0];

    // Update structure levels on each new bar
    DetectStructureLevels();

    // Manage existing position
    int posCount = CountPositions();
    if(posCount > 0)
    {
    double atr = iATR(Symbol(), PERIOD_H4, ATRPeriod, 1);
    if(atr > 0) ManageTrailingStop(atr);
    return;
    }

    // Get ATR for volatility filtering
    double atr = iATR(Symbol(), PERIOD_H4, ATRPeriod, 1);
    if(atr > 0) avgATR = (avgATR 0.95) + (atr 0.05);

    // Volatility guard: skip if ATR too high
    if(atr > avgATR * ATRMaxMultiplier && avgATR > 0)
    {
    Comment("Volatility too high. ATR: ", atr);
    return;
    }

    // Check ADX trend strength
    if(!IsTrendStrong())
    {
    Comment("ADX below threshold. No strong trend.");
    return;
    }

    // Determine allowed trading direction
    int allowedDirection = 0;
    int htfTrend = GetHTFTrend();

    // Without HTF filter, allow both directions if structure breaks
    if(!UseHTFTrendFilter)
    {
    double close1 = iClose(Symbol(), PERIOD_H4, 1);
    if(close1 > structureHigh) allowedDirection = 1;
    else if(close1 < structureLow) allowedDirection = -1;
    }
    else
    {
    if(htfTrend == 1 && structureHigh > 0)
    allowedDirection = 1;
    else if(htfTrend == -1 && structureLow > 0)
    allowedDirection = -1;
    }

    if(allowedDirection == 0)
    {
    Comment("No valid structural setup");
    return;
    }

    // Check structural breakout entry
    double entryPrice = 0, sl = 0, tp = 0;
    if(CheckStructuralBreakout(allowedDirection, entryPrice, sl, tp, atr))
    {
    int cmd = (allowedDirection == 1) ? OP_BUY : OP_SELL;
    int ticket = OrderSend(Symbol(), cmd, LotSize, entryPrice, 5, sl, tp, "Structural Flow", MagicNumber, 0, clrNONE);
    if(ticket < 0)
    Print("OrderSend failed: ", GetLastError());
    else
    Print("Structural breakout entry opened. Direction: ", cmd==OP_BUY?"BUY":"SELL");
    }
    }

    //+------------------------------------------------------------------+
    //| Count open positions with this MagicNumber |
    //+------------------------------------------------------------------+
    int CountPositions()
    {
    int count = 0;
    for(int i = OrdersTotal()-1; i >= 0; i--)
    {
    if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
    {
    if(OrderSymbol() == Symbol() && OrderMagicNumber() == MagicNumber)
    count++;
    }
    }
    return count;
    }

    //+------------------------------------------------------------------+
    //| Close all orders for this symbol and magic |
    //+------------------------------------------------------------------+
    void CloseAllOrders()
    {
    for(int i = OrdersTotal()-1; i >= 0; i--)
    {
    if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
    {
    if(OrderSymbol() == Symbol() && OrderMagicNumber() == MagicNumber)
    {
    if(OrderType() == OP_BUY)
    OrderClose(OrderTicket(), OrderLots(), Bid, 5, clrNONE);
    else if(OrderType() == OP_SELL)
    OrderClose(OrderTicket(), OrderLots(), Ask, 5, clrNONE);
    }
    }
    }
    }
    //+------------------------------------------------------------------+
    ``
    Reference: Original MQL4 code inspired by structural analysis principles observed in recent gold trading systems.
    Disclaimer: Gold trading involves significant risk due to high volatility and leverage. This EA is provided as-is without any guarantee of profit. Test thoroughly on a demo account for at least 3 months before live deployment. Past performance does not guarantee future results.