Stock Scalping Community

Code: Select all

//@version=5
indicator("Scalp Invalidation - VWAP Hedge Alert", overlay=true)

// Calculate standard VWAP
vwapValue = ta.vwap(hlc3)
plot(vwapValue, color=color.blue, title="VWAP", linewidth=2)

// Invalidation Logic: Current candle closes below VWAP, previous was above
invalidationTrigger = close < vwapValue and close[1] >= vwapValue[1]

// Plot a visual marker on the chart
plotshape(invalidationTrigger, title="Hedge Trigger", style=shape.triangledown, location=location.abovebar, color=color.red, size=size.small)

// Construct JSON payload for webhook automation
if invalidationTrigger
    jsonPayload = '{"action": "deploy_hedge", "symbol": "' + syminfo.ticker + '", "price": ' + str.tostring(close) + '}'
    alert(jsonPayload, alert.freq_once_per_bar_close)

Code: Select all

using cAlgo.API;
using cAlgo.API.Indicators;

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class EMAScalpInvalidation : Indicator
    {
        private ExponentialMovingAverage _fastEma;
        private ExponentialMovingAverage _slowEma;

        [Parameter("Fast EMA", DefaultValue = 9)]
        public int FastPeriods { get; set; }

        [Parameter("Slow EMA", DefaultValue = 20)]
        public int SlowPeriods { get; set; }

        protected override void Initialize()
        {
            // Initialize moving averages
            _fastEma = Indicators.ExponentialMovingAverage(Bars.ClosePrices, FastPeriods);
            _slowEma = Indicators.ExponentialMovingAverage(Bars.ClosePrices, SlowPeriods);
        }

        public override void Calculate(int index)
        {
            // Only evaluate on a closed candle to avoid repainting false signals
            if (IsLastBar) return;
            
            // Check for the crossunder
            bool crossedBelow = _fastEma.Result[index - 1] < _slowEma.Result[index - 1] && 
                                _fastEma.Result[index - 2] >= _slowEma.Result[index - 2];

            if (crossedBelow)
            {
                string message = $"Scalp invalidation on {Symbol.Name} at {Bars.ClosePrices[index - 1]}. Deploy 1:1 CFD Hedge.";
                
                // Trigger on-screen alert
                Chart.DrawIcon("HedgeSignal" + index, ChartIconType.DownArrow, index - 1, Bars.HighPrices[index - 1], Color.Red);
                
                // Optional: Send email or trigger external API via .NET HttpClient
                Notifications.SendEmail("alerts@yourserver.com", "trader@yourserver.com", "Hedge Alert: " + Symbol.Name, message);
            }
        }
    }
}