Stochastic RSI Crossover - Eterna MCP

//@version=5
strategy("Stochastic RSI Crossover - Eterna MCP", 
         shorttitle="Stoch RSI",
         overlay=false,
         default_qty_type=strategy.percent_of_equity,
         default_qty_value=100,
         initial_capital=1000)

// ============================================
// PARAMETERS
// ============================================
rsiLength = input.int(14, "RSI Length", minval=1)
stochLength = input.int(14, "Stochastic Length", minval=1)
smoothK = input.int(3, "K Smoothing", minval=1)
smoothD = input.int(3, "D Smoothing", minval=1)
upperLevel = input.int(80, "Overbought Level", minval=50, maxval=100)
lowerLevel = input.int(20, "Oversold Level", minval=0, maxval=50)
leverageSize = input.float(5.0, "Leverage", minval=1, maxval=100)
positionSize = input.float(0.01, "Position Size", minval=0.001, maxval=1)

// ============================================
// STOCHASTIC RSI CALCULATION
// ============================================
rsi = ta.rsi(close, rsiLength)
stochRSI = ta.stoch(rsi, rsi, rsi, stochLength)
k = ta.sma(stochRSI, smoothK)
d = ta.sma(k, smoothD)

// ============================================
// SIGNAL GENERATION
// ============================================
// Bullish: K crosses above D in oversold zone
bullishCross = ta.crossover(k, d) and k < lowerLevel

// Bearish: K crosses below D in overbought zone
bearishCross = ta.crossunder(k, d) and k > upperLevel

// Additional confirmation: momentum direction
bullishMomentum = k > k[1] and d > d[1]
bearishMomentum = k < k[1] and d < d[1]

// ============================================
// STRATEGY LOGIC
// ============================================
if bullishCross and strategy.position_size == 0
    strategy.entry("Long", strategy.long)
    alert('{"action":"buy","symbol":"' + syminfo.ticker + '","size":' + str.tostring(positionSize) + ',"leverage":' + str.tostring(leverageSize) + '}', alert.freq_once_per_bar_close)

if bearishCross and strategy.position_size == 0
    strategy.entry("Short", strategy.short)
    alert('{"action":"sell","symbol":"' + syminfo.ticker + '","size":' + str.tostring(positionSize) + ',"leverage":' + str.tostring(leverageSize) + '}', alert.freq_once_per_bar_close)

// Exit conditions
if bearishCross and strategy.position_size > 0
    strategy.close("Long")

if bullishCross and strategy.position_size < 0
    strategy.close("Short")

// ============================================
// PLOTTING
// ============================================
plot(k, "K", color=color.blue, linewidth=2)
plot(d, "D", color=color.orange, linewidth=2)
hline(upperLevel, "Overbought", color=color.red, linestyle=hline.style_dashed)
hline(lowerLevel, "Oversold", color=color.green, linestyle=hline.style_dashed)
hline(50, "Midline", color=color.gray, linestyle=hline.style_dotted)

bgcolor(bullishCross ? color.new(color.green, 90) : na)
bgcolor(bearishCross ? color.new(color.red, 90) : na)

plotshape(bullishCross, "Buy Signal", shape.triangleup, location.bottom, color.green, size=size.small)
plotshape(bearishCross, "Sell Signal", shape.triangledown, location.top, color.red, size=size.small)