How TradeClaw Works

// Signal confidence scoring — apps/web/app/lib/signal-generator.ts

function scoreSignal(indicators: AllIndicators, direction: 'BUY' | 'SELL'): number {
  let score = 0;

  const { rsi, macd, ema, bollinger, stochastic } = indicators;
  const isBuy = direction === 'BUY';

  // ── RSI component (max 20 pts) ──────────────────────────
  if (isBuy) {
    if (rsi.current < 30) score += 20;       // Oversold: strong BUY signal
    else if (rsi.current < 40) score += 15;  // Approaching oversold
    else if (rsi.current < 50) score += 8;   // Below midline
    else if (rsi.current > 70) score -= 10;  // Overbought: penalise BUY
  } else {
    if (rsi.current > 70) score += 20;       // Overbought: strong SELL signal
    else if (rsi.current > 60) score += 15;
    else if (rsi.current > 50) score += 8;
    else if (rsi.current < 30) score -= 10;
  }

  // ── MACD component (max 20 pts) ─────────────────────────
  const { histogram, current: macdCurrent } = macd;
  const histLen = histogram.length;
  if (histLen >= 2) {
    const histChanging = isBuy
      ? histogram[histLen-1] > histogram[histLen-2]   // histogram increasing
      : histogram[histLen-1] < histogram[histLen-2];
    if (histChanging) score += 10;
  }
  if (isBuy && macdCurrent.macd > macdCurrent.signal) score += 10;
  if (!isBuy && macdCurrent.macd < macdCurrent.signal) score += 10;

  // ── EMA trend alignment (max 20 pts) ────────────────────
  const { current: emaCurrent } = ema;
  const price = indicators.closes[indicators.closes.length - 1];
  if (isBuy) {
    if (price > emaCurrent.ema20) score += 7;
    if (price > emaCurrent.ema50) score += 7;
    if (emaCurrent.ema20 > emaCurrent.ema50) score += 6;  // golden cross
  } else {
    if (price < emaCurrent.ema20) score += 7;
    if (price < emaCurrent.ema50) score += 7;
    if (emaCurrent.ema20 < emaCurrent.ema50) score += 6;  // death cross
  }

  // ── Bollinger Bands (max 15 pts) ────────────────────────
  const { current: bb } = bollinger;
  if (isBuy && price < bb.lower) score += 15;   // Price at lower band
  else if (isBuy && price < bb.middle) score += 8;
  if (!isBuy && price > bb.upper) score += 15;  // Price at upper band
  else if (!isBuy && price > bb.middle) score += 8;

  // ── Stochastic (max 15 pts) ──────────────────────────────
  const { current: stoch } = stochastic;
  if (isBuy && stoch.k < 20) score += 15;    // Stochastic oversold
  else if (isBuy && stoch.k < 40) score += 8;
  if (!isBuy && stoch.k > 80) score += 15;   // Stochastic overbought
  else if (!isBuy && stoch.k > 60) score += 8;

  // ── Normalise to 0–100 ──────────────────────────────────
  const maxScore = 90;
  const rawPct = Math.max(0, Math.min(100, (score / maxScore) * 100));

  // Map to 50-98% range (we never claim 100% certainty)
  return 50 + rawPct * 0.48;
}

// RSI calculation — apps/web/app/lib/ta-engine.ts

function calculateRSI(closes: number[], period = 14): RSIResult {
  const result: number[] = new Array(closes.length).fill(NaN);
  if (closes.length < period + 1) return { values: result, current: NaN };

  let gains = 0, losses = 0;

  // First RSI: simple average of first period
  for (let i = 1; i <= period; i++) {
    const delta = closes[i] - closes[i - 1];
    if (delta > 0) gains += delta;
    else losses -= delta;
  }

  let avgGain = gains / period;
  let avgLoss = losses / period;

  result[period] = avgLoss === 0 ? 100 : 100 - (100 / (1 + avgGain / avgLoss));

  // Wilder's smoothing for subsequent values
  for (let i = period + 1; i < closes.length; i++) {
    const delta = closes[i] - closes[i - 1];
    const gain = delta > 0 ? delta : 0;
    const loss = delta < 0 ? -delta : 0;
    avgGain = (avgGain * (period - 1) + gain) / period;
    avgLoss = (avgLoss * (period - 1) + loss) / period;
    result[i] = avgLoss === 0 ? 100 : 100 - (100 / (1 + avgGain / avgLoss));
  }

  return { values: result, current: result[result.length - 1] };
}

// Take-profit / stop-loss calculation — signal-generator.ts

function calculateTPSL(
  direction: 'BUY' | 'SELL',
  entry: number,
  highs: number[],
  lows: number[],
  atr: number,
) {
  const recentHighs = highs.slice(-20).sort((a, b) => b - a);
  const recentLows = lows.slice(-20).sort((a, b) => a - b);

  const resistance = recentHighs[2];  // 3rd highest high = resistance
  const support = recentLows[2];      // 3rd lowest low = support

  if (direction === 'BUY') {
    // TP: nearest resistance above entry, or ATR-based fallback
    const tp1 = resistance > entry
      ? resistance
      : entry + atr * 1.5;
    // SL: nearest support below entry, or ATR-based fallback
    const sl = support < entry
      ? support
      : entry - atr * 1.0;
    return { tp1, sl, rr: (tp1 - entry) / (entry - sl) };
  } else {
    const tp1 = support < entry
      ? support
      : entry - atr * 1.5;
    const sl = resistance > entry
      ? resistance
      : entry + atr * 1.0;
    return { tp1, sl, rr: (entry - tp1) / (sl - entry) };
  }
}