DSL API — ta.ema(bars, period) ta.sma(bars, period) ta.rsi(bars, period) ta.macd(bars, fast, slow, signal) ta.bollinger(bars, period, std) ta.atr(bars, period) ta.structure(bars, lookback) ta.squeeze(bars) ta.crossover(a, b) ta.crossunder(a, b) ta.highest(src, n) ta.lowest(src, n) — indicators support .current .previous .slope .acceleration .crossed_above(x) .crossed_below(x) and elementwise + - * / > < >= <= against another series or a constant (repeated calls with the same bars are auto-cached per run) — ctx.window(n) ctx.timeframe("1h").bars for higher-timeframe context — stats.mean/std/percentile/zscore(series), Score().add(name, points) Signal.buy(size=1) Signal.sell(size=1) ctx.bars ctx.position ctx.state ctx.sentiment_score — trade management (backtester-enforced): Signal.buy().stop_atr(1.5).target_atr(3).trail_atr(2).break_even(1).timeout(40) b.open b.high b.low b.volume ctx.volumes()