Wickra BacktestBacktest and live — byte-identical.

The strategy is JSON, not code ​

A StrategySpec names the symbol, timeframe, the indicators to compute, the entry/exit rules over them, plus sizing, costs and risk. The same spec runs identically in a backtest and, fed live bars, in production.

{
  "symbol": "BTCUSDT",
  "timeframe": "1h",
  "indicators": {
    "ema_fast": { "type": "Ema", "params": [5] },
    "ema_slow": { "type": "Ema", "params": [15] }
  },
  "entry": { "cross_above": ["ema_fast", "ema_slow"] },
  "exit":  { "cross_below": ["ema_fast", "ema_slow"] },
  "sizing": { "type": "fixed_fraction", "fraction": 0.95 },
  "costs":  { "taker_bps": 5, "slippage": { "type": "fixed_bps", "bps": 2 } },
  "risk":   { "trailing_stop_pct": 5.0 }
}

The spec can reference hundreds of wickra-core indicators by name, with multi-output fields addressed as "name.field" (macd.signal, bb.upper, adx.plus_di). Because the spec is data, the backtest report comes back byte-for-byte in every language.

Install ​

The same engine from every language — native Rust, Python, Node.js and WASM, plus a C ABI for C, C++, C#, Go, Java and R.

pip install wickra-backtest

Run a strategy, get a report ​

Feed OHLCV arrays and a spec to run; the same call in every binding returns the same BacktestReport — metrics, trades, equity, fees_paid.

import wickra_backtest as wbt

spec = {
    "symbol": "BTCUSDT", "timeframe": "1h",
    "indicators": {"fast": {"type": "Ema", "params": [12]},
                   "slow": {"type": "Ema", "params": [26]}},
    "entry": {"cross_above": ["fast", "slow"]},
    "exit":  {"cross_below": ["fast", "slow"]},
    "sizing": {"type": "fixed_fraction", "fraction": 0.95},
}

report = wbt.run(opens, highs, lows, closes, spec=spec)
print(report["metrics"])

Built on the Wickra core ​

Wickra Backtest is part of the Wickra ecosystem. Its indicators are the same O(1) kernels that wickra-core computes live and that wickra-exchange trades on, so a backtest reasons over exactly the numbers a live strategy would see.

Wickra Backtest is a software library, not a trading system, and gives no financial advice — backtest results are deterministic transforms of the input data and do not predict future returns. Use it at your own risk.