Supported Languages and Exchanges

Programming languages

The backtesting system supports strategies written in JavaScript, TypeScript, Python, Rust, PINE, MyLanguage, Blockly and Workflow.

• JavaScript strategies (TypeScript is compiled to JavaScript first) are backtested in the browser, where the backtest engine runs as WebAssembly; nothing needs to be installed. JavaScript strategies can be debugged with Chrome DevTools during a backtest, see this guide.
• Rust strategies are compiled by the platform's servers and the result is backtested in the browser; third-party crates declared in the strategy's frontmatter are fetched at compile time, so no local toolchain is needed.
• Python strategies are backtested on a docker, either the platform's public servers or your own docker. Both backtesting and live trading use the Python 3 environment of the docker's system; install the third-party libraries you need yourself. The public servers only provide common libraries.
• Workflow strategies show each node's execution state and data flow visually during a backtest.

Exchanges

Backtests use the platform's historical data; the exchanges selectable on the backtest page are the ones that can be backtested (the MCP tool list_exchanges also shows this: exchanges with backtest set to true have history data).

• Cryptocurrency: spot and futures of major exchanges, e.g. Binance and Futures_Binance, OKX and Futures_OKX, HTX and Futures_HTX, Bybit and Futures_Bybit, Bitget and Futures_Bitget, GateIO and Futures_GateIO, with all symbols of the exchange.
• Futu Securities (Futures_Futu): Hong Kong, US and other stock markets. Only daily data is available for backtesting; set currency to STOCK and select the stock code in the strategy with exchange.SetContractType():

            javascript
            
            
/*backtest
start: 2024-05-01 00:00:00
end: 2025-02-17 00:00:00
period: 1d
basePeriod: 1d
exchanges: [{"eid":"Futures_Futu","currency":"STOCK","fee":[0.03,0.03]}]
*/

function main() {
    var info = exchange.SetContractType("TSLA.US")   // Set the stock code: Tesla
    Log("info:", info)                               // Contract info: InstrumentID, PriceTick, LotTick, VolumeMultiple, ...
    Log(exchange.GetTicker())                        // Daily market data at the current backtest time
}