Tradebreath

Tradebreath lets a trader backtest a strategy in two ways. The first is a tick-by-tick replay driven by hand on the chart. The second is an AI agent that writes a strategy or indicator from a plain-language rule, runs the backtest and explains the results. Both use the same data and order list.

The platform covers forex, stocks, crypto, commodities, indices, ETFs and bonds, with over 800 symbols and timeframes from one second to one month. Tick history includes bid and ask prices, so fills match the price at that moment. Users can upload their own OHLCV or tick CSV files, parsed in the browser.

Strategies are saved with version history, so a fork can be tried without losing the earlier version. Strategies and indicators export as Pine, MQL5 or Python scripts. After an AI session, the trader can keep working on the chart by adding entries, closing trades early or letting a trade run.