Describe a strategy in plain language, backtest it with real costs, let an AI agent find its weak spots, check your rules on today's data and export code to run on your own machine.
Illustrative example, not a real backtest result.
What backtests hide, what market history teaches and what we learn building the engine.
Read the journalBuild a strategy from ready-made rules: drag them into Buy and Sell, pick a market, and test it on real data. No code, no prompt.
Rules
Drag a rule into a box, or tap it to add it to the selected box. Stop and target always go to Sell.
Buy when
all of these hold
Drop rules here
Sell when
any of these happens
Drop rules here
Add at least one Buy rule to test it.
Most traders stitch together a charting site, a backtester and a spreadsheet. QuantPrompt covers the research path in one place: describe, test, stress and export. Follow one strategy through it.
1/4 · Describe · Natural-language backtest
The parser turns your sentence into explicit rules you can read and edit. Nothing runs that you can't see.
entry
supertrend(10, 3).direction crosses_above 0
rvol(20) greater_than 1.5
exit
close crosses_below donchian(20).lower
ticker AAPL timeframe 1D stop_loss 4%
Take a screenshot of your broker's portfolio screen. We read the holdings and their weights, then score diversification and the risk a year of prices shows.
| Symbol | Name | Qty | Value | Weight |
|---|---|---|---|---|
| AAPL | Apple | 120 | 40.044 | %34 |
| MSFT | Microsoft | 64 | 33.122 | %28 |
| NVDA | NVIDIA | 112 | 26.202 | %22 |
| GLD | SPDR Gold | 28 | 10.663 | %9 |
| TLT | 20+Y Treasury | 106 | 8.212 | %7 |
Portfolio score
–/100
Example portfolio. Risk from daily closes, Sep 2025 to Oct 2026.
Upload
Drop, pick or paste (Ctrl+V) a screenshot from any broker or exchange.
Read
Holdings and weights are read from the table. Tickers we can't read are matched by name.
Score
Diversification, concentration, sectors, asset mix, plus volatility, correlation and drawdown.
The image is never stored. It is read on our server first; only if that finds no holdings is it sent once to an AI model to read. 1 credit, refunded when nothing can be read.
Your strategy ingredients. Use these indicators in plain language — our AI parses them into executable trading logic.
Click any indicator to see how to use it in your strategy prompt.
Idea dice
No idea where to start? Roll one.
SuperTrend
SuperTrend · Trend
ATR-based trailing line that flips with the trend.
Start free and scale as you grow
For trying it out: a few backtests to see how it works.
For testing a handful of ideas each month.
For active strategy builders who compare and iterate.
For heavy use: 3,000 credits a month and full price history.
No credit card required for Free plan. All paid plans include a 14-day money-back guarantee.
Write down one rule you trade by. In under a minute you'll see its return, drawdown and every trade. Free plan, no card.
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