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AlgoNexus
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Signal builder

Your trading rule, in plain English, tested before it is saved.

Build a signal with the visual builder, write it in NexusScript, or describe it to Nexus. You see the rule in plain English, where it fired on recent bars and a backtest net of costs. Nothing is saved until you confirm.

Start on paperSee pricing
app.algonexus.trade/signals/newDraft — not saved
Ask Nexus

“Buy when RSI crosses up through 30 while price is above the 200-day EMA, 2 ATR stop.”

The rule

Buy (long) on 1d bars when RSI crosses above 30 and close is above the 200 EMA. Stop: 2 × ATR(14). Target: 2 × the risk. Exit after 20 bars at the latest.

Backtest passed out of sample14 markers on recent bars
☐ I reviewed the rule, the markers and the backtest → Confirm and save
NexusScript

A language that can’t run code.

NexusScript compiles to the same safe, declarative rules as the visual builder: a fixed list of indicators, comparisons, stops and targets. There is no eval, no imports and no loops — your rule is data, never a program.

rsi_reversal_long.nexus
// NexusScript compiles to a signal spec; it is never executed as code.
signal rsi_reversal_long "RSI oversold bounce above the 200 EMA"
timeframe 1d
side long
let rsi = rsi(length=14)
let trend = ema(length=200)
when rsi crosses above 30 and close > trend
stop atr(mult=2, length=14)
target r(2)
hold 20
From idea to Autopilot, safely

Earned, not assumed.

Ask Nexus to draft

Describe the rule; Nexus drafts it and opens it in the builder. A draft is never a saved signal.

Markers on the chart

See exactly where the rule fired on recent bars before you trust it.

Backtest net of costs

Entry at the next bar's open, the market's fees and slippage, and an out-of-sample split.

Saved only when you confirm

Each confirmed version is recorded in your tamper-evident audit log.

Versioned

Changing the rules creates a new version. People using it move to it only if they opted in.

Autopilot after 14 days on paper

A signal can place orders on Autopilot only after a passed backtest and two weeks of paper trading.
No promise of profit
Backtests are simulations of the past. Every firing still goes through your risk gate, and you can lose money on any trade.

Build your first signal on paper.

Set a goal, see whether it’s realistic, and watch AlgoNexus work with simulated money first. No card needed for the 14-day trial.

Create free accountRead the risks first