Robots

A day trading bot for the mini index: how we test MetaPro Scalp V2 before it goes live

A trading robot for MT5 that reaches your account only after passing the same test it will execute.

A robot that has to pass its own test first

Anyone who has shopped for a day trading bot knows the scene. The backtest shows a curve that only goes up, the seller talks about a high win rate, and the live account tells a different story. Most of the time the problem is the simulation: it knew things the robot could not know in real time.

We ran into this in our own lab. That is how MetaPro Scalp V2 was born: first we fixed the measuring stick, then we used it to pick the strategy.

The day our backtest got worse, and better

While reviewing the MetaPro Trader strategy lab, we found two places where the simulation was more optimistic than the market. In the first, the order was placed using information that only exists after the candle closes. In the second, the simulation kept several orders waiting at once, while the real robot works with one at a time.

We fixed both. The lab's numbers went down, and they started measuring what the robot can actually do in your account. Every MetaPro Scalp V2 analysis runs on that corrected measuring stick.

MetaPro Trader dashboard with the open positions panel, the mini index daily change and the robot card. — The MetaPro Trader main screen, with open positions, the day's change and a card for each active robot.

What MetaPro Scalp V2 is

It is a scalping strategy for the Brazilian mini index (WIN) on the 1-minute chart. It runs inside MetaPro Trader, connected to your broker's MetaTrader 5 server. It trades with the trend and waits for price to pull back instead of chasing it. Each trade is handled as one package, with target, stop and trailing stop set before entry.

You don't write a single line of code. You pick the strategy in the lab, run the analysis on the asset's history and decide whether to apply it to the robot.

Three risk controls that come switched on

Order spacing follows the day. On a busy session the orders sit further apart; on a quiet one, closer. The same setup adapts to very different days.

Half size near stop clusters. When there is an area just past the trade's stop where stops tend to pile up, the robot enters with half the size. The decision is made before the order goes out.

Daily target. Once the day's result reaches the target you set, the robot stops opening new trades. In our tests, this was the rule that cut the number of losing days the most.

How the analysis is done

The lab follows five rules, and they apply to any strategy you test:

What the analysis measures is what the robot executes: same entry, same order type, same exit rules.
One order at a time, just like in the account.
The cost per contract is deducted from every trade.
When the target and the stop both fit inside the same candle, the analysis assumes the stop came first.
Before applying, you see the worst case per trade and the suggested minimum capital.

What the Strategy tab panel shows

When the analysis finishes, the lab sums everything up in a single panel. In the MetaPro Scalp V2 analysis run on October 13, 2026 on the mini index, the test period had 346 trades with a 91.3% win rate, a profit factor of 1.47 and a result of R$ 6,241, with the default setting of 2 contracts.

Table: result of plus R$ 6,241 (31,205 points); profit factor 1.47; win rate 91.3%, 316 of 346 trades; best day plus R$ 995 on Sep 1, 2026; worst day minus R$ 1,025 on Sep 22, 2026; largest drawdown R$ 1,342; recommended minimum capital R$ 2,013 per contract; worst case per cycle minus R$ 720; test period Aug 20 to Oct 9, 2026. — The Strategy tab panel for the October 13, 2026 MetaPro Scalp V2 analysis. Historical simulation, test period.

The same panel shows the best and the worst day, the largest drawdown, the suggested minimum capital and the worst case per cycle. You see the result and the risk side by side before switching the robot on.

Month by month, and the result curve

The result was positive in all three months of the test period, and the screen's own curve shows how it was built, day by day.

Table: August 2026 from Aug 20, 66 trades, plus R$ 573; September 2026, 204 trades, plus R$ 5,115; October 2026 to Oct 9, 76 trades, plus R$ 553. — Result by month in the test period of the October 13, 2026 analysis.

Line chart of the cumulative result from Aug 20 to Oct 9, 2026, rising from zero to plus R$ 6,241. — Result over the test period, in cumulative R$ per trading day.

On the sessions recorded tick by tick, with real-time trailing

The lab measures the trailing stop at the close of each candle, because the history has no ticks. The robot, however, tightens the stop on every tick. To see V2 the way it really trades, we simulated tick by tick the 15 sessions MetaPro Trader recorded, from Sep 16 to Oct 9, 2026, with the 40/25 real-time trailing: 134 trades, a 97% win rate and 14 of 15 winning days.

Table: 15 sessions from Sep 16 to Oct 9, 2026; 134 trades; 97% win rate, 130 of 134; 14 winning days and 1 losing; result plus R$ 1,820; best day plus R$ 294; worst day minus R$ 448; average win R$ 19 and average loss R$ 170 per trade; 132 exits by trailing stop. — MetaPro Scalp V2 simulated tick by tick on the 15 recorded sessions, with 40/25 real-time trailing.

With real-time trailing, almost every trade exits through the trailing stop. When price moves 40 points in favor of the average price, the stop already locks 25 points of profit, before the grid ladder fills. Each win is small, and large losses become rare.

Bar chart with the result of each session from Sep 16 to Oct 9, 2026: 14 green bars between R$ 54 and R$ 294 and one red bar of minus R$ 448 on Oct 1. — Result of each of the 15 sessions, simulated tick by tick.

Step by step in MetaPro Trader: from login to the robot running

Everything happens in a single window connected to your MetaTrader 5 account. These are the steps, in the order you take them.

1. Sign in. The login screen remembers your access and the language you pick.

MetaPro Trader login screen with email, password and language choice. — The MetaPro Trader login screen.

2. Connect your MT5 account. Under Servers, search for your broker, pick the server and enter your account number. The app connects straight to the broker’s MetaTrader 5 server, with no plugin.

New MT5 server window with broker search, server and account details. — Adding an MT5 account: broker, server, account number and connection options.

3. Open the asset’s chart. In the top bar, pick the server, type the asset (for example, WINV26) and click Open.

MetaPro Trader top bar with the server, the asset field and the Open button. — The bar to open a chart: server, asset and the Open button.

4. Get to know the workspace. In one place you have the Consensus AI panel, the chart with the AI’s marks, the order book, the buy and sell ticket, the robot panel and Times & Sales.

MetaPro Trader workspace with Consensus AI, mini index chart, order book, order ticket, robot panel and Times & Sales. — The chart workspace in MetaPro Trader. Illustrative image.

5. Click AI. The AI button sits on the chart bar (shortcut Ctrl+I). Once on, the AI reads every candle and marks the pattern it found on the chart.

MetaPro Trader AI button. — The AI button on the chart bar.

6. The first time, run the training. Each timeframe has its own AI data. If the timeframe has none yet, the app shows “AI not trained for this timeframe” and offers to open the training screen. Click Train now.

7. Follow the training. The strategy lab opens on the AI data tab. Training downloads the asset’s history (for the mini index, the continuous WIN$D series), detects the patterns on every candle and stores how each one played out. It takes a few minutes and you can keep using the app; when it ends, the chart’s AI turns on by itself. The table shows each timeframe’s status: In use, Ready, Old, Preparing or Missing.

Strategy lab AI Data screen with the timeframe table and the preparation card in progress. — The lab’s AI data tab: status of each timeframe, number of patterns and training progress.

To get back to the lab later, right-click the chart and choose Artificial Intelligence (AI), or press Ctrl+L.

Chart context menu with Artificial Intelligence (AI), AI on/off and Robot on/off. — The chart menu, with the shortcut to the strategy lab.

8. See the AI reading and the Consensus. With the AI on, its marks show up on the chart, and the Consensus button opens the panel with a −100 to +100 gauge, the pattern, the direction, the regime, the confidence, the context and the recent signals.

Mini index chart with AI arrows and labels showing the pattern found. — The AI’s marks on the chart, with the pattern, the bias and the suggested action.

MetaPro Trader Consensus button. — The Consensus button.

Consensus AI panel with the −100 to +100 gauge and the list of recent signals. — The Consensus AI panel: bias gauge, pattern, direction, regime, confidence and recent signals.

9. Set up the MetaPro Scalp V2 strategy. In the lab, open the Strategy tab and follow the Parameters column from top to bottom:

Under Strategy, choose MetaPro Scalp V2.
Click Measured default. The form gets the measured settings: Gain 250 and Stop 300 points, 2 initial contracts, Pullback entry, a 5-level ladder spaced by volatility (ATR), aligned EMA filter and a 40/25 real-time trailing stop.
Check the Worst case per cycle at the top of the column (−R$ 720 with the whole ladder filled) and the risk : reward bar.
Under Risk management, review the daily gain (R$ 600 by default) and, if you like, the daily loss.
Click Start analysis. The Running the analysis card shows the progress.

10. Read the result and click Use. When the analysis ends, the panel shows result, win rate, profit factor, best and worst day, minimum capital and the curve, like the one shown above. Each analysis becomes a row in the Analyses table; on the one you pick, click Use. The row then shows In use, and the robot adopts those settings.

11. Turn on the robot. The Robot button, next to AI and Consensus, turns on automatic execution on the chart.

MetaPro Trader Robot button switched on. — The Robot button switched on.

MetaPro Trader robot panel running on a mini index chart, with trend, confidence and the trade in progress. — The robot panel on the chart: trend reading, confidence, the trade in progress and the day's performance. Illustrative image.

From then on the panel shows the trend reading, the confidence, the trade in progress and the day's performance. You can pause whenever you want. Orders stay at your broker; MetaPro Trader does not hold or move your money.

Bonus: order flow. On the same chart you can open Order Flow, which shows the volume traded at each price, plus the delta and the CVD of every candle.

Order Flow chart with volume at each price and the delta, CVD and volume of every candle. — MetaPro Trader Order Flow on the mini index. Illustrative image.

Who it is for

For traders who already trade the mini index and want to hand off execution without losing track of what the robot will do. And for anyone tired of pretty backtests: here you see how the analysis was done, with costs, worst case and minimum capital on the same screen, before you switch anything on.

This article was written by the MetaPro Trader team. Trading in financial markets involves risk of loss. Simulated and past results do not guarantee future results, and nothing here is investment advice.