// 03 of 06 · deep dives

cTrader.

The ECN-style FX/CFD platform with a modern automation API. cAlgo is real C# with bracket orders, multi-symbol robots, and a cloud backtester. No bolt-on EA quirks.

Forex · CFDFree with brokerC# (cAlgo)Last reviewed: May 2026

// 01 · why this platform

The honest pitch.

cTrader is what serious FX traders pick when MetaTrader's single-threaded EA model starts hurting. cAlgo (now cTrader Automate) is real .NET, robots inherit from a clean Robot base class, and the order API includes ExecuteMarketOrder, ModifyPosition, ClosePosition, and bracket-order parameters as first-class arguments — not as separate orders you have to babysit. The catch: broker support is narrower than MT5, so you pick a cTrader broker first and the platform comes with it.

// 02 · at a glance

Auth, orders, limits.

Auth	Broker-account credentials in cTrader desktop; cBots run inside the platform process.
Order API	ExecuteMarketOrder / ExecutePendingOrder with StopLoss + TakeProfit in pips on the same call.
Backtester	Cloud-based, multi-thread; replay on tick data with realistic spread modelling.
Rate limits	Broker-enforced; cTrader Open API has additional REST rate limits.
Sandbox	Demo account from your cTrader broker (free, instant).
Platform	Windows desktop primary; cTrader Web for monitoring.

// 03 · first runnable snippet

Hello-world, but real.

cAlgo's ExecuteMarketOrder takes StopLoss and TakeProfit (in pips) on the same call — no race condition between order and bracket attach. The Label guards against duplicate entries on the same bar.

C# (NinjaScript)RsiBracketBot.cs

cTrader cAlgo — RSI bot with single-call brackets

1 using cAlgo.API;
2 using cAlgo.API.Indicators;
3  
4 [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
5 public class RsiBracketBot : Robot
6 {
7     [Parameter("RSI Periods", DefaultValue = 14)] public int RsiPeriods { get; set; }
8     [Parameter("Lots", DefaultValue = 0.10)]      public double Lots { get; set; }
9     [Parameter("SL pips", DefaultValue = 25)]     public double SL { get; set; }
10     [Parameter("TP pips", DefaultValue = 50)]     public double TP { get; set; }
11  
12     private RelativeStrengthIndex _rsi;
13     private const string Label = "RsiBracketBot";
14  
15     protected override void OnStart() {
16         _rsi = Indicators.RelativeStrengthIndex(Bars.ClosePrices, RsiPeriods);
17     }
18  
19     protected override void OnBar() {
20         if (Positions.FindAll(Label, SymbolName).Length > 0) return;
21  
22         var volume = Symbol.QuantityToVolumeInUnits(Lots);
23         var prev   = _rsi.Result.Last(1);
24  
25         if (prev < 30) ExecuteMarketOrder(TradeType.Buy,  SymbolName, volume, Label, SL, TP);
26         else if (prev > 70) ExecuteMarketOrder(TradeType.Sell, SymbolName, volume, Label, SL, TP);
27     }
28  
29     protected override void OnStop() {
30         foreach (var p in Positions.FindAll(Label, SymbolName)) ClosePosition(p);
31     }
32 }

// 04 · where it breaks

The traps everyone hits.

Real production failure modes. Sev1 = capital loss risk. Sev2 = data integrity / silent wrongness. Sev3 = developer ergonomics that bite later.

Pip vs point vs tick confusion

Sev1

What happens. On 5-digit FX brokers, 1 pip = 10 points. Set StopLoss=25 thinking 25 pips and you actually get 2.5 pips — your stop is hit almost immediately.

Fix. Always use Symbol.PipSize and Symbol.PointSize explicitly. Never hardcode a number without dividing by PipSize.

Broker fills below minimum lot

Sev2

What happens. Some cTrader brokers reject orders below 0.01 lots silently; the OnError event fires but your strategy continues as if filled.

Fix. Always check the OnError event and the return value of ExecuteMarketOrder — never assume success. Log every rejection with the broker's error code.

Server time vs UTC

Sev2

What happens. cTrader robots default to broker server timezone, which is often EET (Athens). Schedule-based logic runs at the wrong wall-clock time.

Fix. Set [Robot(TimeZone = TimeZones.UTC, ...)] explicitly. Convert to session-local time only when displaying.

Backtest spread = current spread

Sev3

What happens. The cloud backtester uses the current broker spread, not the historical spread. News-event backtests can look unrealistically clean.

Fix. Use 'Tick data from server' mode with realistic spread modelling, and add a per-trade slippage penalty when reporting expectancy.

// 05 · recommended stack

What to pair it with.

No platform stands alone. These are the layers that — paired with cTrader — produce production-grade automation.

Layer	Recommended	Why
Broker	IC Markets, Pepperstone, Spotware-native brokers	Pick a broker first (regulation + spread). cTrader follows.
Backtesting	cTrader Optimization + Python parameter sweep	Cloud opt for the heavy lifting; pandas/sklearn for cross-validation and walk-forward.
Monitoring	cTrader Web + Telegram bot via Open API	Web shows positions; Telegram pings on every fill or robot stop.
Code hosting	Git + ReSharper / Rider	Write cAlgo files in your IDE, copy into the cTrader Automate editor, and version control everything externally.

// 06 · next steps

Where to read next.

Back to the 16-platform matrix

1	using cAlgo.API;
2	using cAlgo.API.Indicators;
3
4	[Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
5	public class RsiBracketBot : Robot
6	{
7	[Parameter("RSI Periods", DefaultValue = 14)] public int RsiPeriods { get; set; }
8	[Parameter("Lots", DefaultValue = 0.10)] public double Lots { get; set; }
9	[Parameter("SL pips", DefaultValue = 25)] public double SL { get; set; }
10	[Parameter("TP pips", DefaultValue = 50)] public double TP { get; set; }
11
12	private RelativeStrengthIndex _rsi;
13	private const string Label = "RsiBracketBot";
14
15	protected override void OnStart() {
16	_rsi = Indicators.RelativeStrengthIndex(Bars.ClosePrices, RsiPeriods);
17	}
18
19	protected override void OnBar() {
20	if (Positions.FindAll(Label, SymbolName).Length > 0) return;
21
22	var volume = Symbol.QuantityToVolumeInUnits(Lots);
23	var prev = _rsi.Result.Last(1);
24
25	if (prev < 30) ExecuteMarketOrder(TradeType.Buy, SymbolName, volume, Label, SL, TP);
26	else if (prev > 70) ExecuteMarketOrder(TradeType.Sell, SymbolName, volume, Label, SL, TP);
27	}
28
29	protected override void OnStop() {
30	foreach (var p in Positions.FindAll(Label, SymbolName)) ClosePosition(p);
31	}
32	}