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How to Write an Expert Advisor or an Indicator

MQL5 Source Codes of Expert Advisors for MetaTrader 5 - 2

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Expert Advisors analyze price charts and trade automatically following underlying rules. Here you can find MQL5 source codes solving a variety of problems. You are able to select both simple Expert Advisors based on moving average crossing and complex ones involving complicated signal generation algorithms and protection against trading mistakes.

You can download and launch offered Expert Advisors in MetaTrader 5. It is recommended that you test and optimize trading robots in the Strategy Tester before using them. The library of Expert Advisors is also available directly from MetaTrader 5 platform and MetaEditor development environment.

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BreakRevertPro EA merges breakout and mean reversion strategies with adaptive SL/TP and multi-timeframe ATR trailing stops for flexible trading in volatile markets.

Whether you’re running multiple trading robots simultaneously or just one sophisticated strategy, keeping track of each Expert Advisor’s performance can be surprisingly time-consuming. MetaTrader 5 (MT5) conveniently displays orders and positions in its “Toolbox,” but when numerous robots share the same account, it becomes harder to know which EA is generating your profits—or losses. A single account might have dozens or hundreds of trades, each opened by different EAs, making it difficult to separate the results of one robot from another.

Download all the ticks from your broker for all the symbols in the market watch. Download all history or until a specific date in the past if available.

This EA is designed to automatically follow market trends using signals from the Moving Average and Stochastic Oscillator indicators. The EA detects buy and sell signals by utilizing MA crossovers and confirms the trend with Stochastic. Additionally, the EA includes automatic position management, such as setting Take Profit, Stop Loss, and lot size doubling to enhance trading effectiveness in trending markets.

An MQL5 Expert Advisor that reacts to high-impact forex news events using the MQL5 Calendar. It identifies news related to inflation (CPI/PPI) and interest rate decisions, placing breakout trades with pending orders. Ideal for traders looking to automate news-based strategies. (This is just a starting point)

Symbol Swap Panel: Effortlessly switch the active symbol on your chart while simultaneously adding the new symbol to Market Watch. This tool ensures seamless integration and access to real-time market data, optimizing your trading workflow.

BollingerBandsEA trades according to Bollinger Bands.

Copy these into any EA you are busy coding and you"ll have a trailing SL. The only things you'll need to change would probably be InpMagic for your magic number or you could just copy my code as is , Remember to add COrderinfo ord; and CPositionInfo pos;

Creating profit labels on deals (closed trades) which also show in the strategy tester

MarketPredictor for MetaTrader 5 The MarketPredictor is an innovative Expert Advisor (EA) for MetaTrader 5 that leverages mathematical models such as sine functions, Fast Fourier Transform (FFT), sigmoid functions, and Monte Carlo simulations to analyze and predict market movements. This project is designed for developers, math enthusiasts, and traders interested in combining technological and financial innovations. Feel free to suggest, discuss, and implement code ideas directly in this thread. Whether it’s new features, improvement suggestions, or strategies – every contribution is welcome to further develop and optimize the MarketPredictor. You’re also welcome to add me to clarify questions privately, collaborate on the GitHub project, or send me your feedback directly. Let’s cook up something amazing together and take this project to the next level!

Optimal closing tool with Bollinger Bands and RSI.

The SUPERMACBOT is a fully automated trading robot that combines the power of the Moving Average Crossover strategy with the MACD Indicator to deliver precise and reliable trade signals. This Expert Advisor is designed to work seamlessly on all symbols and timeframes, offering versatility and adaptability for traders across various market conditions.

this is a copier template

This code shows how you can create a dashboard to display all the relevant information on the chart

A real-time monitoring tool for MetaTrader 5 that displays key financial data, allows quick symbol switching, and customizable symbol lists. Save and reload symbols, reset lists, and customize text and panel colors for a personalized trading experience.

This Expert Advisor (EA) for MetaTrader leverages a combination of technical indicators, including RSI, ATR, and moving averages, to identify high-probability trading opportunities. Equipped with dynamic lot sizing, trailing stops, and performance-based adjustments, it is tailored to optimize trading decisions and manage risk effectively in volatile market conditions.

is a text for the neutral network would like to know your opinion.

This Expert Advisor (EA) is designed for high-frequency trading on the 1-minute (M1) chart in both forex and crypto markets. It uses RSI and candlestick patterns to identify buy and sell signals, automatically executing trades with dynamic stop loss, take profit, and trailing stop levels based on market volatility.

The 2-Pair Correlation EA is a free Expert Advisor that trades BTC/USD and ETH/USD, capitalizing on their price correlation. The EA opens trades when the pairs diverge and closes them as they realign, automating your trading with minimal effort.

A dialog to display the maximum lot size permitted on the underlying asset for different types of orders (buy, sell, pending buy, and pending sell).

The EA identifies discrepancies between theoretical and actual currency exchange rates to execute risk-minimized trading opportunities.

Raymond Cloudy Day For EA, a revolutionary trading tool created by Raymond and expertly developed for the MT5 platform. This innovative indicator integrates a cutting-edge calculation method with advanced algorithms, surpassing traditional Pivot Points to enhance trading strategies with unparalleled precision.

Capture widescreen screenshots by pressing the 's' hotkey on the keyboard

Moving averages are useless. In fact, some argue that the best way to lose money for a beginner are MA-Price crossover strategies. But is it possible to make it work?

This is an update of the "Simple Yet Effective Breakout Strategy". In this code, I have added some helper functions for prop firm challenges.

This EA will scan all the closed trades and then print the nth trade from the end

This EA will scan all the open trades and then print the nth trade from the end

Select the last closed deal (trade) to further work.

This EA help you for Auto set the TP & SL by default parameter, Auto trailing stop & step for any order that you place from any device, Easy way to close all orders with 5 Button "Close All", "Close Profit", "Close Lose", "Close BUY", "Close SELL", Auto close all orders by profit or lose treshold value

QuickTradeKeys 123 is a user-friendly Expert Advisor (EA) for MetaTrader 5, enabling traders to execute buy and sell operations quickly by simply pressing the numbers '1' and '2' on their keyboard. Pressing '3' closes all open positions. This EA is ideal for swift trading and testing purposes where manual intervention is required without using the mouse.

A simple yet effective donchian channel breakout strategy. This strategy is timeless!

Here are some examples of codes for set counters based on "Count"

If you only want to execute your code blocks "only once per bar" it's important to check if there is new bar arrived or not.

This code block loops through all opened position and do trailing based on Ask and Bid prices.

This code block detects a New Bar or a New Candle when it has received.

The book "Neural networks in algorithmic trading with MQL5" is a comprehensive guide, covering both the theoretical foundations of artificial intelligence and neural networks and practical aspects of their application in financial trading using the MQL5 programming language.

KA-Gold Bot is an advanced trading advisor specifically designed for gold, utilizing the powerful combination of the Keltner channel strategy and two exponential moving averages (EMAs) - the 10-period EMA and the 200-period EMA. Principle of Operation: The 10-period EMA represents the average price cutting above/below the Keltner band, confirming an uptrend/downtrend. The price being above the 200-period EMA supports the uptrend/downtrend. This indicates that the uptrend/downtrend has been stronger than the previous 10 periods, considering the volatility over the last 50 periods. - Time frame: M15

The EA only trades buy positions and does not use SL and TP.

Syncs all chart symbols to symbol of the chart the EA is attached to

This utility is simple example to add sound alert on connect / disconnect

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