MQL5 Source Codes of Libraries for MetaTrader 5

Economic calendar trading guard library for MetaTrader 5 with live MQL5 Calendar API integration.

A comprehensive stop-loss and trade management module offering multiple stop-loss methods (Fixed Pips, ATR-based, Swing High/Low, and Percentage) and trailing stop options (Fixed, ATR, Step, and Breakeven). It includes automatic broker stop-level adjustment, risk-reward–based take profit calculation, and visual stop-loss lines on the chart. The code follows a clean, structured architecture with a dedicated `CStopLossManager` class, standardized enums and structures, and fully documented English comments for clarity and maintainability.

Institutional prop firm protection library for MetaTrader 5.

Intelligent anti-tilt risk management library for MetaTrader 5.

Professional Telegram integration library for MetaTrader 5 EAs.

Runtime trade frequency adjustment library for MetaTrader 5.

Institutional risk analysis library for MetaTrader 5. Zero external dependencies. Pure MQL5 mathematics.

Centralized indicator handle management library for MetaTrader 5 EAs.

Complete deep learning library in pure MQL5. Build, train and deploy neural networks natively in MetaTrader 5. No DLLs, no Python, no external APIs.

An object-oriented MQL5 library (.mqh) that replaces static retail risk models with institutional Volatility-Adjusted Position Sizing (VAPS) and Kelly Criterion mathematics.

A professional object-oriented MQL5 library designed for quantitative developers. It provides asynchronous order execution and dynamic slippage control to prevent terminal freezing during high-frequency algorithmic trading.

Technical Details Uses MQL5's OrderSend with TRADE_ACTION_DEAL for instant market closure at current Bid/Ask prices. Includes slippage tolerance (10 points), proper volume matching, and magic number preservation. Loops backward through positions to prevent index shifting during execution.

A JSON library designed for massive use of LLMs and lower latency.

Monitoring memory consumption.

Include-file class that measures inter-tick latency, filters false alarms via a self-normalising ATR volatility gate, and broadcasts persistent lag alerts to other EAs via GlobalVariable IPC.

Include class that validates combined terminal ping + execution latency before trade operations. Returns false if threshold is exceeded.

Function for modifying open positions and pending orders

Profit/loss calculator of positions (open orders)

Function for closing positions and deleting orders

Function of lot calculation by risk percentage

If you have access to the Expert Advisor code, you can save balance and equity charts and calculate additional optimization criteria by adding additional code from this library.

Allow the EA to determine whether there are duplicate EAs on the chart based on conditions.

Automates MQL5 buffer and plot index management. Eliminates manual counting, simplifies Z-order layering, and handles complex plot types (Candles, Color Lines) with a single line of code.

Securing data transfer between client and Server could be a big challenge for you as MQL5 programmer. You may have experience in using built in MQL5 encryption systems like AES.AES can securely encrypt your data but on the other hand is not secure when it comes to sending the AES key through insecure channels. You can only rely on asymmetric encryption systems Like RSA in such cases. you keep the private key at your server side and only share the public key with your clients. Even more you can use hybrid RSA_AES approach to archive more performance

Multisymbol OnTick.

Structure of input parameters

Library for trading session control. At startup it counts the time of trading sessions for all 7 days of the week (on Sat and Sun there can be cryptocurrency trading), up to 10 sessions per day. Then in OnTick() you can do checks, and if a tick came in outside the trading session, you can exit further processing of it.

Compression of tick data for storage in a compact form up to 3.5 times more compact than .tcs MQ files. And for fast work with them, because reading 3 bytes takes less time than reading 60 bytes of MqlTick structure.

A JSON library that supports MQL4/MQL5

CDateTime milliseconds extension + datetime supervisory variable extension

Records ticks in real ticks mode and reads them in maths mode calling your strategy with each tick.

Source codes written in the process of developing a library for creating multi-currency Expert Advisors combining multiple instances of different trading strategies.

Working with keyboard data

This library is an updated version of the ErrorDescription.mqh library published by MetaQuotes, with some features included.

A simple comment.

Function to convert server time from one broker's time zone to another.

A set of classes for automatic moving of StopLoss of open positions by fixed indentation or by values of Parabolic SAR and moving averages indicators, or by specified position stop level.

Complete Telegram integration for MT5. Send trading signals, screenshots, reports & alerts to Telegram channels. Includes queue system, multi-channel support & risk management.

Professional Telegram Bot integration library for MetaTrader 5. Complete solution for sending trading signals, screenshots, reports, and real-time notifications to Telegram channels and groups.

Logify is a logging library for MQL designed to simplify debugging, tracking, and monitoring of EAs and indicators. It provides structured, customizable, and organized logs directly on the chart or in the terminal, with support for log levels, flexible formats, and multiple handlers. A lightweight, elegant solution that is easy to integrate into your MQL projects.