Auto Lots Calculation EA (MT4/MT5) — Features and Parameters

TraderIsMe-Auto-Lots-Calculation-EA is a MetaTrader EA that automatically calculates lot size from the positions of horizontal lines (TP / EN / SL) you draw on the chart, then places orders with one click of the SELL / BUY button. It supports both MT4 and MT5 and works on Forex, CFDs, and crypto. Account currency is auto-detected.

This article is a reference for the EA’s features and input parameters. For heartbeat authentication, plan requirements, and API key setup, please also see the usage guide (coming soon in English).

Download

* Unzip and place the extracted .ex5 / .ex4 into MT’s data folder MQL5/Experts/ or MQL4/Experts/, then refresh the Navigator.

Overview

• Supported platforms: MetaTrader 4 / MetaTrader 5
• Licensing: heartbeat authentication tied to your TraderIsMe account (available on the FREE plan with periodic upgrade notifications)
• Markets: Forex, CFDs, crypto. Account currency is auto-detected

Main Features

• Drag the TP / Entry / SL horizontal lines to auto-calculate lot size that fits your specified loss condition
• Choose between “Fixed Loss Amount” and “Percentage of Margin (%)” calculation modes
• Toggle between market orders and pending orders
• When SL exceeds 1% of margin, the label is shown in a warning color
• Option to preserve line positions when switching timeframes
• Two-row close button layout at the bottom of the panel — “Close All” (every symbol) and “Close” (current chart symbol only), each individually toggleable
• Live readout on the close buttons showing total open Pips or PnL (1-second refresh). Font color flips automatically: blue when positive, red when negative
• Pip Size resolves on Auto (FX / CFD / crypto / indices / metals / stocks classified via price-band heuristics). Manual override available (1 / 0.1 / 0.01 / 0.001 / 0.0001)
• Auto-retry for filling modes (FOK / IOC / RETURN) on order send, absorbing broker-specific spec differences

Requirements

• MetaTrader 5 terminal
• A TraderIsMe account and an Account API key (issue it on the Settings page)
• Add https://app.traderis.me to MT5’s WebRequest allowed URL list

Usage Flow

1. Place the EA file TraderIsMe-Auto-Lots-Calculation-EA.mq5 into MT5’s MQL5/Experts/ and refresh the Navigator.
2. Drag and drop the EA onto any symbol’s chart.
3. On the “Common” tab, check “Allow Algo Trading.” On the “Inputs” tab, enter your Account API key in InpAccountApiKey.
4. Three horizontal lines (blue = TP, green = EN, red = SL) are drawn on the chart automatically. Adjust them by dragging.
5. Calculated lot size, PnL, and risk-reward are shown on the right-hand panel.
6. Clicking the SELL / BUY button at the bottom of the panel places an order with the displayed lot size.

Input Parameters

Calculation Settings

Line Settings

Panel Settings

Label Placement

Timeframe Change Behavior

Close Button Settings

The bottom of the panel can show two close buttons: Close All (closes every open position across all symbols) and Close (closes only positions for the current chart symbol). Each button can be independently shown or hidden to avoid accidental clicks. Each button can also display the total open Pips or PnL of its target positions in real time, with the font color switching automatically between positive and negative.

Subscription

Notes

• Heartbeat authentication: the EA performs its first authentication 60 seconds after startup, then checks plan status with the TraderIsMe server every 60 seconds. On the FREE plan, a notification message appears every 15 minutes, but the EA’s functionality is not restricted.
• Available plans: usable on every plan (FREE / BASIC / PRO). On the FREE plan, periodic notifications appear in MetaTrader. Upgrading to BASIC or PRO stops the notifications (see How to use free EAs).
• WebRequest URL allowance: unless https://app.traderis.me is allowed in MT5’s “Tools → Options → Expert Advisors,” the heartbeat will fail and lock immediately.
• Supported symbols: Forex, CFDs, and crypto. Symbol specs (Tick Value / Contract Size) are auto-fetched, but broker-specific symbol definitions may cause lot sizes to differ from expectations. Verify with a small trade first.
• When SL exceeds 1% of margin: a warning label is shown in the color specified by InpColorSLWarn (pink by default). Calculation still runs, but double-check before ordering since the risk is high.
• Magic number: when running alongside other EAs or manual trades, change InpMagicNumber to a non-conflicting value.

Related Documents

• Set Up MT4/MT5 Data Sync (Data Sync EA)

Download

* Unzip and place the extracted .ex5 / .ex4 into MT’s data folder MQL5/Experts/ or MQL4/Experts/, then refresh the Navigator.