1. FILE & SIGNAL FORMAT

EA will read from a local file:
signal.json (mydomain.com/ signal.json ) or what ever it called 

The developer must define the JSON structure with me and adapt the EA to match it.

Example JSON format (one object per signal or array — developer to propose best method):

{
  "id": "12345",
  "symbol": "XAUUSD",
  "action": "buy", // or "sell" or "close"
  "volume": 0.10
}

The EA must handle:

Multiple signals

Unique IDs per trade

Matching close signals to the correct trade

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✅ 2. TRADE MANAGEMENT (BY UNIQUE ID)

Every trade must be opened with its own ID stored as:

comment or

magic number (developer can choose the best method)

When a “close” signal arrives with the same ID, the EA must ONLY close that single position.

EA must NOT close all open trades when a close signal is sent.

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✅ 3. SYMBOL NAME HANDLING (SUFFIX OPTION)

My broker uses different symbols:

TradingView: XAUUSD

Broker: XAUUSD.r

The EA must: ✅ Have input parameter for symbol suffix (e.g. .r) OR
✅ Try to automatically detect symbol names

Example:

Input: SymbolSuffix = ".r"

If no suffix is needed, leave it blank.

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✅ 4. EA PARAMETERS (MUST BE INCLUDED)

Inputs:

1. SymbolSuffix → string (e.g. ".r" or empty)

2. LotSize → default or read from JSON

3. Slippage

4. MagicNumberStart (if IDs stored as magic numbers)

5. FileName → default: signal.json

6. FileLocation → /MQL5/Files or Common folder

7. CheckIntervalSeconds → how often EA reads the file

8. CloseByIDOnly → true/false (must be true by default)

9. Optional risk-based lot settings or fixed volume

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✅ 5. FILE READING LOGIC

Developer must implement:

Reads file every X seconds

JSON parsing (no manual string hacks)

Handle multiple signals if they exist

After processing a signal:

Option 1: delete it

Option 2: mark it as "processed" (developer should suggest best approach)

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✅ 6. TRADE ACTIONS

For each signal:

"buy" → open a buy trade

"sell" → open a sell trade

"close" → only close the trade with matching ID

If the ID already exists in an open position, ignore duplicate open commands.

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✅ 7. ERROR HANDLING & LOGGING

EA must:

Print readable errors in Experts tab

Show if JSON not found or invalid

Alert if symbol not available

Skip signals safely without crashing

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✅ 8. TERMINAL & ACCOUNT REQUIREMENTS

Must work on MT5

Must handle hedging accounts (multiple trades same symbol)

Must support 3 or more simultaneous trades

Should survive terminal restarts without losing track of open IDs

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✅ 9. TESTING & DELIVERY

Developer must provide:

Example signal.json

Explanation/setup of file path

Instructions for putting EA in terminal

Source code (.mq5)