MT4 API: control MetaTrader 4 accounts over REST & WebSocket

# open orders of a connected MT4 account
curl -s -H "x-api-key: $MTAPI_KEY" \
  "https://api.metatraderapi.net/OpenedOrders?id=$MTAPI_ID"

# buy 0.01 lots with a stop loss, safe to retry
curl -s -H "x-api-key: $MTAPI_KEY" \
  "https://api.metatraderapi.net/OrderSend?id=$MTAPI_ID&symbol=EURUSD&operation=Buy&volume=0.01&stoploss=1.0500&clientOrderId=mt4-0001"
# on MT4 a refused order reports the MT4 error number in "state"

import os, requests

API = "https://api.metatraderapi.net"
s = requests.Session()
s.headers["x-api-key"] = os.environ["MTAPI_KEY"]
ACCOUNT = os.environ["MTAPI_ID"]

for o in s.get(f"{API}/OpenedOrders", params={"id": ACCOUNT}, timeout=75).json():
    print(o["ticket"], o["symbol"], o["lots"], o["profit"])

const API = "https://api.metatraderapi.net";
const headers = { "x-api-key": process.env.MTAPI_KEY };
const id = process.env.MTAPI_ID;

const history = await (await fetch(`${API}/OrderHistory?id=${id}`, { headers })).json();
console.log(history.length, "closed orders");