mt5-httpapi

A REST API sitting on top of MetaTrader 5 running inside a Windows VM. You talk to it with plain HTTP/JSON — no MT5 libraries, no Windows, no bullshit. Just curl and go.

When To Use This Skill

• You need market data (candles, ticks, symbol info)
• You need to place, modify, or close trades
• You need account info (balance, equity, margin)
• You need to check open positions or pending orders
• You need trade/deal history

When NOT To Use This Skill

• Technical analysis calculations — do that yourself with the raw candle/tick data
• Charting or visualization — this gives you data, not pictures
• Backtesting — this is live/demo trading only

Setup

The API should already be running. Set the base URL:

export MT5_API_URL=http://localhost:6542

Or via OpenClaw config (~/.openclaw/openclaw.json):

{
  "skills": {
    "entries": {
      "mt5-httpapi": {
        "env": {
          "MT5_API_URL": "http://localhost:6542"
        }
      }
    }
  }
}

Verify: curl $MT5_API_URL/ping — if it responds, you're good. If it doesn't, the API isn't running. Tell the user to set it up: https://github.com/psyb0t/docker-metatrader5-httpapi

How It Works

Standard REST API. GET for reading, POST for creating, PUT for modifying, DELETE for closing/canceling. All request/response bodies are JSON.

Every error response looks like:

{"error": "description of what went wrong"}

API Reference

Health

# Is the API alive?
curl $MT5_API_URL/ping

Response:

{"status": "ok"}

# Last MT5 error (useful for debugging failed trades)
curl $MT5_API_URL/error

Response:

{"code": 1, "message": "Success"}

Terminal

# Get terminal info
curl $MT5_API_URL/terminal

Response:

{
    "build": 5602,
    "codepage": 0,
    "commondata_path": "C:\\Users\\Docker\\AppData\\Roaming\\MetaQuotes\\Terminal\\Common",
    "community_account": false,
    "community_balance": 0.0,
    "community_connection": false,
    "company": "Your Broker Inc.",
    "connected": true,
    "data_path": "C:\\Users\\Docker\\Desktop\\Shared\\mybroker",
    "dlls_allowed": true,
    "email_enabled": false,
    "ftp_enabled": false,
    "language": "English",
    "maxbars": 100000,
    "mqid": false,
    "name": "MyBroker MetaTrader 5",
    "notifications_enabled": false,
    "path": "C:\\Users\\Docker\\Desktop\\Shared\\mybroker",
    "ping_last": 0,
    "retransmission": 0.003,
    "trade_allowed": true,
    "tradeapi_disabled": false
}

The most useful fields here: connected (is it connected to the broker), trade_allowed (can we trade), company (which broker).

# Initialize MT5 connection (usually auto-done, but use this if you get "MT5 not initialized" errors)
curl -X POST $MT5_API_URL/terminal/init

Response:

{"success": true}

# Shut down MT5
curl -X POST $MT5_API_URL/terminal/shutdown

Response:

{"success": true}

You almost never need to call init or shutdown manually. The API auto-initializes on first request. Only use init if something goes sideways, and shutdown if you explicitly want to kill the MT5 connection.

Account

# Get current account info
curl $MT5_API_URL/account

Response:

{
    "login": 12345678,
    "name": "Your Name",
    "server": "MyBroker-Server",
    "company": "Your Broker Inc.",
    "currency": "USD",
    "currency_digits": 2,
    "balance": 10000.0,
    "credit": 0.0,
    "profit": 0.0,
    "equity": 10000.0,
    "margin": 0.0,
    "margin_free": 10000.0,
    "margin_level": 0.0,
    "margin_initial": 0.0,
    "margin_maintenance": 0.0,
    "margin_so_call": 70.0,
    "margin_so_so": 20.0,
    "margin_so_mode": 0,
    "margin_mode": 2,
    "assets": 0.0,
    "liabilities": 0.0,
    "commission_blocked": 0.0,
    "leverage": 500,
    "limit_orders": 0,
    "trade_allowed": true,
    "trade_expert": true,
    "trade_mode": 0,
    "fifo_close": false
}

Key fields:

• balance — account balance (without open position P&L)
• equity — balance + unrealized P&L from open positions
• margin — currently used margin
• margin_free — available margin for new trades
• margin_level — margin level as percentage (equity/margin * 100)
• leverage — account leverage (e.g. 500 = 1:500)
• currency — account currency (USD, EUR, etc.)
• trade_allowed — whether trading is enabled
• margin_so_call — margin call level (%)
• margin_so_so — stop out level (%)

# List saved accounts from config (passwords are NOT included)
curl $MT5_API_URL/account/list

Response:

{
    "main": {"login": 12345678, "server": "RoboForex-Pro"},
    "demo": {"login": 87654321, "server": "RoboForex-Demo"}
}

# Login with explicit credentials
curl -X POST $MT5_API_URL/account/login \
  -H 'Content-Type: application/json' \
  -d '{"login": 12345678, "password": "pass", "server": "BrokerName-Server"}'

# Login by saved account name (from account.json)
curl -X POST $MT5_API_URL/account/login/demo

Login response:

{
    "success": true,
    "login": 87654321,
    "server": "RoboForex-Demo",
    "balance": 10000.0
}

Symbols

# List all available symbols (returns array of symbol names)
curl $MT5_API_URL/symbols

Response:

["EURUSD", "GBPUSD", "ADAUSD", "BTCUSD", ...]

# Filter symbols by group pattern
curl "$MT5_API_URL/symbols?group=*USD*"

# Get full details for a symbol
curl $MT5_API_URL/symbols/EURUSD

Response (this is a big one):

{
    "name": "EURUSD",
    "description": "Euro vs US Dollar",
    "path": "Markets\\Forex\\Major\\EURUSD",
    "currency_base": "EUR",
    "currency_profit": "USD",
    "currency_margin": "EUR",
    "digits": 5,
    "point": 1e-05,
    "spread": 30,
    "spread_float": true,
    "trade_contract_size": 100000.0,
    "trade_tick_size": 1e-05,
    "trade_tick_value": 1.0,
    "trade_tick_value_profit": 1.0,
    "trade_tick_value_loss": 1.0,
    "volume_min": 0.01,
    "volume_max": 100.0,
    "volume_step": 0.01,
    "volume_limit": 0.0,
    "trade_mode": 4,
    "trade_calc_mode": 0,
    "trade_exemode": 2,
    "trade_stops_level": 1,
    "trade_freeze_level": 0,
    "swap_long": -11.0,
    "swap_short": 1.14064,
    "swap_mode": 1,
    "swap_rollover3days": 3,
    "margin_initial": 0.0,
    "margin_maintenance": 0.0,
    "margin_hedged": 50000.0,
    "filling_mode": 3,
    "expiration_mode": 15,
    "order_gtc_mode": 0,
    "order_mode": 127,
    "bid": 1.18672,
    "ask": 1.18702,
    "bidhigh": 1.18845,
    "bidlow": 1.1847,
    "askhigh": 1.1885,
    "asklow": 1.18475,
    "last": 0.0,
    "lasthigh": 0.0,
    "lastlow": 0.0,
    "time": 1771027139,
    "volume": 0,
    "volumehigh": 0,
    "volumelow": 0,
    "select": true,
    "visible": true,
    "custom": false,
    "chart_mode": 0,
    "session_deals": 0,
    "session_buy_orders": 0,
    "session_sell_orders": 0,
    "session_buy_orders_volume": 0.0,
    "session_sell_orders_volume": 0.0,
    "session_open": 1.1869,
    "session_close": 1.18698,
    "session_turnover": 0.0,
    "session_volume": 0.0,
    "session_interest": 0.0,
    "session_aw": 0.0,
    "session_price_settlement": 0.0,
    "session_price_limit_min": 0.0,
    "session_price_limit_max": 0.0,
    "price_change": -0.0219,
    "price_volatility": 0.0,
    "price_theoretical": 0.0,
    "price_sensitivity": 0.0,
    "price_greeks_delta": 0.0,
    "price_greeks_theta": 0.0,
    "price_greeks_gamma": 0.0,
    "price_greeks_vega": 0.0,
    "price_greeks_omega": 0.0,
    "price_greeks_rho": 0.0,
    "bank": "",
    "basis": "",
    "category": "",
    "exchange": "",
    "formula": "",
    "isin": "",
    "page": "",
    "trade_accrued_interest": 0.0,
    "trade_face_value": 0.0,
    "trade_liquidity_rate": 0.0,
    "margin_hedged_use_leg": false,
    "ticks_bookdepth": 16
}

Key fields for trading:

• bid, ask — current prices
• digits — price decimal places
• point — smallest price change (e.g. 0.00001 for 5-digit forex)
• trade_tick_size — minimum price movement
• trade_tick_value — profit/loss per tick per 1 lot
• trade_contract_size — contract size (e.g. 100000 for forex)
• volume_min, volume_max, volume_step — lot size constraints
• spread — current spread in points
• swap_long, swap_short — overnight swap rates
• trade_stops_level — minimum distance for SL/TP from current price (in points, 0 = no limit)
• trade_freeze_level — distance from current price where orders can't be modified (in points)

# Get latest tick (bid/ask snapshot)
curl $MT5_API_URL/symbols/EURUSD/tick

Response:

{
    "time": 1771146325,
    "bid": 0.2973,
    "ask": 0.2976,
    "last": 0.0,
    "volume": 0,
    "time_msc": 1771146325123,
    "flags": 6,
    "volume_real": 0.0
}

Market Data — Candles (OHLCV)

# Get 100 M1 candles (default)
curl $MT5_API_URL/symbols/EURUSD/rates

# Get 200 H4 candles
curl "$MT5_API_URL/symbols/EURUSD/rates?timeframe=H4&count=200"

Available timeframes: M1 M2 M3 M4 M5 M6 M10 M12 M15 M20 M30 H1 H2 H3 H4 H6 H8 H12 D1 W1 MN1

Response (array of candles):

[
    {
        "time": 1771128000,
        "open": 0.2962,
        "high": 0.3006,
        "low": 0.2922,
        "close": 0.2979,
        "tick_volume": 4755,
        "spread": 30,
        "real_volume": 0
    }
]

• time is the candle open time, unix epoch seconds
• tick_volume is the number of ticks in the candle (use as volume proxy for forex)
• real_volume is exchange-reported volume (0 for most forex)

Market Data — Ticks

# Get last 100 ticks
curl $MT5_API_URL/symbols/EURUSD/ticks

# Get last 500 ticks
curl "$MT5_API_URL/symbols/EURUSD/ticks?count=500"

Response (array of ticks):

[
    {
        "time": 1771146325,
        "bid": 0.2973,
        "ask": 0.2976,
        "last": 0.0,
        "volume": 0,
        "time_msc": 1771146325123,
        "flags": 6,
        "volume_real": 0.0
    }
]

• time — unix epoch seconds
• time_msc — same timestamp in milliseconds for higher precision

Placing Orders

# Market buy
curl -X POST $MT5_API_URL/orders \
  -H 'Content-Type: application/json' \
  -d '{"symbol": "ADAUSD", "type": "BUY", "volume": 1000}'

# Market buy with SL and TP
curl -X POST $MT5_API_URL/orders \
  -H 'Content-Type: application/json' \
  -d '{"symbol": "ADAUSD", "type": "BUY", "volume": 1000, "sl": 0.25, "tp": 0.35}'

# Market sell
curl -X POST $MT5_API_URL/orders \
  -H 'Content-Type: application/json' \
  -d '{"symbol": "ADAUSD", "type": "SELL", "volume": 1000}'

# Pending buy limit (triggers when price drops to 0.28)
curl -X POST $MT5_API_URL/orders \
  -H 'Content-Type: application/json' \
  -d '{"symbol": "ADAUSD", "type": "BUY_LIMIT", "volume": 1000, "price": 0.28, "sl": 0.25, "tp": 0.35}'

Full order body:

{
    "symbol": "ADAUSD",
    "type": "BUY",
    "volume": 1000,
    "price": 0.28,
    "sl": 0.25,
    "tp": 0.35,
    "deviation": 20,
    "magic": 0,
    "comment": "",
    "type_filling": "IOC",
    "type_time": "GTC"
}

• Required: symbol, type, volume. Everything else is optional.
• price gets auto-filled for market orders (uses current ask for BUY, bid for SELL).
• deviation — max price slippage in points. If price moves more than this between request and execution, order gets rejected. Default: 20.
• magic — expert advisor ID, use to tag orders from different strategies.
• type_filling — how to fill the order if full volume isn't available.
• type_time — when the order expires.

Order types:

• Market: BUY, SELL
• Pending: BUY_LIMIT, SELL_LIMIT, BUY_STOP, SELL_STOP, BUY_STOP_LIMIT, SELL_STOP_LIMIT

Fill policies: FOK (fill or kill — all or nothing), IOC (immediate or cancel — fill what you can, cancel rest, default), RETURN (fill what you can, leave rest as order)

Expiration: GTC (good till cancelled, default), DAY (expires end of day), SPECIFIED (expires at specific time), SPECIFIED_DAY (expires at specific day)

Trade result (returned on success):

{
    "retcode": 10009,
    "deal": 40536194,
    "order": 42094812,
    "volume": 3100.0,
    "price": 0.2989,
    "bid": 0.2986,
    "ask": 0.2989,
    "comment": "Request executed",
    "request_id": 1549268248,
    "retcode_external": 0
}

• retcode 10009 = success. Anything else = something went wrong, check comment.
• deal — deal ticket (unique ID for the executed trade)
• order — order ticket
• volume — actually executed volume
• price — execution price

Managing Pending Orders

# List all pending orders
curl $MT5_API_URL/orders

# Filter by symbol
curl "$MT5_API_URL/orders?symbol=EURUSD"

# Get specific order
curl $MT5_API_URL/orders/42094812

Pending order object:

{
    "ticket": 42094812,
    "time_setup": 1771147800,
    "time_setup_msc": 1771147800123,
    "time_done": 0,
    "time_done_msc": 0,
    "time_expiration": 0,
    "type": 2,
    "type_time": 0,
    "type_filling": 1,
    "state": 1,
    "magic": 0,
    "position_id": 0,
    "position_by_id": 0,
    "reason": 3,
    "volume_initial": 1000.0,
    "volume_current": 1000.0,
    "price_open": 0.28,
    "sl": 0.25,
    "tp": 0.35,
    "price_current": 0.2989,
    "price_stoplimit": 0.0,
    "symbol": "ADAUSD",
    "comment": "",
    "external_id": ""
}

Key fields:

• ticket — unique order ID, use this for modify/cancel
• type — order type (0=BUY, 1=SELL, 2=BUY_LIMIT, 3=SELL_LIMIT, 4=BUY_STOP, 5=SELL_STOP, 6=BUY_STOP_LIMIT, 7=SELL_STOP_LIMIT)
• volume_initial — originally requested volume
• volume_current — remaining volume (less if partially filled)
• price_open — order price
• sl, tp — stop loss and take profit
• price_current — current market price
• state — order state (1=placed, 2=canceled, 3=partial, 4=filled, 5=rejected, 6=expired)

# Modify a pending order (change price, SL, TP)
curl -X PUT $MT5_API_URL/orders/42094812 \
  -H 'Content-Type: application/json' \
  -d '{"price": 0.29, "sl": 0.26, "tp": 0.36}'

All fields optional. Only pass what you want to change.

# Cancel a pending order
curl -X DELETE $MT5_API_URL/orders/42094812

Both return a trade result object (see above).

Managing Positions

# List all open positions
curl $MT5_API_URL/positions

# Filter by symbol
curl "$MT5_API_URL/positions?symbol=ADAUSD"

# Get specific position
curl $MT5_API_URL/positions/42094812

Position object:

{
    "ticket": 42094812,
    "time": 1771147866,
    "time_msc": 1771147866130,
    "time_update": 1771147866,
    "time_update_msc": 1771147866130,
    "type": 0,
    "magic": 0,
    "identifier": 42094812,
    "reason": 3,
    "volume": 3100.0,
    "price_open": 0.2989,
    "sl": 0.25,
    "tp": 0.35,
    "price_current": 0.2991,
    "swap": 0.0,
    "profit": 6.2,
    "symbol": "ADAUSD",
    "comment": "",
    "external_id": ""
}

Key fields:

• ticket — unique position ID, use this for update/close
• type — 0 = buy, 1 = sell
• volume — current position size
• price_open — entry price
• price_current — current market price
• sl, tp — stop loss and take profit (0.0 = not set)
• swap — accumulated swap
• profit — unrealized P&L in account currency
• time — when the position was opened (unix epoch seconds)

# Update SL/TP on an open position
curl -X PUT $MT5_API_URL/positions/42094812 \
  -H 'Content-Type: application/json' \
  -d '{"sl": 0.27, "tp": 0.36}'

All fields optional. Only pass what you want to change.

# Close entire position
curl -X DELETE $MT5_API_URL/positions/42094812

# Partial close (close 500 out of 3100 volume)
curl -X DELETE $MT5_API_URL/positions/42094812 \
  -H 'Content-Type: application/json' \
  -d '{"volume": 500}'

# Close with custom deviation (max price slippage)
curl -X DELETE $MT5_API_URL/positions/42094812 \
  -H 'Content-Type: application/json' \
  -d '{"deviation": 50}'

All fields optional. volume defaults to full position, deviation defaults to 20.

Both update and close return a trade result object (see above).

History

Both endpoints require from and to as unix epoch seconds.

# Get order history for the last 24 hours
curl "$MT5_API_URL/history/orders?from=$(date -d '1 day ago' +%s)&to=$(date +%s)"

# Get deal history for the last 24 hours
curl "$MT5_API_URL/history/deals?from=$(date -d '1 day ago' +%s)&to=$(date +%s)"

# Get deal history for a specific range
curl "$MT5_API_URL/history/deals?from=1771060000&to=1771150000"

History order object (completed/cancelled orders):

{
    "ticket": 42094812,
    "time_setup": 1771147800,
    "time_setup_msc": 1771147800123,
    "time_done": 1771147866,
    "time_done_msc": 1771147866130,
    "time_expiration": 0,
    "type": 0,
    "type_time": 0,
    "type_filling": 1,
    "state": 4,
    "magic": 0,
    "position_id": 42094812,
    "position_by_id": 0,
    "reason": 3,
    "volume_initial": 3100.0,
    "volume_current": 0.0,
    "price_open": 0.2989,
    "sl": 0.25,
    "tp": 0.35,
    "price_current": 0.2989,
    "price_stoplimit": 0.0,
    "symbol": "ADAUSD",
    "comment": "Request executed",
    "external_id": ""
}

• state 4 = filled, 2 = canceled, 5 = rejected, 6 = expired
• time_setup = when the order was placed, time_done = when it was executed/cancelled
• volume_current = 0 means fully filled

Deal object (actual executed trades):

{
    "ticket": 40536194,
    "order": 42094812,
    "time": 1771147866,
    "time_msc": 1771147866130,
    "type": 0,
    "entry": 0,
    "position_id": 42094812,
    "symbol": "ADAUSD",
    "volume": 3100.0,
    "price": 0.2989,
    "commission": 0.0,
    "swap": 0.0,
    "profit": 0.0,
    "fee": 0.0,
    "magic": 0,
    "reason": 3,
    "comment": "",
    "external_id": ""
}

• type — 0 = buy, 1 = sell
• entry — 0 = entry (opening), 1 = exit (closing), 2 = reverse, 3 = close by opposite
• profit — realized P&L for this deal (0 for entries, actual P&L for exits)
• commission, swap, fee — trading costs
• position_id — links the deal to a position
• order — links the deal to the order that triggered it

Pre-Trade Checks (DO NOT SKIP)

Before you place ANY trade, you MUST verify these things. Skipping this can lose real money.

1. Check if trading is enabled on the account: GET /account → trade_allowed must be true. If it's false, you can't trade — don't even try.

1. Check if the symbol is open for trading: GET /symbols/SYMBOL → check trade_mode. It must be 4 (full trading). Other values mean trading is restricted or disabled for that symbol. Markets have trading hours — forex is closed on weekends, stocks have exchange hours, crypto is usually 24/7 but not always.

1. Check the contract size: GET /symbols/SYMBOL → trade_contract_size. This is critical. For forex it's usually 100,000 (meaning 1 lot = 100,000 units of the base currency). For crypto it might be 1 (meaning 1 lot = 1 coin). If you blindly send "volume": 1000 thinking it's 1000 coins but the contract size is 100,000, you just opened a position worth 100,000,000 units. Always check trade_contract_size and factor it into your position sizing.

1. Check the terminal connection: GET /terminal → connected must be true. If the terminal is disconnected from the broker, orders will fail.

Typical Workflow

1. Check the connection: GET /ping — make sure the API responds
2. Check your account: GET /account — verify trade_allowed is true, check balance, equity, margin_free
3. Check the terminal: GET /terminal — verify connected is true
4. Get symbol specs: GET /symbols/SYMBOL — verify trade_mode is 4 (trading enabled), check trade_contract_size, trade_tick_value, volume_min, volume_step
5. Get market data: GET /symbols/SYMBOL/rates?timeframe=H4&count=100 — pull candles for analysis
6. Get current price: GET /symbols/SYMBOL/tick — latest bid/ask
7. Calculate your position size and risk — use trade_contract_size and trade_tick_value from step 4. Don't guess.
8. Place the trade: POST /orders with your symbol, type, volume, SL, TP
9. Monitor: GET /positions to check open positions
10. Adjust: PUT /positions/:ticket to move SL/TP
11. Close: DELETE /positions/:ticket when you're done
12. Review: GET /history/deals to check what happened

Position Sizing

Say you want to risk 1% of your account on a trade with a stop loss at 3x ATR on H4:

1. Get account balance: GET /account → balance field. Also verify trade_allowed is true.
2. Get symbol specs: GET /symbols/ADAUSD → grab trade_contract_size, trade_tick_value, trade_tick_size, volume_min, volume_max, volume_step. Also verify trade_mode is 4.
3. Get candles: GET /symbols/ADAUSD/rates?timeframe=H4&count=15 → calculate ATR from high/low/close data (average true range over 14 periods)
4. Calculate:

• risk_amount = balance * 0.01
• sl_distance = ATR * 3
• ticks_in_sl = sl_distance / trade_tick_size
• risk_per_lot = ticks_in_sl * trade_tick_value (this is how much you lose per 1 lot if SL is hit)
• volume = risk_amount / risk_per_lot
• Sanity check: notional_value = volume trade_contract_size current_price — make sure this isn't insane relative to your balance

1. Round volume down to nearest volume_step, clamp between volume_min and volume_max
2. Get current price: GET /symbols/ADAUSD/tick → use ask for buy, bid for sell
3. Calculate SL price: entry_price - sl_distance for buy, entry_price + sl_distance for sell
4. Send the order: POST /orders with symbol, type, volume, sl

Technical Analysis

This API gives you raw market data — it does NOT do TA for you. If you need indicators (ATR, RSI, MACD, Bollinger Bands, moving averages, etc.), grab the candle data from here and crunch it yourself.

There's a full working example in the repo at examples/ta/ using pandas-ta — check indicators.py for individual indicator functions, signals.py for signal detection, and ta.py to run it all.

Quick example

import pandas as pd
import pandas_ta as ta
import requests

# Grab candles from the API
candles = requests.get("http://localhost:6542/symbols/EURUSD/rates?timeframe=H4&count=200").json()
df = pd.DataFrame(candles)

# ATR, RSI, MACD, Bollinger Bands, moving averages — one-liners
df["atr"] = ta.atr(df["high"], df["low"], df["close"], length=14)
df["rsi"] = ta.rsi(df["close"], length=14)
df = pd.concat([df, ta.macd(df["close"])], axis=1)
df = pd.concat([df, ta.bbands(df["close"], length=20, std=2)], axis=1)
df["sma_50"] = ta.sma(df["close"], length=50)
df["ema_21"] = ta.ema(df["close"], length=21)
df["mfi"] = ta.mfi(df["high"], df["low"], df["close"], df["tick_volume"], length=14)

Install: pip install requests pandas pandas-ta

Tips

1. ALWAYS check if trading is enabled before placing orders — GET /account → trade_allowed must be true. GET /symbols/SYMBOL → trade_mode must be 4. If either is wrong, the trade will fail or worse — you'll get errors you don't understand.
2. ALWAYS check trade_contract_size before sizing your position — this is the single easiest way to blow an account by accident. 1 lot of EURUSD = 100,000 EUR. 1 lot of BTCUSD might = 1 BTC. 1 lot of some index might = 10 contracts. Never assume. Always check.
3. ALWAYS check retcode in trade results — 10009 means success, anything else is a problem
4. Use GET /error to debug — when a trade fails, this tells you what MT5 is complaining about
5. Demo accounts first — test your shit before going live
6. Markets have hours — forex is closed on weekends (Friday ~22:00 UTC to Sunday ~22:00 UTC). Stocks follow exchange hours. Crypto is usually 24/7 but check the symbol's trade_mode to be sure. If you try to trade when the market is closed, the order will be rejected.
7. deviation matters for market orders — if price moves more than deviation points between your request and execution, the order gets rejected. Default is 20, increase it for volatile markets.
8. type_filling matters — some brokers only support certain fill policies. If your order gets rejected, try switching between FOK, IOC, and RETURN.
9. Partial closes are a thing — you don't have to close an entire position, pass volume in the DELETE body
10. History needs explicit time range — from and to are required, both unix epoch seconds
11. Candle time is the candle open time — not close time
12. time_msc is milliseconds — time is seconds, time_msc is the same timestamp in milliseconds
13. Check trade_stops_level on the symbol — this is the minimum distance (in points) between current price and your SL/TP. If it's 10 and the point is 0.00001, your SL/TP must be at least 0.0001 away from current price.
14. Check volume_step before placing orders — if volume_step is 0.01, you can't trade 0.015 lots. Round to the nearest step.
15. margin_free tells you how much you can trade — if it's 0 or close to 0, you're maxed out
16. profit on positions is unrealized — it changes with every tick. profit on deals is realized (final).
17. Do a sanity check on notional value — before sending any order, calculate volume trade_contract_size price and make sure it's not absurd relative to the account balance. If your $10,000 account is about to open a $5,000,000 notional position, something is wrong with your math.