New Order

Type: TRADE

External endpoint: POST /fapi/v1/order
Rocky impl: POST /fapi/v1/order ✓

Place a new order. Currently only LIMIT is supported; MARKET returns -1100 until the matching engine grows a MARKET type.

Request

POST /fapi/v1/order

Query / body params

Name	Type	Required	Notes
symbol	string	yes	standard pair, e.g. BTCUSDT.
side	string	yes	BUY or SELL.
type	string	yes	Only LIMIT accepted today.
quantity	string	yes	Base-asset quantity.
price	string	yes for LIMIT	Limit price.
newClientOrderId	string	no	Free-form idempotency key. Auto-generated UUID if omitted.

Response — 200

{
  "orderId": "8a3f5b2c-4d1e-6f7a-8b9c-0d1e2f3a4b5c",
  "clientOrderId": "my-bot-1748275200-001",
  "symbol": "BTCUSDT",
  "status": "NEW",
  "side": "BUY",
  "type": "LIMIT",
  "price": "76500.00",
  "origQty": "0.001",
  "updateTime": 1748275200500
}

Errors

HTTP	code	msg
400	-1100	Unknown symbol, invalid side, or unsupported type (e.g. MARKET).
400	-1102	price missing on a LIMIT order.
422	-2010	Insufficient balance to lock the required margin.
401	-2015	Invalid or revoked API key.

Other standard params not yet supported: timeInForce, reduceOnly, closePosition, stopPrice, activationPrice, callbackRate, workingType, priceProtect, newOrderRespType, positionSide. Leverage is system-wide LEVERAGE_V1=10 and cannot be set per-order.