Submit Order

This API is used to submit order for HK and US stocks, warrant and option.

CLI

longbridge order buy TSLA.US 100 --price 250.00
longbridge order sell TSLA.US 100 --price 260.00

SDK Links

Python	longbridge.openapi.TradeContext.submit_order
Rust	longbridge::trade::TradeContext#submit_order
Go	TradeContext.SubmitOrder
Node.js	TradeContext#submitOrder
Java	TradeContext.submitOrder
C++	longbridge::trade::TradeContext::submit_order

Request

HTTP Method	POST
HTTP URL	/v1/trade/order

Parameters

Content-Type: application/json; charset=utf-8

Name	Type	Required	Description
symbol	string	YES	Stock symbol, use ticker.region format, example: AAPL.US
order_type	string	YES	Order Type
submitted_price	string	NO	Submitted price, example: 388.5 LO / ELO / ALO / ODD / LIT Order Required
submitted_quantity	string	YES	Submitted quantity, example: 100
trigger_price	string	NO	Trigger price, example: 388.5 LIT / MIT Order Required
limit_offset	string	NO	Limit offset amount TSLPAMT / TSLPPCT Order Required whenlimit_depth_level is set to 0
trailing_amount	string	NO	Trailing amount TSLPAMT Order Required
trailing_percent	string	NO	Trailing percent TSLPPCT Order Required
expire_date	string	NO	Long term order expire date, format YYYY-MM-DD, example: 2022-12-05 Required when time_in_force is GTD
side	string	YES	Order Side Enum Value: Buy Sell
outside_rth	string	NO	Enable or disable outside regular trading hours Enum Value: RTH_ONLY - regular trading hour only ANY_TIME - any time OVERNIGHT - Overnight
time_in_force	string	YES	Time in force Type Enum Value: Day - Day Order GTC - Good Til Canceled Order GTD - Good Til Date Order
remark	string	NO	remark (Maximum 255 characters)
limit_depth_level	int32	NO	Specifies the bid/ask depth level. Value range is -5 ~ 0 ~ 5. Negative numbers indicate bid levels (e.g., -1 means best bid level 1), positive numbers indicate ask levels (e.g., 1 means best ask level 1). When set to 0, the limit_offset parameter takes effect. Valid for TSLPAMT / TSLPPCT orders.
monitor_price	string	NO	Monitoring price. Monitoring starts only after reaching this price, updating the reference price. Valid for TSLPAMT / TSLPPCT orders.
trigger_count	int32	NO	Number of triggers. Value range is 0 ~ 3. Specifies that within 1 minute, the order will only be placed after being triggered multiple times. Valid for LIT / MIT / TSLPAMT / TSLPPCT orders.
client_request_id	string	NO	Idempotent request ID for preventing duplicate order submissions. The server caches this request ID for 10 minutes. If a request with the same ID is received within this period, it returns the same response without creating a duplicate order. Must be a unique identifier (e.g., UUID).

Idempotency

To ensure orders are not duplicated due to network retries or client failures, you can use the client_request_id parameter:

• Purpose: Prevents duplicate order creation when the same request is retried
• Cache Duration: 10 minutes (server-side)
• Format: Any unique string per request (e.g., UUID, or a client-generated identifier)
• Behavior: If the same client_request_id is received within 10 minutes, the server returns the cached response from the original request without creating a new order

Idempotency Example

First request:  client_request_id="abc123-uuid-request" → Creates order with ID 12345
Retry (same ID within 10 min): client_request_id="abc123-uuid-request" → Returns existing order ID 12345 (no duplicate)
New request:    client_request_id="xyz789-uuid-request" → Creates new order with different ID

When Omitting client_request_id

If you do not provide client_request_id (or pass an empty value), the request will still succeed and create an order normally. However, idempotency protection will be skipped, meaning:

• Each request (even identical ones) will create a separate order
• Network retries or accidental duplicate requests may result in duplicate orders
• No server-side caching of the request will be performed

It is strongly recommended to always provide a unique client_request_id for critical order submissions to prevent unintended duplicates.

Request Example

from decimal import Decimal
from longbridge.openapi import TradeContext, Config, OrderType, OrderSide, TimeInForceType, OAuthBuilder

oauth = OAuthBuilder("your-client-id").build(lambda url: print("Visit:", url))
config = Config.from_oauth(oauth)

# Create a context for trade APIs
ctx = TradeContext(config)

# Submit order
resp = ctx.submit_order("700.HK", OrderType.LO, OrderSide.Buy, Decimal(500), TimeInForceType.Day, submitted_price=Decimal(50), remark="Hello from Python SDK")
print(resp)

import asyncio
from decimal import Decimal
from longbridge.openapi import AsyncTradeContext, Config, OrderType, OrderSide, TimeInForceType, OAuthBuilder

async def main() -> None:
    oauth = await OAuthBuilder("your-client-id").build_async(lambda url: print("Visit:", url))
    config = Config.from_oauth(oauth)

    # Create a context for trade APIs
    ctx = AsyncTradeContext.create(config)

    # Submit order
    resp = await ctx.submit_order("700.HK", OrderType.LO, OrderSide.Buy, Decimal(500), TimeInForceType.Day, submitted_price=Decimal(50), remark="Hello from Python SDK")
    print(resp)

if __name__ == "__main__":
    asyncio.run(main())

const { Config, TradeContext, OAuth, OrderType, OrderSide, TimeInForceType, Decimal } = require('longbridge')

async function main() {
  const oauth = await OAuth.build('your-client-id', (_, url) => {
    console.log('Open this URL to authorize: ' + url)
  })
  const config = Config.fromOAuth(oauth)
  const ctx = TradeContext.new(config)
  const resp = await ctx.submitOrder({
    symbol: '700.HK',
    orderType: OrderType.LO,
    side: OrderSide.Buy,
    submittedQuantity: new Decimal(500),
    timeInForce: TimeInForceType.Day,
    submittedPrice: new Decimal(50),
    remark: 'Hello',
  })
  console.log(resp)
}
main().catch(console.error)

import com.longbridge.*;
import com.longbridge.trade.*;
import java.math.BigDecimal;
class Main {
    public static void main(String[] args) throws Exception {
        try (OAuth oauth = new OAuthBuilder("your-client-id").build(url -> System.out.println("Open to authorize: " + url)).get();
             Config config = Config.fromOAuth(oauth);
             TradeContext ctx = TradeContext.create(config)) {
            SubmitOrderResponse resp = ctx.submitOrder(new SubmitOrderOptions("700.HK", OrderType.LO, OrderSide.Buy, new BigDecimal("500"), TimeInForceType.Day).setSubmittedPrice(new BigDecimal("50")).setRemark("Hello")).get();
            System.out.println(resp.orderId);
        }
    }
}

use std::sync::Arc;
use longbridge::{oauth::OAuthBuilder, trade::{TradeContext, SubmitOrderOptions, OrderType, OrderSide, TimeInForceType}, Config};
use rust_decimal::Decimal;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let oauth = OAuthBuilder::new("your-client-id").build(|url| println!("Open this URL to authorize: {url}")).await?;
    let config = Arc::new(Config::from_oauth(oauth));
    let (ctx, _) = TradeContext::new(config);
    let resp = ctx.submit_order(
        SubmitOrderOptions::new("700.HK", OrderType::LO, OrderSide::Buy, Decimal::from(500), TimeInForceType::Day)
            .submitted_price(Decimal::from(50))
            .remark("Hello")
    ).await?;
    println!("{:?}", resp);
    Ok(())
}

#include <iostream>
#include <longbridge.hpp>

#ifdef WIN32
#include <windows.h>
#endif

using namespace longbridge;
using namespace longbridge::trade;

static void
run(const OAuth& oauth)
{
    Config config = Config::from_oauth(oauth);
    TradeContext ctx = TradeContext::create(config);

    SubmitOrderOptions opts{"700.HK", OrderType::LO, OrderSide::Buy, 200, TimeInForceType::Day, Decimal(50.0), std::nullopt, std::nullopt, std::nullopt, std::nullopt, std::nullopt, std::nullopt, std::nullopt};
    ctx.submit_order(opts, [](auto res) {
        if (!res) { std::cout << "failed" << std::endl; return; }
        std::cout << "order_id: " << res->order_id << std::endl;
    });
}

int main(int argc, char const* argv[]) {
#ifdef WIN32
    SetConsoleOutputCP(CP_UTF8);
#endif

    const std::string client_id = "your-client-id";
    OAuthBuilder(client_id).build(
    [](const std::string& url) {
        std::cout << "Open this URL to authorize: " << url << std::endl;
    },
    [](auto res) {
        if (!res) {
            std::cout << "authorization failed: " << *res.status().message() << std::endl;
            return;
        }
        run(*res);
    });

    std::cin.get();
    return 0;
}

package main

import (
	"context"
	"fmt"
	"log"

	"github.com/longbridge/openapi-go/config"
	"github.com/longbridge/openapi-go/oauth"
	"github.com/longbridge/openapi-go/trade"
	"github.com/shopspring/decimal"
)

func main() {
	o := oauth.New("your-client-id").
		OnOpenURL(func(url string) { fmt.Println("Open this URL to authorize:", url) })
	if err := o.Build(context.Background()); err != nil {
		log.Fatal(err)
	}
	conf, err := config.New(config.WithOAuthClient(o))
	if err != nil {
		log.Fatal(err)
	}
	tctx, err := trade.NewFromCfg(conf)
	if err != nil {
		log.Fatal(err)
	}
	defer tctx.Close()
	orderID, err := tctx.SubmitOrder(context.Background(), &trade.SubmitOrder{
		Symbol:            "700.HK",
		OrderType:         trade.OrderTypeLO,
		Side:              trade.OrderSideBuy,
		SubmittedQuantity: 500,
		SubmittedPrice:    decimal.NewFromFloat(50),
		TimeInForce:       trade.TimeTypeDay,
		Remark:            "Hello from Go SDK",
	})
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println("order_id:", orderID)
}

Response

Response Headers

• Content-Type: application/json

Response Example

{
  "code": 0,
  "message": "success",
  "data": {
    "order_id": 683615454870679600
  }
}

Response Status

Status	Description	Schema
200	The submission was successful and the order was commissioned.	None
400	The submit was rejected with an incorrect request parameter.	None