# LongPort OpenAPI Documentation

LongPort OpenAPI provides programmatic quote trading interfaces for investors with research and development capabilities and assists them to build trading or quote strategy analysis tools based on their own investment strategies. The functions fall into the following categories:

- **Trading** - Create, amend, cancel orders, query today's/past orders and transaction details, etc.
- **Quotes** - Real-time quotes, acquisition of historical quotes, etc.
- **Portfolio** - Real-time query of the account assets, positions, funds
- **Real-time subscription** - Provides real-time quotes and push notifications for order status changes

## Interface Type

LongPort provides diversified access methods such as HTTP / WebSockets interfaces for accessing the underlying services and SDK (Python / C++, etc.) encapsulated in the upper layer, allowing flexible choices.

## How to Enable OpenAPI

1. Log in to the [LongPort App](https://longportapp.com/download) to complete the account opening process;

2. Log in to the [longportapp.com](https://longportapp.com) and enter the developer platform, complete the developer verification (OpenAPI permission application), and obtain a token.

## Quote Coverage

<table>
    <thead>
    <tr>
        <th>Market</th>
        <th>Symbol</th>
    </tr>
    </thead>
    <tr>
        <td width="160" rowspan="2">HK Market</td>
        <td>Securities (including equities, ETFs, Warrants, CBBCs)</td>
    </tr>
    <tr>
        <td>Hang Seng Index</td>
    </tr>
    <tr>
        <td rowspan="3">US Market</td>
        <td>Securities (including stocks, ETFs)</td>
    </tr>
    <tr>
        <td>Nasdsaq Index</td>
    </tr>
    <tr>
        <td>OPRA Options</td>
    </tr>
    <tr>
        <td rowspan="2">CN Market</td>
        <td>Securities (including stocks, ETFs)</td>
    </tr>
    <tr>
        <td>Index</td>
    </tr>
</table>

## Trading

Supported trading functions include:

| Market    | Stock and ETF | Warrant & CBBC | Options |
| --------- | ------------- | -------------- | ------- |
| HK Market | ✓             | ✓              |         |
| US Market | ✓             | ✓              | ✓       |

## Rate Limit {#rate-limit}

| Category  | Limitation                                                                                                                                                                                                                            |
| --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Quote API | <ul><li>One account can only create one long link and subscribe to a maximum of 500 symbols at the same time</li><li>No more than 10 calls in a 1-second interval and the number of concurrent requests should not exceed 5</li></ul> |
| Trade API | <ul><li>No more than 30 calls in a 30-second interval, and the interval between two calls should not be less than 0.02 seconds</li></ul>                                                                                              |

:::success

The [OpenAPI SDK](https://open.longportapp.com/sdk) has done effective frequency control internally:

- Quote: The methods under `QuoteContext` will be actively controlled by the SDK according to the server's rate limit. When the request is too fast, the SDK will automatically delay the request. Therefore, you do not need to implement the frequency control details separately.
- Trade: The methods under `TradeContext` are not limited by the SDK. Due to the special nature of the trading order placement scenario, this is left to the user to handle.

:::

## Pricing {#pricing}

LongPort does not charge any additional fees for activating or using interface services. You only need to open a LongPort Integrated A/C and get OpenAPI service permissions to use it for free. For actual transaction fees, please contact the brokerage firm where you have opened your securities account.

## Other

The OpenAPI services are provided by LongPort and the applicable affiliates (subject to the agreement).
openapi-trade.longportapp.com

## SDK 

- [Introduction](https://open.longportapp.com/docs.md)

## Docs

- [Error Codes](https://open.longportapp.com/docs/error-codes.md)
- [Refresh Token](https://open.longportapp.com/docs/refresh-token-api.md)
- [Getting Started](https://open.longportapp.com/docs/getting-started.md)
- [Get Socket OTP (One time password)](https://open.longportapp.com/docs/socket-token-api.md)
- [llm](https://open.longportapp.com/docs/llm.md)
- [Overview](https://open.longportapp.com/docs/how-to-access-api.md)

## Trade

- [Overview](https://open.longportapp.com/docs/trade/trade-overview.md)
- [Trade Push](https://open.longportapp.com/docs/trade/trade-push.md)
- [Definition](https://open.longportapp.com/docs/trade/trade-definition.md)

## Execution

- [Get Today Executions](https://open.longportapp.com/docs/trade/execution/today_executions.md)
- [Get History Executions](https://open.longportapp.com/docs/trade/execution/history_executions.md)

## Order

- [Get Today Order](https://open.longportapp.com/docs/trade/order/today_orders.md)
- [Get History Order](https://open.longportapp.com/docs/trade/order/history_orders.md)
- [Replace Order](https://open.longportapp.com/docs/trade/order/replace.md)
- [Order Details](https://open.longportapp.com/docs/trade/order/order_detail.md)
- [Withdraw Order](https://open.longportapp.com/docs/trade/order/withdraw.md)
- [Estimate Maximum Purchase Quantity](https://open.longportapp.com/docs/trade/order/estimate_available_buy_limit.md)
- [Submit Order](https://open.longportapp.com/docs/trade/order/submit.md)

## Asset

- [Get Fund Positions](https://open.longportapp.com/docs/trade/asset/fund.md)
- [Get Account Balance](https://open.longportapp.com/docs/trade/asset/account.md)
- [Get Cash Flow](https://open.longportapp.com/docs/trade/asset/cashflow.md)
- [Get Stock Positions](https://open.longportapp.com/docs/trade/asset/stock.md)
- [Get Margin Ratio](https://open.longportapp.com/docs/trade/asset/margin_ratio.md)

## Quote

- [Overview](https://open.longportapp.com/docs/quote/overview.md)
- [Definition](https://open.longportapp.com/docs/quote/objects.md)

## Push

- [Push Real-time Quote](https://open.longportapp.com/docs/quote/push/quote.md)
- [Push Real-time Trades](https://open.longportapp.com/docs/quote/push/trade.md)
- [Push Real-time Depth](https://open.longportapp.com/docs/quote/push/depth.md)
- [Push Real-time Brokers](https://open.longportapp.com/docs/quote/push/broker.md)

## Pull

- [Real-time Quotes Of Securities](https://open.longportapp.com/docs/quote/pull/quote.md)
- [Trading Session of The Day](https://open.longportapp.com/docs/quote/pull/trade-session.md)
- [Real-time Quotes of Warrant](https://open.longportapp.com/docs/quote/pull/warrant-quote.md)
- [Security Trades](https://open.longportapp.com/docs/quote/pull/trade.md)
- [Security History Candlesticks](https://open.longportapp.com/docs/quote/pull/history-candlestick.md)
- [Security Brokers](https://open.longportapp.com/docs/quote/pull/brokers.md)
- [Real-time Quotes of Option](https://open.longportapp.com/docs/quote/pull/option-quote.md)
- [Current Market Temperature](https://open.longportapp.com/docs/quote/pull/market_temperature.md)
- [Security Capital Distribution](https://open.longportapp.com/docs/quote/pull/capital-distribution.md)
- [Option Chain By Date](https://open.longportapp.com/docs/quote/pull/optionchain-date-strike.md)
- [Security Capital Flow Intraday](https://open.longportapp.com/docs/quote/pull/capital-flow-intraday.md)
- [Security Depth](https://open.longportapp.com/docs/quote/pull/depth.md)
- [Warrant Filter](https://open.longportapp.com/docs/quote/pull/warrant-filter.md)
- [Calculate Indexes Of Securities](https://open.longportapp.com/docs/quote/pull/calc-index.md)
- [Basic Information of Securities](https://open.longportapp.com/docs/quote/pull/static.md)
- [Market Trading Days](https://open.longportapp.com/docs/quote/pull/trade-day.md)
- [Warrant Issuer IDs](https://open.longportapp.com/docs/quote/pull/issuer.md)
- [Broker IDs](https://open.longportapp.com/docs/quote/pull/broker-ids.md)
- [Security Candlesticks](https://open.longportapp.com/docs/quote/pull/candlestick.md)
- [Option Chain Expiry Date List](https://open.longportapp.com/docs/quote/pull/optionchain-date.md)
- [Historical Market Temperature](https://open.longportapp.com/docs/quote/pull/history_market_temperature.md)
- [Security Intraday](https://open.longportapp.com/docs/quote/pull/intraday.md)

## Subscribe

- [Subscribe Quote](https://open.longportapp.com/docs/quote/subscribe/subscribe.md)
- [Subscription Information](https://open.longportapp.com/docs/quote/subscribe/subscription.md)
- [Unsubscribe Quote](https://open.longportapp.com/docs/quote/subscribe/unsubscribe.md)

## Security

- [Retrieve the List of Securities](https://open.longportapp.com/docs/quote/security/security_list.md)

## Individual

- [Create Watchlist Group](https://open.longportapp.com/docs/quote/individual/watchlist_create_group.md)
- [Update Watchlist Group](https://open.longportapp.com/docs/quote/individual/watchlist_update_group.md)
- [Delete Watchlist Group](https://open.longportapp.com/docs/quote/individual/watchlist_delete_group.md)
- [Watchlist Group](https://open.longportapp.com/docs/quote/individual/watchlist_groups.md)

## Qa

- [Trade](https://open.longportapp.com/docs/qa/trade.md)
- [Quote Releated](https://open.longportapp.com/docs/qa/broker.md)
- [General](https://open.longportapp.com/docs/qa/general.md)

## Socket

- [Subscribe Real-Time Trading Data](https://open.longportapp.com/docs/socket/subscribe_trade.md)
- [Data Commands](https://open.longportapp.com/docs/socket/biz-command.md)
- [Endpoints](https://open.longportapp.com/docs/socket/hosts.md)
- [Control commands](https://open.longportapp.com/docs/socket/control-command.md)
- [Access differences between WebSocket and TCP](https://open.longportapp.com/docs/socket/diff_ws_tcp.md)
- [Subscribe Real-Time Market Data](https://open.longportapp.com/docs/socket/subscribe_quote.md)

## Protocol

- [Parse Header of Packet](https://open.longportapp.com/docs/socket/protocol/header.md)
- [Parse Request Packet](https://open.longportapp.com/docs/socket/protocol/request.md)
- [Parse Handshake](https://open.longportapp.com/docs/socket/protocol/handshake.md)
- [Protocol Overview](https://open.longportapp.com/docs/socket/protocol/overview.md)
- [Parse Push Packet](https://open.longportapp.com/docs/socket/protocol/push.md)
- [Parse Response Packet](https://open.longportapp.com/docs/socket/protocol/response.md)
- [Communication Model](https://open.longportapp.com/docs/socket/protocol/connect.md)