# POST Query the latest 2 K lines of products in batches（High , Low, Open, Close）

English / [中文](https://apis.alltick.co/rest-api/stock-http-interface-api/post-pi-liang-cha-xun-chan-pin-zui-xin-2-genkxian)

## Post /batch-kline

## Interface Description

This interface allows batch querying of multiple products and multiple K-line types (e.g., 1-minute, 15-minute, 30-minute), but only the latest two K-lines can be queried at once.

For clients using the HTTP interface to obtain K-lines, it is advisable to combine the `/kline` and `/batch-kline` interfaces as follows:

* First, use the `/kline` interface to poll for historical data and store it in a local database. Subsequent historical data can be retrieved directly from the client's database without needing to make additional requests through the interface.
* Then, continuously use the `/batch-kline` interface to request the latest two K-lines for multiple products in bulk and update the database with this data.

This method allows for quick updates of the latest K-lines while avoiding limitations on request frequency caused by frequent requests for historical K-lines.

## Request Frequency

<table data-full-width="false"><thead><tr><th width="138">Plan</th><th width="248">Individual request</th><th width="332">Request multiple HTTP interfaces</th></tr></thead><tbody><tr><td>Free</td><td><p>1、1 request allowed every 10 seconds.</p><p>2、Each query can batch retrieve 10 items, where 10 equals the product count times the candlestick type.</p></td><td><p>1、1 request per 10 seconds.</p><p>2、/batch-kline needs 10-second intervals.</p><p>3、Total of 10 requests per minute (every 6 seconds).</p><p>4、Max 1000 daily requests; excess resets at midnight.</p></td></tr><tr><td>Basic</td><td><p>1、1 request every 3 seconds.</p><p>2、Each query can batch retrieve 100 items, where 100 equals the product count times the candlestick type.</p></td><td><p>1、One request per second.</p><p>2、/batch-kline: 1 request every 3 seconds.</p><p>3、Total of 60 requests per minute (1 request per second).</p><p>4、Max 86400 daily requests; excess resets at midnight.</p></td></tr><tr><td>Premium</td><td><p>1、1 request every 2 seconds.</p><p>2、Each query can batch retrieve 200 items, where 200 equals the product count times the candlestick type.</p></td><td><p>1、Combined interfaces: 10 requests/second.</p><p>2、/batch-kline: 1 request/2 seconds.</p><p>3、Total: 600 requests/minute (10/second).</p><p>4、Daily limit: 864,000 requests; reset daily at midnight if exceeded.</p></td></tr><tr><td>Professional</td><td><p>1、1 request per second.</p><p>2、Each query can batch retrieve 500 items, where 500 equals the product count times the candlestick type.</p></td><td><p>1、Combined interfaces: 20 requests/second.</p><p>2、/batch-kline: 1 request/second interval.</p><p>3、Total: 1200 requests/minute (20/second).</p><p>4、Daily limit: 1,728,000 requests; reset daily at midnight if exceeded.</p></td></tr><tr><td>All HK Stocks</td><td><p>1、1 request per second.</p><p>2、Each query can batch retrieve 500 items, where 500 equals the product count times the candlestick type.</p></td><td><p>1、Combined interfaces: 20 requests/second.</p><p>2、/batch-kline: 1 request/second interval.</p><p>3、Total: 1200 requests/minute (20/second).</p><p>4、Daily limit: 1,728,000 requests; reset daily at midnight if exceeded.</p></td></tr><tr><td>All CN Stocks</td><td><p>1、1 request per second.</p><p>2、Each query can batch retrieve 500 items, where 500 equals the product count times the candlestick type.</p></td><td><p>1、Combined interfaces: 20 requests/second.</p><p>2、/batch-kline: 1 request/second interval.</p><p>3、Total: 1200 requests/minute (20/second).</p><p>4、Daily limit: 1,728,000 requests; reset daily at midnight if exceeded.</p></td></tr></tbody></table>

## Interface Limitations

1. Please be sure to read:[ \[ HTTP Interface Limitations \].](/integration-process/interface-restriction-description/http-interface-restrictions.md)
2. Please be sure to read: [\[ Error Code Descriptions \].](/integration-process/interface-restriction-description/error-code-description.md)

## API Endpoints

1. **US Stocks, Hong Kong Stocks, A Shares, Major Index Data API Endpoints:**
   * **Base Path:** `/quote-stock-b-api/batch-kline`
   * **Full URL:** `https://quote.alltick.co/quote-stock-b-api/batch-kline`
2. **Forex, Precious Metals, Cryptocurrencies, Commodities API Endpoints:**
   * **Base Path:** `/quote-b-api/batch-kline`
   * **Full URL:** `https://quote.alltick.co/quote-b-api/batch-kline`

***

## Request Examples

1. **Request Example for US Stocks, Hong Kong Stocks, A Shares, Major Index Data:**\
   The batch query function for retrieving the latest K-line data requires many parameters, which should be included in the request body. Only the `token` parameter should be included in the URL.\
   When sending the query request, you must include the method name and token information. An example request is as follows:

   ```plaintext
   https://quote.alltick.co/quote-stock-b-api/batch-kline?token=your_token
   ```
2. **Request Example for Forex, Precious Metals, Cryptocurrencies, Commodities:**\
   The batch query function for retrieving the latest K-line data requires many parameters, which should be included in the request body. Only the `token` parameter should be included in the URL.\
   When sending the query request, you must include the method name and token information. An example request is as follows:

   ```plaintext
   https://quote.alltick.co/quote-b-api/batch-kline?token=your_token
   ```

***

## <mark style="color:red;">The batch query for the latest product K-lines includes many parameters, so they are placed in the request body. Only the</mark> <mark style="color:red;"></mark><mark style="color:red;">`token`</mark> <mark style="color:red;"></mark><mark style="color:red;">parameter is kept in the URL.</mark>

## Body request parameters

```
{
  "trace": "c2a8a146-a647-4d6f-ac07-8c4805bf0b74",
  "data": {
    "data_list": [
      {
        "code": "700.HK",
        "kline_type": 1,
        "kline_timestamp_end": 0,
        "query_kline_num": 1,
        "adjust_type": 0
      },
      {
        "code": "GOOGL.US",
        "kline_type": 1,
        "kline_timestamp_end": 0,
        "query_kline_num": 1,
        "adjust_type": 0
      }
    ]
  }
}
```

## Request parameters

<table data-full-width="false"><thead><tr><th width="182.836669921875">Name</th><th width="88.910888671875">Position</th><th width="82.2265625">Type</th><th width="90.3702392578125">Required</th><th>Description</th></tr></thead><tbody><tr><td>token</td><td>query</td><td>string</td><td>Yes</td><td></td></tr><tr><td>body</td><td>body</td><td>object</td><td>No</td><td></td></tr><tr><td>» trace</td><td>body</td><td>string</td><td>Yes</td><td>Trace code used for logging purposes, ensure uniqueness for each request</td></tr><tr><td>» data</td><td>body</td><td>object</td><td>Yes</td><td></td></tr><tr><td>»» data_list</td><td>body</td><td>[object]</td><td>Yes</td><td></td></tr><tr><td>»»» code</td><td>body</td><td>string</td><td>Yes</td><td>Refer to the code list and select the code you want to query：<a href="https://docs.google.com/spreadsheets/d/1avkeR1heZSj6gXIkDeBt8X3nv4EzJetw4yFuKjSDYtA/edit?gid=495387863#gid=495387863">[Click on the code list]</a><br><mark style="color:$danger;">Note: The case of the code value must be consistent with the code in the product list.</mark></td></tr><tr><td>»»» kline_type</td><td>body</td><td>integer</td><td>Yes</td><td>Type of K-line: <br>1、1 represents 1-minute K-line, 2 represents 5-minute K-line, 3 represents 15-minute K-line, 4 represents 30-minute K-line, 5 represents 1-hour K-line, 6 represents 2-hour K-line (not supported for stocks), 7 represents 4-hour K-line (not supported for stocks), 8 represents daily K-line, 9 represents weekly K-line, and 10 represents monthly K-line. (Note: Stocks do not support 2-hour and 4-hour K-lines.)<br>2、The shortest K-line supported is 1 minute.<br>3、Query yesterday's closing price, with kline_type set to 8.</td></tr><tr><td>»»» kline_timestamp_end</td><td>body</td><td>integer</td><td>Yes</td><td><p>Query K-lines from a specified time:</p><p>1、Send 0 to query from the latest trading day.</p><p>2、Send a timestamp to query from that time.</p><p>3、Only forex, precious metals, and cryptocurrencies support timestamps; stock codes do not.</p></td></tr><tr><td>»»» query_kline_num</td><td>body</td><td>integer</td><td>Yes</td><td>1、Number of K-lines to query, maximum of 2<br>2、To query yesterday's closing price, set kline_type to 8 and query_kline_num to 2. From the 2 returned k-line data points, the one with the smaller timestamp represents yesterday's closing price.</td></tr><tr><td>»»» adjust_type</td><td>body</td><td>integer</td><td>Yes</td><td>Adjustment type, effective only for stock codes, e.g., 0: ex-rights, 1: pre-adjustment, currently only supports 0</td></tr></tbody></table>

## **Response example**

```
{
  "ret": 200,
  "msg": "ok",
  "trace": "c2a8a146-a647-4d6f-ac07-8c4805bf0b74",
  "data": {
    "kline_list": [
      {
        "code": "700.HK",
        "kline_type": 1,
        "kline_data": [
          {
            "timestamp": "1677829200",
            "open_price": "136.421",
            "close_price": "136.412",
            "high_price": "136.422",
            "low_price": "136.407",
            "volume": "0",
            "turnover": "0"
          }
        ]
      },
      {
        "code": "GOOGL.US",
        "kline_type": 1,
        "kline_data": [
          {
            "timestamp": "1677829200",
            "open_price": "136.421",
            "close_price": "136.412",
            "high_price": "136.422",
            "low_price": "136.407",
            "volume": "0",
            "turnover": "0"
          }
        ]
      }
    ]
  }
}
```

## Response Result

<table><thead><tr><th>Status Code</th><th>Status Meaning</th><th width="148.5999755859375">Description</th><th>Data Model</th></tr></thead><tbody><tr><td>200</td><td>OK</td><td>OK</td><td>Inline</td></tr></tbody></table>

<table><thead><tr><th width="165.199951171875">Name</th><th width="96">Type</th><th width="135.00006103515625">Required</th><th>Description</th></tr></thead><tbody><tr><td>» ret</td><td>integer</td><td>true</td><td>Return code</td></tr><tr><td>» msg</td><td>string</td><td>true</td><td>Message corresponding to the return code</td></tr><tr><td>» trace</td><td>string</td><td>true</td><td>Request trace</td></tr><tr><td>» data</td><td>object</td><td>true</td><td></td></tr><tr><td>»» kline_list</td><td>[object]</td><td>true</td><td></td></tr><tr><td>»»» code</td><td>string</td><td>false</td><td>Code</td></tr><tr><td>»»» kline_type</td><td>integer</td><td>integer</td><td><p>Kline Types:</p><ol><li>1= 1-minute,2 = 5-minute,3 = 15-minute,<br>4 = 30-minute,
<br>5 = 1-hour,<br>6 = 2-hour (not supported for stocks),
<br>7 = 4-hour (not supported for stocks),<br>8 = daily, 9 = weekly,
<br>10 = monthly(Note: 2-hour and 4-hour Klines are not supported for stocks)</li><li>The shortest supported Kline is 1-minute.</li></ol></td></tr><tr><td>»»» kline_data</td><td>[array]</td><td>true</td><td></td></tr><tr><td>»»» timestamp</td><td>string</td><td>true</td><td>Timestamp of the Kline</td></tr><tr><td>»»» open_price</td><td>string</td><td>false</td><td>Open price of the Kline</td></tr><tr><td>»»» close_price</td><td>string</td><td>true</td><td><p><strong>Close price of the Kline</strong>:</p><ol><li>During trading hours, for the latest Kline, this is also the <strong>last traded price</strong></li><li>During market closure, for the latest Kline, this is the <strong>official closing price</strong></li></ol></td></tr><tr><td>»»» high_price</td><td>integer</td><td>true</td><td>High price of the Kline</td></tr><tr><td>»»» low_price</td><td>integer</td><td>true</td><td>Low price of the Kline</td></tr><tr><td>»»» volume</td><td>string</td><td>true</td><td>Trade volume of the Kline</td></tr><tr><td>»»» turnover</td><td>string</td><td>true</td><td>Trade amount (turnover) of the Kline</td></tr></tbody></table>

### Official Website

{% hint style="info" %}
Official website: <https://alltick.co/>
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://en.apis.alltick.co/rest-api/http-interface-api/post-query-the-latest-2-k-lines-of-products-in-batches.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.