[Purchase] Buy Items Using Product ID

By passing [product id] and [maxPrice] to buy a specific item under a HashName.

Rate limit is 10 requests per second.

The seller has 12 hours to ship the item, while the buyer can cancel orders that remain in [Waiting for Seller to Confirm Shipment] status after 1 hour.

The buyer has 24 hours to receive items.

The current interface request frequency is 10 times per second

HTTP request

POST /market/open_api/request/?action=merchant.buy.product.buy HTTP/1.1
Content-Type: application/json
Content-Length: 262
Host: localhost:8080

{
  "productId" : "2024110315493001001705856",
  "apiKey" : "ft8CxQvvOGxpXVJcMhgZ",
  "externalTradeNo":"7020241105113720987465",
  "maxPrice":"1.00",
  "steamTradeUrl":"https://steamcommunity.com/tradeoffer/new/?partner=1090033018&token=ft8CxQvvOGxpXVJcMhgZ"
} 

Table 4. Request fields

Path	Type	Description
apiKey	String	api key
productId	String	product id
externalTradeNo	String	Third party merchant order number，Maximum length 30
steamTradeUrl	String	The recipient’s steam trade link.
maxPrice	String	The highest price you are willing to pay

HTTP response

HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 181

{
    "code": 0,
    "message": "SUCCESS",
    "data": {
        "orderId": "2020241009113451521796",
        "externalTradeNo": "2020241009113451521796",
        "payAmount": "31.00"
    }
}

Table 5. Response fields

Path	Type	Description
code	Number	Response code.
message	String	Response message
data	Object	Actual data.
data.orderId	String	Order id.
data.externalTradeNo	String	Third party merchant order number.
data.payAmount	String	Payment amount.