# Best Sellers Rank: Request

> Request parameters, credit cost and a cURL example for the Easyparser BEST_SELLERS_RANK Real-Time API operation.

Source: https://docs.easyparser.com/real-time-integration/best-sellers-rank/request

Send a GET request with `operation=BEST_SELLERS_RANK` to the Real-Time API. You identify the product with its `asin`.

## Endpoint

```http
GET https://realtime.easyparser.com/v1/request
```

## Required parameters

All parameters go in the query string. See [Common Request Fields](/real-time-integration/common-required-request-fields) for details on the shared parameters.

| Parameter | Type | Required | Description |
|---|---|---|---|
| `api_key` | string | Yes | Your API key, sent as a query parameter. Find it at [Account > Plan](https://app.easyparser.com/account/plan). |
| `platform` | string | Yes | Target platform. Allowed: `AMZ` (Amazon). |
| `operation` | string | Yes | Operation code in upper case. Allowed: `BEST_SELLERS_RANK`. |
| `domain` | string | Yes | Amazon marketplace, written with a leading dot, for example `.com`. See [Supported Marketplaces](/essentials/supported-marketplaces). |
| `asin` | string | Yes | Amazon product ID: 10 upper-case letters or digits, for example `B0CJB6V2L5`. |

## Optional parameters

| Parameter | Type | Required | Description |
|---|---|---|---|
| `operation_version` | integer | No | Response structure version. `2` is the Live version since November 1, 2026; `1` is the legacy structure. Default: `2`. Allowed: `1`, `2`. |

## Credit cost

| Condition | Credits |
|---|---|
| Any successful request (version `1` or `2`) | 1 |

See [Credit Consumption](/essentials/credit-consumption).

## Example request

**cURL**

```bash
curl --get "https://realtime.easyparser.com/v1/request" \
  --data-urlencode "api_key=YOUR_API_KEY" \
  --data-urlencode "platform=AMZ" \
  --data-urlencode "operation=BEST_SELLERS_RANK" \
  --data-urlencode "domain=.com" \
  --data-urlencode "asin=B0CJB6V2L5" \
  --data-urlencode "operation_version=2"
```

**Python**

```python
import requests

params = {
    "api_key": "YOUR_API_KEY",
    "platform": "AMZ",
    "operation": "BEST_SELLERS_RANK",
    "domain": ".com",
    "asin": "B0CJB6V2L5",
    "operation_version": "2",
}

response = requests.get("https://realtime.easyparser.com/v1/request", params=params)
print(response.json())
```

**Node.js**

```javascript
const params = new URLSearchParams({
  api_key: "YOUR_API_KEY",
  platform: "AMZ",
  operation: "BEST_SELLERS_RANK",
  domain: ".com",
  asin: "B0CJB6V2L5",
  operation_version: "2",
});

const response = await fetch(`https://realtime.easyparser.com/v1/request?${params}`);
const data = await response.json();
console.log(data);
```

**HTTP**

```http
GET /v1/request?api_key=YOUR_API_KEY&platform=AMZ&operation=BEST_SELLERS_RANK&domain=.com&asin=B0CJB6V2L5&operation_version=2 HTTP/1.1
Host: realtime.easyparser.com
```

**PHP**

```php
<?php
$params = [
    'api_key' => 'YOUR_API_KEY',
    'platform' => 'AMZ',
    'operation' => 'BEST_SELLERS_RANK',
    'domain' => '.com',
    'asin' => 'B0CJB6V2L5',
    'operation_version' => '2',
];

$url = 'https://realtime.easyparser.com/v1/request?' . http_build_query($params);
$response = file_get_contents($url);
$data = json_decode($response, true);
print_r($data);
```

**Go**

```go
package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	params := url.Values{}
	params.Add("api_key", "YOUR_API_KEY")
	params.Add("platform", "AMZ")
	params.Add("operation", "BEST_SELLERS_RANK")
	params.Add("domain", ".com")
	params.Add("asin", "B0CJB6V2L5")
	params.Add("operation_version", "2")

	resp, err := http.Get("https://realtime.easyparser.com/v1/request?" + params.Encode())
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}
```

**C#**

```csharp
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;

var parameters = new Dictionary<string, string>
{
    ["api_key"] = "YOUR_API_KEY",
    ["platform"] = "AMZ",
    ["operation"] = "BEST_SELLERS_RANK",
    ["domain"] = ".com",
    ["asin"] = "B0CJB6V2L5",
    ["operation_version"] = "2",
};

var query = string.Join("&", parameters.Select(p =>
    $"{Uri.EscapeDataString(p.Key)}={Uri.EscapeDataString(p.Value)}"));

using var client = new HttpClient();
var response = await client.GetStringAsync($"https://realtime.easyparser.com/v1/request?{query}");
Console.WriteLine(response);
```

**Java**

```java
import java.net.URI;
import java.net.URLEncoder;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.charset.StandardCharsets;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.stream.Collectors;

public class EasyparserRequest {
    public static void main(String[] args) throws Exception {
        Map<String, String> params = new LinkedHashMap<>();
        params.put("api_key", "YOUR_API_KEY");
        params.put("platform", "AMZ");
        params.put("operation", "BEST_SELLERS_RANK");
        params.put("domain", ".com");
        params.put("asin", "B0CJB6V2L5");
        params.put("operation_version", "2");

        String query = params.entrySet().stream()
            .map(e -> URLEncoder.encode(e.getKey(), StandardCharsets.UTF_8) + "="
                + URLEncoder.encode(e.getValue(), StandardCharsets.UTF_8))
            .collect(Collectors.joining("&"));

        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://realtime.easyparser.com/v1/request?" + query))
            .GET()
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}
```

## Notes

- This operation does not support address parameters (`address_id`, `zip_code` and the other inline address fields), `language` or `currency`.
- The response echoes the applied version in `request_parameters.operation_version`. See [Operation Versioning](/essentials/operation-versioning).
- `operation_version` also works in Bulk API jobs. See [Bulk Service Request](/bulk-integration/bulk-service-request).
- A version number that does not exist for the operation returns `{"error": "[!] The operation_version is not supported for this operation."}`.