Instead of ‘login’ and ‘password’ use your credentials from https://app.dataforseo.com/api-access

            

# Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access 
login="login" 
password="password" 
cred="$(printf ${login}:${password} | base64)" 
id="04171157-0696-0183-0000-4f63affdd40a" 
curl --location --request GET "https://api.dataforseo.com/v3/merchant/amazon/sellers/task_get/advanced/${id}" 
--header "Authorization: Basic ${cred}"  
--header "Content-Type: application/json" 
--data-raw ""


        

<?php
// You can download this file from here https://cdn.dataforseo.com/v3/examples/php/php_RestClient.zip
require('RestClient.php');
$api_url = 'https://api.dataforseo.com/';
// Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access
$client = new RestClient($api_url, null, 'login', 'password');

try {
   $result = array();
   // #1 - using this method you can get a list of completed tasks
   // GET /v3/merchant/amazon/sellers/tasks_ready
   $tasks_ready = $client->get('/v3/merchant/amazon/sellers/tasks_ready');
   // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
   if (isset($tasks_ready['status_code']) AND $tasks_ready['status_code'] === 20000) {
      foreach ($tasks_ready['tasks'] as $task) {
         if (isset($task['result'])) {
            foreach ($task['result'] as $task_ready) {
               // #2 - using this method you can get results of each completed task
               // GET /v3/merchant/amazon/sellers/task_get/advanced/$id
               if (isset($task_ready['endpoint_advanced'])) {
                  $result[] = $client->get($task_ready['endpoint_advanced']);
               }
               // #3 - another way to get the task results by id
               // GET /v3/merchant/amazon/sellers/task_get/advanced/$id
               /*
               if (isset($task_ready['id'])) {
                  $result[] = $client->get('/v3/merchant/amazon/sellers/task_get/advanced/' . $task_ready['id']);
               }
               */
            }
         }
      }
   }
   print_r($result);
   // do something with result
} catch (RestClientException $e) {
   echo "n";
   print "HTTP code: {$e->getHttpCode()}n";
   print "Error code: {$e->getCode()}n";
   print "Message: {$e->getMessage()}n";
   print  $e->getTraceAsString();
   echo "n";
}
$client = null;
?>

            

from client import RestClient
# You can download this file from here https://cdn.dataforseo.com/v3/examples/python/python_Client.zip
client = RestClient("login", "password")
# 1 - using this method you can get a list of completed tasks
# GET /v3/merchant/amazon/sellers/tasks_ready
response = client.get("/v3/merchant/amazon/sellers/tasks_ready")
# you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
if response['status_code'] == 20000:
    results = []
    for task in response['tasks']:
        if (task['result'] and (len(task['result']) > 0)):
            for resultTaskInfo in task['result']:
                # 2 - using this method you can get results of each completed task
				# GET /v3/merchant/amazon/sellers/task_get/advanced/$id
                if(resultTaskInfo['endpoint_advanced']):
                    results.append(client.get(resultTaskInfo['endpoint_advanced']))                
                '''
                # 3 - another way to get the task results by id
                # GET /v3/merchant/amazon/sellers/task_get/advanced/$id              
                if(resultTaskInfo['id']):
                    results.append(client.get("/v3/merchant/amazon/sellers/task_get/advanced/" + resultTaskInfo['id']))
                '''
    print(results)
    # do something with result
else:
    print("error. Code: %d Message: %s" % (response["status_code"], response["status_message"]))

        

            


const task_id = '02231453-2604-0066-2000-64d39c6677d4';

const axios = require('axios');

axios({
    method: 'get',
    url: 'https://api.dataforseo.com/v3/merchant/amazon/sellers/task_get/advanced/' + task_id,
    auth: {
        username: 'login',
        password: 'password'
    },
    headers: {
        'content-type': 'application/json'
    }
}).then(function (response) {
    var result = response['data']['tasks'];
    // Result data
    console.log(result);
}).catch(function (error) {
    console.log(error);
});


        

            

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

namespace DataForSeoDemos
{
    public static partial class Demos
    {
        public static async Task merchant_amazon_sellers_task_get()
        {
            var httpClient = new HttpClient
            {
                BaseAddress = new Uri("https://api.dataforseo.com/"),
                // Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access
                DefaultRequestHeaders = { Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.ASCII.GetBytes("login:password"))) }
            };
            // #1 - using this method you can get a list of completed tasks
            // GET /v3/merchant/amazon/sellers/tasks_ready
            var response = await httpClient.GetAsync("/v3/merchant/amazon/sellers/tasks_ready");
            var tasksInfo = JsonConvert.DeserializeObject<dynamic>(await response.Content.ReadAsStringAsync());
            var tasksResponses = new List<object>();
            // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
            if (tasksInfo.status_code == 20000)
            {
                if (tasksInfo.tasks != null)
                {
                    foreach (var tasks in tasksInfo.tasks)
                    {
                        if (tasks.result != null)
                        {
                            foreach (var task in tasks.result)
                            {
                                if (task.endpoint_advanced != null)
                                {
                                    // #2 - using this method you can get results of each completed task
                                    // GET /v3/merchant/amazon/sellers/task_get/advanced/$id
                                    var taskGetResponse = await httpClient.GetAsync((string)task.endpoint_advanced);
                                    var taskResultObj = JsonConvert.DeserializeObject<dynamic>(await taskGetResponse.Content.ReadAsStringAsync());
                                    if (taskResultObj.tasks != null)
                                    {
                                        var fst = taskResultObj.tasks.First;
                                        // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
                                        if (fst.status_code >= 40000 || fst.result == null)
                                            Console.WriteLine($"error. Code: {fst.status_code} Message: {fst.status_message}");
                                        else
                                            tasksResponses.Add(fst.result);
                                    }
                                    // #3 - another way to get the task results by id
                                    // GET /v3/merchant/amazon/sellers/task_get/advanced/$id
                                    /*
                                    var tasksGetResponse = await httpClient.GetAsync("/v3/merchant/amazon/sellers/task_get/advanced/" + (string)task.id);
                                    var taskResultObj = JsonConvert.DeserializeObject<dynamic>(await tasksGetResponse.Content.ReadAsStringAsync());
                                    if (taskResultObj.tasks != null)
                                    {
                                        var fst = taskResultObj.tasks.First;
                                        // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
                                        if (fst.status_code >= 40000 || fst.result == null)
                                            Console.WriteLine($"error. Code: {fst.status_code} Message: {fst.status_message}");
                                        else
                                            tasksResponses.Add(fst.result);
                                    }
                                    */
                                }
                            }
                        }
                    }
                }
                if (tasksResponses.Count > 0)
                    // do something with result
                    Console.WriteLine(String.Join(Environment.NewLine, tasksResponses));
                else
                    Console.WriteLine("No completed tasks");
            }
            else
                Console.WriteLine($"error. Code: {tasksInfo.status_code} Message: {tasksInfo.status_message}");
        }
    }
}


        

The above command returns JSON structured like this:

{
  "version": "0.1.20210729",
  "status_code": 20000,
  "status_message": "Ok.",
  "time": "0.0647 sec.",
  "cost": 0,
  "tasks_count": 1,
  "tasks_error": 0,
  "tasks": [
    {
      "id": "08021205-1535-0309-0000-00fe791dc436",
      "status_code": 20000,
      "status_message": "Ok.",
      "time": "0.0171 sec.",
      "cost": 0,
      "result_count": 1,
      "path": [
        "v3",
        "merchant",
        "amazon",
        "sellers",
        "task_get",
        "advanced",
        "08021205-1535-0309-0000-00fe791dc436"
      ],
      "data": {
        "se_type": "sellers_list",
        "se": "amazon",
        "api": "merchant",
        "function": "sellers",
        "language_code": "en_US",
        "location_code": 9004056,
        "asin": "B07D528W98",
        "device": "desktop",
        "os": "windows"
      },
      "result": [
        {
          "asin": "B07D528W98",
          "type": "sellers_list",
          "se_domain": "amazon.com",
          "location_code": 9004056,
          "language_code": "en_US",
          "check_url": "https://www.amazon.com/dp/B07D528W98/ref=olp_aod_redir_impl1?_encoding=UTF8&aod=1",
          "datetime": "2021-08-02 09:05:43 +00:00",
          "title": "YOSUDA Indoor Cycling Bike Stationary - Cycle Bike with Ipad Mount ＆Comfortable Seat Cushion (Gray)",
          "image": "https://images-na.ssl-images-amazon.com/images/I/416qnPQkItL.jpg",
          "item_types": [
            "amazon_seller_main_item",
            "amazon_seller_item"
          ],
          "items_count": 11,
          "items": [
            {
              "type": "amazon_seller_main_item",
              "rank_group": 1,
              "rank_absolute": 1,
              "position": "left",
              "xpath": "/#document",
              "seller_name": "MASOU",
              "seller_url": "http://amazon.com/gp/aag/main?ie=UTF8&seller=A2XS9KO5PUQHMV&isAmazonFulfilled=1&asin=B07D528W98&ref_=olp_merch_name_0",
              "ships_from": "Amazon.com",
              "price": {
                "current": 279.99,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$279.99"
              },
              "rating": {
                "type": "rating_element",
                "position": "left",
                "rating_type": "Max5",
                "value": "4.5",
                "votes_count": 14438,
                "rating_max": "5"
              },
              "condition": null,
              "condition_description": null,
              "delivery_info": {
                "delivery_date_from": "2021-08-08T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Sunday, Aug 8",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 1,
              "rank_absolute": 2,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[1]",
              "seller_name": "Amazon Warehouse",
              "seller_url": "https://www.amazon.com/Warehouse-Deals/b?ie=UTF8&node=10158976011",
              "ships_from": "Amazon.com",
              "price": {
                "current": 196.23,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$196.23"
              },
              "rating": null,
              "condition": null,
              "condition_description": "Missing assembly hardware (screws/fasteners). Item will come in original packaging. Packaging will be damaged.",
              "delivery_info": {
                "delivery_date_from": "2021-08-09T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Monday, Aug 9",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 2,
              "rank_absolute": 3,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[2]",
              "seller_name": "Amazon Warehouse",
              "seller_url": "https://www.amazon.com/Warehouse-Deals/b?ie=UTF8&node=10158976011",
              "ships_from": "Amazon.com",
              "price": {
                "current": 205.15,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$205.15"
              },
              "rating": null,
              "condition": null,
              "condition_description": "Item will come repackaged.",
              "delivery_info": {
                "delivery_date_from": "2021-08-09T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Monday, Aug 9",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 3,
              "rank_absolute": 4,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[3]",
              "seller_name": "Amazon Warehouse",
              "seller_url": "https://www.amazon.com/Warehouse-Deals/b?ie=UTF8&node=10158976011",
              "ships_from": "Amazon.com",
              "price": {
                "current": 205.15,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$205.15"
              },
              "rating": null,
              "condition": null,
              "condition_description": "Small cosmetic imperfection on top, front or sides of item. Item will come in original packaging. Packaging will be damaged.",
              "delivery_info": {
                "delivery_date_from": "2021-08-08T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Sunday, Aug 8",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 4,
              "rank_absolute": 5,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[4]",
              "seller_name": "Amazon Warehouse",
              "seller_url": "https://www.amazon.com/Warehouse-Deals/b?ie=UTF8&node=10158976011",
              "ships_from": "Amazon.com",
              "price": {
                "current": 205.15,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$205.15"
              },
              "rating": null,
              "condition": null,
              "condition_description": "Item will come in original packaging. Packaging will be damaged.",
              "delivery_info": {
                "delivery_date_from": "2021-08-08T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Sunday, Aug 8",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 5,
              "rank_absolute": 6,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[5]",
              "seller_name": "Amazon Warehouse",
              "seller_url": "https://www.amazon.com/Warehouse-Deals/b?ie=UTF8&node=10158976011",
              "ships_from": "Amazon.com",
              "price": {
                "current": 205.15,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$205.15"
              },
              "rating": null,
              "condition": null,
              "condition_description": "Small cosmetic imperfection on top, front or sides of item. Small cosmetic imperfection on bottom or back of item. Item will come in original packaging. Packaging will be damaged.",
              "delivery_info": {
                "delivery_date_from": "2021-08-12T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": "2021-08-08T00:00:00+00:00",
                "fastest_delivery_date_to": "2021-08-10T00:00:00+00:00",
                "delivery_message": "FREE delivery: Thursday, Aug 12 Fastest delivery: Aug 8 - 10",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 6,
              "rank_absolute": 7,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[6]",
              "seller_name": "Amazon Warehouse",
              "seller_url": "https://www.amazon.com/Warehouse-Deals/b?ie=UTF8&node=10158976011",
              "ships_from": "Amazon.com",
              "price": {
                "current": 205.15,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$205.15"
              },
              "rating": null,
              "condition": null,
              "condition_description": "Small cosmetic imperfections on the corner of the item. Item will come in original packaging. Packaging will be damaged.",
              "delivery_info": {
                "delivery_date_from": "2021-08-11T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Wednesday, Aug 11",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 7,
              "rank_absolute": 8,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[7]",
              "seller_name": "Amazon Warehouse",
              "seller_url": "https://www.amazon.com/Warehouse-Deals/b?ie=UTF8&node=10158976011",
              "ships_from": "Amazon.com",
              "price": {
                "current": 205.15,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$205.15"
              },
              "rating": null,
              "condition": null,
              "condition_description": "Small cosmetic imperfection on top, front or sides of item. Small cosmetic imperfection on bottom or back of item. Small cosmetic imperfections on the corner of the item. Item will come in original packaging. Packaging will be damaged.",
              "delivery_info": {
                "delivery_date_from": "2021-08-08T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Sunday, Aug 8",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 8,
              "rank_absolute": 9,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[8]",
              "seller_name": "Amazon Warehouse",
              "seller_url": "https://www.amazon.com/Warehouse-Deals/b?ie=UTF8&node=10158976011",
              "ships_from": "Amazon.com",
              "price": {
                "current": 211.84,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$211.84"
              },
              "rating": null,
              "condition": null,
              "condition_description": "Item will come in original packaging. Packaging will be damaged.",
              "delivery_info": {
                "delivery_date_from": "2021-08-08T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Sunday, Aug 8",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 9,
              "rank_absolute": 10,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[9]",
              "seller_name": "MASOU",
              "seller_url": "http://amazon.com/gp/aag/main?ie=UTF8&seller=A2XS9KO5PUQHMV&isAmazonFulfilled=1&asin=B07D528W98&ref_=olp_merch_name_9",
              "ships_from": "Amazon.com",
              "price": {
                "current": 279.99,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$279.99"
              },
              "rating": {
                "type": "rating_element",
                "position": "left",
                "rating_type": "Max5",
                "value": "4.5",
                "votes_count": null,
                "rating_max": "5"
              },
              "condition": null,
              "condition_description": null,
              "delivery_info": {
                "delivery_date_from": "2021-08-08T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Sunday, Aug 8",
                "delivery_price": null
              }
            },
            {
              "type": "amazon_seller_item",
              "rank_group": 10,
              "rank_absolute": 11,
              "position": "left",
              "xpath": "/span[1]/span[1]/span[1]/div[1]/div[1]/div[4]/div[10]",
              "seller_name": "MASOU",
              "seller_url": "http://amazon.com/gp/aag/main?ie=UTF8&seller=A2XS9KO5PUQHMV&isAmazonFulfilled=1&asin=B07D528W98&ref_=olp_merch_name_10",
              "ships_from": "Amazon.com",
              "price": {
                "current": 279.99,
                "regular": null,
                "max_value": null,
                "currency": "USD",
                "is_price_range": false,
                "displayed_price": "$279.99"
              },
              "rating": {
                "type": "rating_element",
                "position": "left",
                "rating_type": "Max5",
                "value": "4.5",
                "votes_count": null,
                "rating_max": "5"
              },
              "condition": null,
              "condition_description": null,
              "delivery_info": {
                "delivery_date_from": "2021-08-12T00:00:00+00:00",
                "delivery_date_to": null,
                "fastest_delivery_date_from": null,
                "fastest_delivery_date_to": null,
                "delivery_message": "FREE delivery: Thursday, Aug 12",
                "delivery_price": null
              }
            }
          ]
        }
      ]
    }
  ]
}