# Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access 
login="login" 
password="password" 
cred="$(printf ${login}:${password} | base64)" 
curl --location --request POST "https://api.dataforseo.com/v3/merchant/amazon/asin/task_post" 
--header "Authorization: Basic ${cred}"  
--header "Content-Type: application/json" 
--data-raw "[
    {
        "language_code": "en_US",
        "location_code": 2840,
        "asin": "B0756FCPPN"
    }
]"

<?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');

$post_array = array();
// example #1 - a simple way to set a task
// this way requires you to specify a location, a language of search, and an asin.
$post_array[] = array(
   "location_name" => "United States",
    "language_name" => "English (United States)",
    "asin" => "B0756FCPPN"
);
// example #2 - a way to set a task with additional parameters
// high priority allows us to complete a task faster, but you will be charged more money.
// after a task is completed, we will send a GET request to the address you specify. Instead of $id and $tag, you will receive actual values that are relevant to this task.
$post_array[] = array(
   "location_name" => "United States",
   "language_name" => "English (United States)",
   "asin" => "B0756FCPPN",
   "priority" => 2,
   "tag" => "some_string_123",
   "pingback_url" => 'https://your-server.com/pingscript?id=$id&tag=$tag'
);
// example #3 - an alternative way to set a task
// after a task is completed, we will send the results according to the address you set in the 'postback_url' field.
$post_array[] = array(
   "location_name" => "United States",
   "language_name" => "English (United States)",
   "asin" => "B0756FCPPN",
   "postback_data" => "html",
   "postback_url" => "https://your-server.com/postbackscript"
);
// this example has a 3 elements, but in the case of large number of tasks - send up to 100 elements per POST request
if (count($post_array) > 0) {
   try {
      // POST /v3/merchant/amazon/asin/task_post
      $result = $client->post('/v3/merchant/amazon/asin/task_post', $post_array);
      print_r($result);
      // do something with post 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;
?>

const post_array = [];

post_array.push({
  "location_name": "United States",
  "language_name": "English",
  "asin": "B0756FCPPN",
  "priority": 2,
  "tag": "some_string_123",
  "pingback_url": 'https://your-server.com/pingscript?id=$id&tag=$tag'
});

const axios = require('axios');

axios({
  method: 'post',
  url: 'https://api.dataforseo.com/v3/merchant/amazon/asin/task_post',
  auth: {
    username: 'login',
    password: 'password'
  },
  data: post_array,
  headers: {
    'content-type': 'application/json'
  }
}).then(function (response) {
  var result = response['data']['tasks'];
  // Result data
  console.log(result);

}).catch(function (error) {
  console.log(error);

});

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")
post_data = dict()
# simple way to set a task
post_data[len(post_data)] = dict(
    location_name="United States",
    language_name="English (United States)",
    asin="B0756FCPPN"
)
# after a task is completed, we will send a GET request to the address you specify
# instead of $id and $tag, you will receive actual values that are relevant to this task
post_data[len(post_data)] = dict(
    location_name="United States",
    language_name="English (United States)",
    asin="B0756FCPPN",
    priority=2,
    tag="some_string_123",
    pingback_url="https://your-server.com/pingscript?id=$id&tag=$tag"
)
# after a task is completed, we will send a GET request to the address you specify
# instead of $id and $tag, you will receive actual values that are relevant to this task
post_data[len(post_data)] = dict(
    location_name="United States",
    language_name="English (United States)",
    asin="B0756FCPPN",
    postback_data="html",
    postback_url="https://your-server.com/postbackscript"
)
# POST /v3/merchant/amazon/asin/task_post
response = client.post("/v3/merchant/amazon/asin/task_post", post_data)
# you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
if response["status_code"] == 20000:
    print(response)
    # do something with result
else:
    print("error. Code: %d Message: %s" % (response["status_code"], response["status_message"]))

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_asin_task_post()
        {
            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"))) }
            };
            var postData = new List<object>();
            // example #1 - a simple way to set a task
            // this way requires you to specify a location, a language of search, and a asin.
            postData.Add(new
            {
                location_name = "United States",
                language_name = "English (United States)",
                asin = "B0756FCPPN"
            });
            // example #2 - a way to set a task with additional parameters
            // high priority allows us to complete a task faster, but you will be charged more credits.
            // after a task is completed, we will send a GET request to the address you specify. Instead of $id and $tag, you will receive actual values that are relevant to this task.
            postData.Add(new
            {
                location_name = "United States",
                language_name = "English (United States)",
                asin = "B0756FCPPN",
                priority = 2,
                tag = "some_string_123",
                pingback_url = "https://your-server.com/pingscript?id=$id&tag=$tag"
            });
            // example #3 - an alternative way to set a task
            // after a task is completed, we will send the results according to the address you set in the 'postback_url' field.
            postData.Add(new
            {
                location_name = "United States",
                language_name = "English (United States)",
                asin = "B0756FCPPN",
                postback_data = "html",
                postback_url = "https://your-server.com/postbackscript"
            });
            // POST /v3/merchant/amazon/asin/task_post
            var taskPostResponse = await httpClient.PostAsync("/v3/merchant/amazon/asin/task_post", new StringContent(JsonConvert.SerializeObject(postData)));
            var result = JsonConvert.DeserializeObject<dynamic>(await taskPostResponse.Content.ReadAsStringAsync());
            // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
            if (result.status_code == 20000)
            {
                // do something with result
                Console.WriteLine(result);
            }
            else
                Console.WriteLine($"error. Code: {result.status_code} Message: {result.status_message}");
        }
    }
}