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)" \
curl --location --request POST "https://api.dataforseo.com/v3/serp/{{low_se_name}}/{{low_se_type}}/task_post" \
--header "Authorization: Basic ${cred}"  \
--header "Content-Type: application/json" \
--data-raw "[
    {
        "language_code": "en",
        "location_code": 2840,
        "image_url": "https://dataforseo.com/wp-content/uploads/2016/11/data_for_seo_light_429.png"
    }
]"


        

<?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 a image_url.
$post_array[] = array(
	"language_code" => "en",
    "location_code" => 2840,
    "image_url" => "https://dataforseo.com/wp-content/uploads/2016/11/data_for_seo_light_429.png"
);
// 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.
$post_array[] = array(
	"location_name" => "New York,New York,United States",
	"language_name" => "English",
	"image_url" => "https://dataforseo.com/wp-content/uploads/2016/11/data_for_seo_light_429.png",
	"priority" => 2,
	"tag" => "some_string_123",
	"pingback_url" => 'https://your-server.com/pingscript?id=$id&tag=$tag'
);
// this example has a 2 elements, but in the case of large number of tasks - send up to 100 elements per POST request
if (count($post_array) > 0) {
	try {
		// POST /v3/serp/google/search_by_image/task_post
		$result = $client->post('/v3/serp/google/search_by_image/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;
?>

            

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()
# example #1 - a simple way to set a task
# this way requires you to specify a location, a language of search, and a image_url.
post_data[len(post_data)] = dict(
    language_code="en",
    location_code=2840,
    image_url="https://dataforseo.com/wp-content/uploads/2016/11/data_for_seo_light_429.png"
)
# 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.
# after a task is completed, we will send a GET request to the address you specify. Instead of $id and $tag, you will receive actual values that are relevant to this task.
post_data[len(post_data)] = dict(
    language_name="English",
    location_name="United States",
    image_url="https://dataforseo.com/wp-content/uploads/2016/11/data_for_seo_light_429.png",
    priority=2,
    tag="some_string_123",
    pingback_url="https://your-server.com/pingscript?id=$id&tag=$tag"
)
# POST /v3/serp/google/search_by_image/task_post
# the full list of possible parameters is available in documentation
response = client.post("/v3/serp/google/search_by_image/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"]))


        

            

const post_array = [];

post_array.push({
    "language_code": "en",
    "location_code": 2840,
    "keyword": encodeURI("albert einstein")
});

const axios = require('axios');

axios({
    method: 'post',
    url: 'https://api.dataforseo.com/v3/serp/google/search_by_image/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);
});


        

            

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 serp_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 image_url.
            postData.Add(new
            {
                language_code = "en",
                location_code = 2840,
                image_url = "https://dataforseo.com/wp-content/uploads/2016/11/data_for_seo_light_429.png"
            });
            // 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 $tag, you will receive actual values that are relevant to this task.
            postData.Add(new
            {
                language_name = "English",
                location_name = "United States",
                image_url = "https://dataforseo.com/wp-content/uploads/2016/11/data_for_seo_light_429.png",
                priority = 2,
                tag = "some_string_123",
                pingback_url = "https://your-server.com/pingscript?id=$id&tag=$tag"
            });
            // POST /v3/serp/google/search_by_image/task_post
            // in addition to 'google' and 'search_by_image' you can also set other search engine and type parameters
            // the full list of possible parameters is available in documentation
            var taskPostResponse = await httpClient.PostAsync("/v3/serp/google/search_by_image/task_post", new StringContent(JsonConvert.SerializeObject(postData)));
            var result = JsonConvert.DeserializeObject(await taskPostResponse.Content.ReadAsStringAsync());
            // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
            if (result.status_code == 20000)
            {
                // do something with result
                Console.WriteLine(result);
            }
            else
                Console.WriteLine($"error. Code: {result.status_code} Message: {result.status_message}");
        }
    }
}


        

The above command returns JSON structured like this:

{
  "version": "0.1.20200923",
  "status_code": 20000,
  "status_message": "Ok.",
  "time": "0.0926 sec.",
  "cost": 0.0015,
  "tasks_count": 1,
  "tasks_error": 0,
  "tasks": [
    {
      "id": "09291721-1535-0066-0000-dbd5370d3547",
      "status_code": 20100,
      "status_message": "Task Created.",
      "time": "0.0044 sec.",
      "cost": 0.0015,
      "result_count": 0,
      "path": [
        "v3",
        "serp",
        "google",
        "search_by_image",
        "task_post"
      ],
      "data": {
        "api": "serp",
        "function": "task_post",
        "se": "google",
        "se_type": "search_by_image",
        "image_url": "https://dataforseo.com/wp-content/uploads/2016/11/data_for_seo_light_429.png",
        "language_name": "English",
        "location_name": "United States",
        "priority": 2,
        "device": "desktop",
        "os": "windows"
      },
      "result": null
    }
  ]
}