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

            

# Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-dashboard 
login="login" 
password="password" 
cred="$(printf ${login}:${password} | base64)" 
curl --location --request POST "https://api.dataforseo.com/v3/domain_analytics/similarweb/task_post" 
--header "Authorization: Basic ${cred}"  
--header "Content-Type: application/json" 
--data-raw "[
    {
        "target": "dataforseo.com",
        "tag": "some_string_123",
        "pingback_url": "https://your-server.com/pingscript?id=$id&tag=$tag"
    }
]"


        

<?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/';
try {
	// Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-dashboard
	$client = new RestClient($api_url, null, 'login', 'password');
} 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";
	exit();
}
$post_array = array();
// example #1 - a simple way to set a task
$post_array[] = array(
	"target" => "dataforseo.com"
);
// example #2 - a way to set a task with additional parameters
// this way you need to specify a domain of the website in the field "target".
// 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.
$post_array[] = array(
	"target" => "dataforseo.com",
	"tag" => "some_string_123",
	"pingback_url" => 'https://your-server.com/pingscript?id=$id&tag=$tag'
);
try {
	// POST /v3/domain_analytics/similarweb/task_post
	$result = $client->post('/v3/domain_analytics/similarweb/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
post_data[len(post_data)] = dict(
    target="dataforseo.com"
)
# example #2 - a way to set a task with additional parameters
# this way you need to specify a domain of the website in the field "target".
# after a task is completed, we will send a GET request to the address you specify. Instead of $id and $tag, you will receive actual values that are relevant to this task.
post_data[len(post_data)] = dict(
    target="dataforseo.com",
    tag="some_string_123",
    pingback_url="https://your-server.com/pingscript?id=$id&tag=$tag"
)
# POST /v3/domain_analytics/similarweb/task_post
response = client.post("/v3/domain_analytics/similarweb/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({
  "target": "dataforseo.com",
  "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/domain_analytics/similarweb/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 domain_analytics_similarweb_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-dashboard
                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
            postData.Add(new
            {
                target = "dataforseo.com"
            });
            // example #2 - a way to set a task with additional parameters
            // this way you need to specify a domain of the website in the field "target".
            // after a task is completed, we will send a GET request to the address you specify. Instead of $id and $tag, you will receive actual values that are relevant to this task.
            postData.Add(new
            {
                target = "dataforseo.com",
                tag = "some_string_123",
                pingback_url = "https://your-server.com/pingscript?id=$id&tag=$tag"
            });
            // POST /v3/domain_analytics/similarweb/task_post
            var taskPostResponse = await httpClient.PostAsync("/v3/domain_analytics/similarweb/task_post", new StringContent(JsonConvert.SerializeObject(postData)));
            var result = JsonConvert.DeserializeObject<dynamic>(await taskPostResponse.Content.ReadAsStringAsync());
            // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
            if (result.status_code == 20000)
            {
                // do something with result
                Console.WriteLine(result);
            }
            else
                Console.WriteLine($"error. Code: {result.status_code} Message: {result.status_message}");
        }
    }
}


        

The above command returns JSON structured like this:

{
  "version": "0.1.20200203",
  "status_code": 20000,
  "status_message": "Ok.",
  "time": "0.1174 sec.",
  "cost": 0.02,
  "tasks_count": 2,
  "tasks_error": 0,
  "tasks": [
    {
      "id": "02051146-0696-0002-0000-8e09adb105a6",
      "status_code": 20100,
      "status_message": "Task Created.",
      "time": "0.0084 sec.",
      "cost": 0.01,
      "result_count": 0,
      "path": [
        "v3",
        "domain_analytics",
        "similarweb",
        "task_post"
      ],
      "data": {
        "api": "domain_analytics",
        "function": "task_post",
        "se": "similarweb",
        "target": "dataforseo.com"
      },
      "result": null
    },
    {
      "id": "02051146-0696-0002-0000-8a55d8f1c344",
      "status_code": 20100,
      "status_message": "Task Created.",
      "time": "0.0647 sec.",
      "cost": 0.01,
      "result_count": 0,
      "path": [
        "v3",
        "domain_analytics",
        "similarweb",
        "task_post"
      ],
      "data": {
        "api": "domain_analytics",
        "function": "task_post",
        "se": "similarweb",
        "target": "dataforseo.com",
        "tag": "some_string_123",
        "pingback_url": "https://your-server.com/pingscript?id=$id&tag=$tag"
      },
      "result": null
    }
  ]
}