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/google/organic/live/regular" \
--header "Authorization: Basic ${cred}"  \
--header "Content-Type: application/json" \
--data-raw '[
    {
        "language_code": "en",
        "location_code": 2840,
        "keyword": "albert einstein"
    }
]'

<?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-access
	$client = new RestClient($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();
// You can set only one task at a time
$post_array[] = array(
	"language_code" => "en",
	"location_code" => 2840,
	"keyword" => mb_convert_encoding("albert einstein", "UTF-8")
);
try {
	// POST /v3/serp/google/organic/live/regular
	// in addition to 'google' and 'organic' you can also set other search engine and type parameters
	// the full list of possible parameters is available in documentation
	$result = $client->post('/v3/serp/google/organic/live/regular', $post_array);
	print_r($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()
# You can set only one task at a time
post_data[len(post_data)] = dict(
    language_code="en",
    location_code=2840,
    keyword="albert einstein"
)
# POST /v3/serp/google/organic/live/regular
# in addition to 'google' and 'organic' you can also set other search engine and type parameters
# the full list of possible parameters is available in documentation
response = client.post("/v3/serp/google/organic/live/regular", 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 axios = require('axios');

axios({
    method: 'post',
    url: 'https://api.dataforseo.com/v3/serp/google/organic/live/regular',
    auth: {
        username: 'login',
        password: 'password'
    },
    data: [{
        "keyword": encodeURI("albert einstein"),
        "language_code": "en",
        "location_code": 2840
    }],
    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.Threading.Tasks;

namespace DataForSeoDemos
{
    public static partial class Demos
    {
        public static async Task serp_live_regular()
        {
            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>();
            // You can set only one task at a time
            postData.Add(new
            {
                language_code = "en",
                location_code = 2840,
                keyword = "albert einstein"
            });
            // POST /v3/serp/google/organic/live/regular
            // in addition to 'google' and 'organic' 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/organic/live/regular", 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": "0.1.20200129",
  "status_code": 20000,
  "status_message": "Ok.",
  "time": "12.2397 sec.",
  "cost": 0.003,
  "tasks_count": 1,
  "tasks_error": 0,
  "tasks": [
    {
      "id": "01301234-1535-0121-0000-9c8e396a59cc",
      "status_code": 20000,
      "status_message": "Ok.",
      "time": "12.1329 sec.",
      "cost": 0.003,
      "result_count": 1,
      "path": [
        "v3",
        "serp",
        "google",
        "organic",
        "live",
        "regular"
      ],
      "data": {
        "api": "serp",
        "function": "live",
        "se": "google",
        "se_type": "organic",
        "language_name": "English",
        "location_name": "United States",
        "keyword": "flight ticket new york san francisco",
        "tag": "tag2",
        "device": "desktop",
        "os": "windows"
      },
      "result": [
        {
          "keyword": "flight ticket new york san francisco",
          "type": "organic",
          "se_domain": "google.com",
          "location_code": 2840,
          "language_code": "en",
          "check_url": "https://www.google.com/search?q=flight%20ticket%20new%20york%20san%20francisco&num=100&hl=en&gl=US&gws_rd=cr&ie=UTF-8&oe=UTF-8&uule=w+CAIQIFISCQs2MuSEtepUEUK33kOSuTsc",
          "datetime": "2019-11-15 12:57:46 +00:00",
          "spell": null,
          "refinement_chips": {
            "type": "refinement_chips",
            "xpath": "/html[1]/body[1]/div[3]/div[1]/div[9]/div[1]/div[1]/div[3]/div[1]/div[1]",
            "items": [
              {
                "type": "refinement_chips_element",
                "title": "Remote",
                "url": "https://www.google.com/search?num=100&sca_esv=427163c40a0d98b7&hl=en&gl=US&glp=1&q=bristol+temp+agencies+remote&uds=ADvngMjcH0KdF7qGWtwTBrP0nt7drlQNXJ_q6WhUnfcnlFQAOVqvQ09aiEx7jUP4Wb5sg6FzKTGyEoBQg36hfgreicnnhtBQv8H25iRkUIMWBSqTcu0nGLObB57jKDn4sIHqgjkv6AqtXzA0gTV6n6-p1_aOUPMmYdgJOPy5xybgxI0ZY3-OZUg&sa=X&ved=2ahUKEwjEjMPzrvyIAxVgpIkEHYTyBqEQxKsJegQIHRAB&ictx=0",
                "domain": "www.google.com",
                "options": null
              },
              {
                "type": "refinement_chips_element",
                "title": "Date posted",
                "url": null,
                "domain": null,
                "options": [
                  {
                    "type": "refinement_chips_option",
                    "title": "Yesterday",
                    "url": "https://www.google.com/search?num=100&sca_esv=427163c40a0d98b7&hl=en&gl=US&glp=1&q=bristol+temp+agencies+since+yesterday&uds=ADvngMjcH0KdF7qGWtwTBrP0nt7d1cxhUU_4I1tnZ_YIEcACz8ZYvzwewv2vtaifFRGAtrClbFOcrHbTAbAeXm1jREcC6VS1VsCvY-sITnX4ozb-ILgfWEVwq_Z5ROUTUSIPShEnKXD5sUUbZbocrG609xSmt2d98g8y8m1lGjX2kp2G7tWTnMoyaYhx7tPHFsc1SlxiTTuylOmQpyaET98nEnMhDFUw8hSQnpfQcpEDEdBLwrOxN3gOZC4RtcHuKTyeCrFRnaDjQ17dNosh1yiBWrSXB9e1dQF-1Pt17wXCHwRUCH6wH0DbAN-oCNd7lMT2v24eI8rDkLQP3kTLpzGMUZReaWIAPw&sa=X&ved=2ahUKEwjEjMPzrvyIAxVgpIkEHYTyBqEQkbEKegQIDxAD",
                    "domain": "www.google.com"
                  },
                  {
                    "type": "refinement_chips_option",
                    "title": "Last 3 days",
                    "url": "https://www.google.com/search?num=100&sca_esv=427163c40a0d98b7&hl=en&gl=US&glp=1&q=bristol+temp+agencies+in+the+last+3+days&uds=ADvngMjcH0KdF7qGWtwTBrP0nt7dLQVdkfQJDu14-gF_eQoKa39tQdXyMUfu3HnnM3Pu4g5hOzwEez_H8t-yULnPJEgal7YGml0mtSaIuH3YeuIhPq5mBSo_ECo7hOJVwSRGkksXQg-RdTy8GhoT8Qm-ZFkyAQnSLmnlmv0Rm042YAlQ6JFqnfOW0VIOgTeTdYm6SLpzQ3a6YSvEf2tau3pEKxnGWKleL613vj0tLBWg4Jhsa0trdMkFPHDQYhc2caGQ8cmSYU4cqdB2Eq3PsNGgjgebvt7_7bbvjixC19O4L9ZB02rwY0EP30_mYAeTG9lYAx8ZJvGDslVLp0DHS93P8ynaiA7Bbw&sa=X&ved=2ahUKEwjEjMPzrvyIAxVgpIkEHYTyBqEQkbEKegQIDxAE",
                    "domain": "www.google.com"
                  }
                ]
              }
            ]
          },
          "item_types": [
            "paid",
            "organic",
            "ai_overview"
          ],
          "se_results_count": 85600000,
          "pages_count": 1,
          "items_count": 96,
          "items": [
            {
              "type": "featured_snippet",
              "rank_group": 1,
              "rank_absolute": 1,
              "page": 1,
              "domain": "www.rome.net",
              "title": "Rome Metro - Lines, hours, fares and Rome metro maps",
              "description": "Most important metro stationsCipro - Musei Vaticani: The closest stop to the Vatican Museums and to the Sistine Chapel.Ottaviano - San Pietro: This station is a few minutes' walk from St. Peter's Square and St. Peter's Basilica.Spagna: Very convenient for visiting Piazza di Spagna and Villa Borghese.More items...",
              "url": "https://www.rome.net/metro",
              "breadcrumb": null
            },
            {
              "type": "paid",
              "rank_group": 1,
              "rank_absolute": 2,
              "page": 1,
              "domain": "www.bookingbuddy.com",
              "title": "Flights To Lwo | Unbelievably Cheap Flights | BookingBuddy.com‎",
              "description": "Compare Airlines & Sites. Cheap Flights on BookingBuddy, a TripAdvisor Company",
              "url": "https://www.bookingbuddy.com/en/hero/",
              "breadcrumb": "www.bookingbuddy.com/Flights"
            },
            {
              "type": "paid",
              "rank_group": 2,
              "rank_absolute": 3,
              "page": 1,
              "domain": "www.trip.com",
              "title": "Cheap Flight Tickets | Search & Find Deals on Flights | trip.com‎",
              "description": "Wide Selection of Cheap Flights Online. Explore & Save with Trip.com! Fast, Easy & Secure...",
              "url": "https://www.trip.com/flights/index?utm_campaign=GG_SE_All_en_Flight_Generic_NA_Phrase",
              "breadcrumb": "www.trip.com/"
            },
            {
              "type": "paid",
              "rank_group": 3,
              "rank_absolute": 4,
              "page": 1,
              "domain": "www.kayak.com",
              "title": "Find the Cheapest Flights | Search, Compare & Save Today‎",
              "description": "Cheap Flights, Airline Tickets and Flight Deals. Compare 100s of Airlines Worldwide. Search...",
              "url": "https://www.kayak.com/horizon/sem/flights/general",
              "breadcrumb": "www.kayak.com/flights"
            },
            {
              "type": "organic",
              "rank_group": 1,
              "rank_absolute": 5,
              "page": 1,
              "domain": "www.kayak.com",
              "title": "Cheap Flights from New York to San Francisco from $182 ...",
              "description": "Fly from New York to San Francisco on Frontier from $182, United Airlines from ... the cheapest round-trip tickets were found on Frontier ($182), United Airlines ...",
              "url": "https://www.kayak.com/flight-routes/New-York-NYC/San-Francisco-SFO",
              "breadcrumb": "https://www.kayak.com › Flights › North America › United States › California"
            },
            {
              "type": "organic",
              "rank_group": 2,
              "rank_absolute": 6,
              "page": 1,
              "domain": "www.skyscanner.com",
              "title": "Cheap flights from New York to San Francisco SFO from $123 ...",
              "description": "Flight information New York to San Francisco International .... tool will help you find the cheapest tickets from New York in San Francisco in just a few clicks.",
              "url": "https://www.skyscanner.com/routes/nyca/sfo/new-york-to-san-francisco-international.html",
              "breadcrumb": "https://www.skyscanner.com › United States › New York"
            },
            {
              "type": "organic",
              "rank_group": 3,
              "rank_absolute": 7,
              "page": 1,
              "domain": "www.expedia.com",
              "title": "JFK to SFO: Flights from New York to San Francisco for 2019 ...",
              "description": "Book your New York (JFK) to San Francisco (SFO) flight with our Best Price ... How much is a plane ticket to San Francisco (SFO) from New York (JFK)?.",
              "url": "https://www.expedia.com/lp/flights/jfk/sfo/new-york-to-san-francisco",
              "breadcrumb": "https://www.expedia.com › flights › jfk › sfo › new-york-to-san-francisco"
            },
            {
              "type": "organic",
              "rank_group": 94,
              "rank_absolute": 97,
              "page": 1,
              "domain": "www.ethiopianairlines.com",
              "title": "Ethiopian Airlines | Book your next flight online and Fly Ethiopian",
              "description": "Fly to your Favorite International Destination with Ethiopian Airlines. Book your Flights Online for Best Offers/Discounts and Enjoy African Flavored Hospitality.",
              "url": "https://www.ethiopianairlines.com/",
              "breadcrumb": "https://www.ethiopianairlines.com"
            },
            {
              "type": "organic",
              "rank_group": 95,
              "rank_absolute": 98,
              "page": 1,
              "domain": "www.vietnamairlines.com",
              "title": "Vietnam Airlines | Reach Further | Official website",
              "description": "Great value fares with Vietnam Airlines. Book today and save! Skytrax – 4 Star airline. Official website. Earn frequent flyer miles with Lotusmiles.",
              "url": "https://www.vietnamairlines.com/",
              "breadcrumb": "https://www.vietnamairlines.com"
            },
            {
              "type": "organic",
              "rank_group": 96,
              "rank_absolute": 99,
              "page": 1,
              "domain": "books.google.com",
              "title": "Code of Federal Regulations: 1985-1999",
              "description": "A purchases in New York a round-trip ticket for transportation by air from New York to ... B purchases a ticket in San Francisco for Combination rail and water ...",
              "url": "https://books.google.com/books?id=av3umFsqbAEC&pg=PA305&lpg=PA305&dq=flight+ticket+new+york+san+francisco&source=bl&ots=fJJY5RUS9l&sig=ACfU3U16ejUqNf23jHD32QNCxDCa05Vn9g&hl=en&ppis=_e&sa=X&ved=2ahUKEwjs_4OnouzlAhXJ4zgGHeBcD3oQ6AEwdXoECHEQAQ",
              "breadcrumb": "https://books.google.com › books"
            }
          ]
        }
      ]
    }
  ]
}