RecaptchaV2EnterpriseTask

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The object contains data for Google reCAPTCHA Enterprise solving task. To provide solid universality for solving this type of task we have reproduce every piece of environment used for an automation task you plan to complete. Including, proxy access, browser's user-agent, cookies (optionally).

This type of captcha has no visual differences from ReCaptcha v.2, you can see the difference using the captcha code, for example in developer tools under the Network tab in Queries:

Request URL (anchor): https://www.google.com/recaptcha/enterprise/anchor?ar=1&k=6Lf26sUnAAAAAIKLuWNYgRsFUfmI-3Lex3xT5N-s&co=aHR0cHM6Ly8yY2FwdGNoYS5jb206NDQz&hl=en&v=1kRDYC3bfA-o6-tsWzIBvp7k&size=normal&cb=43r1q2d3mx66

This type of captcha might be solved a bit longer than usual image captcha, but this issue is compensated by the fact that g-captcha-response value we send to you is valid for the next 60 seconds after we solves your ReCaptcha2.

More on the topic in our blog

Attention!

If the proxy is authorized by IP, then be sure to add 116.203.55.208 to the white list.

Request parameters

type<string>required

RecaptchaV2EnterpriseTask

websiteURL<string>required

Address of a webpage with Google ReCaptcha Enterprise.

websiteKey<string>required

Recaptcha website key.
<div class="g-recaptcha" data-sitekey="THIS_ONE"></div>
or <iframe title="reCAPTCHA" src="...;k=6LdIFr0ZAAAAAO3vz0O0OQrtAefzdJcWQM2TMYQH&... , where 6LdIFr0ZAAAAAO3vz0O0OQrtAefzdJcWQM2TMYQH - websiteKey

enterprisePayload<string>optional

Some implementations of the reCAPTCHA Enterprise widget may contain additional parameters that are passed to the “grecaptcha.enterprise.render” method along with the sitekey. For example: <pre lang="js" ><code>grecaptcha.enterprise.render("some-div-id", { sitekey: "6Lc_aCMTAAAAABx7u2N0D1XnVbI_v6ZdbM6rYf16" theme: "dark" s: "2JvUXHNTnZl1Jb6WEvbDyB...ugQA" });</code></pre>

apiDomain<string>optional

Domain address from which to load reCAPTCHA Enterprise. For example:
- www.google.com
- www.recaptcha.net

Don't use a parameter if you don't know why it's needed.

userAgent<string>optional

Browser's User-Agent which is used in emulation. It is required that you use a signature of a modern browser, otherwise Google will ask you to "update your browser".

cookies<string>optional

Additional cookies which we must use during interaction with target page or Google.
Format: cookiename1=cookievalue1; cookiename2=cookievalue2

proxyType<string>optional

http - regular http/https proxy;
https - try this option only if "http" doesn't work (required for some custom proxies);
socks4 - socks4 proxy;
socks5 - socks5 proxy.

proxyAddress<string>optional

IPv4/IPv6 proxy IP address. Not allowed:

using of hostnames;
using transparent proxies (where you can see the client's IP);
using proxies on local machines.

proxyPort<integer>optional

Proxy port.

proxyLogin<string>optional

Proxy-server login.

proxyPassword<string>optional

Proxy-server password.

For enterprisePayload - before calling it, you need to replace the grecaptcha.enterprise.render function with your own and take the value from its parameters. The function exists after loading the script, and the captcha is usually rendered immediately or based on a page event. If the captcha is rendered with the current field s on the client, then the token will most likely not be accepted. The original function can be called without the s field.

apiDomain is the domain that hosts the API interface for interacting with reCAPTCHA, it is used to verify that the user passes the captcha.

Script

var __test_grc = undefined;

var __test_enterprise = undefined;

var __test_render = undefined;

var __test_render_widget = undefined;

var __test_render_args = undefined; // here will be the object with which render is called.

var __test_handler = {
  get: function(target, name, receiver) {
    if (name == 'enterprise') {
      return __test_enterprise ? __test_enterprise : (__test_enterprise = new Proxy(target[name], __test_handler));
    } else if (name == 'render') {
      __test_render = target[name];
      return (function(a, b) {
        __test_render_args = b;
        __test_render_widget = a;
        return __test_render(a, {sitekey: b.sitekey}); });
    } else {
      return target[name];
    }
  }
};

Object.defineProperty(window, 'grecaptcha', {
  enumerable: true,
  configurable: false,
  get: function() {
    return __test_grc;
  },
  set: function(value) {
    __test_grc = new Proxy(value, __test_handler);
  }
});

Create task method

RecaptchaV2EnterpriseTask (without proxy)
RecaptchaV2EnterpriseTask (using proxy)

POST

https://api.capmonster.cloud/createTask

Request

{
  "clientKey":"API_KEY",
  "task": {
	"type":"RecaptchaV2EnterpriseTask",
	"websiteURL":"https://mydomain.com/page-with-recaptcha-enterprise",
	"websiteKey":"6Lcg7CMUAAAAANphynKgn9YAgA4tQ2KI_iqRyTwd",
	"enterprisePayload": {
	  "s": "SOME_ADDITIONAL_TOKEN"
	}
  }
}

Response

{
  "errorId":0,
  "taskId":407533072
}

POST

https://api.capmonster.cloud/createTask

Request

{
  "clientKey":"API_KEY",
  "task": {
	"type":"RecaptchaV2EnterpriseTask",
	"websiteURL":"https://mydomain.com/page-with-recaptcha-enterprise",
	"websiteKey":"6Lcg7CMUAAAAANphynKgn9YAgA4tQ2KI_iqRyTwd",
	"enterprisePayload": {
	  "s": "SOME_ADDITIONAL_TOKEN"
	},
	"proxyType":"http",
	"proxyAddress":"8.8.8.8",
	"proxyPort":8080,
	"proxyLogin":"proxyLoginHere",
	"proxyPassword":"proxyPasswordHere",
	"userAgent":"userAgentPlaceholder"
  }
}

Response

{
  "errorId":0,
  "taskId":407533072
}

Get task result method

Use the getTaskResult method to request answer for ReCaptcha2. You will get response within 10 - 80 sec period depending on service workload.

POST

https://api.capmonster.cloud/getTaskResult

Request

{
  "clientKey":"API_KEY",
  "taskId": 407533072
}

Response

{
  "errorId":0,
  "status":"ready",
  "solution": {
	"gRecaptchaResponse":"3AHJ_VuvYIBNBW5yyv0zRYJ75VkOKvhKj9_xGBJKnQimF72rfoq3Iy-DyGHMwLAo6a3"
  }
}

Property	Type	Description
gRecaptchaResponse	String	Hash which should be inserted into Recaptcha2 submit form in `<textarea id="g-recaptcha-response" ..></textarea>`. It has a length of 500 to 2190 bytes.

How to Find All Required Parameters for Task Creation

Manually

Open your website where the captcha appears in the browser.
Right-click on the captcha element and select Inspect.

websiteKey

Public site key (sitekey). You can find the websiteKey in the Elements:

sitekeyEntpr

Or in Network requests:

sitekeyEntpr1

Automatically

A convenient way to automate the search for all necessary parameters. Some parameters are regenerated every time the page loads, so you'll need to extract them through a browser — either regular or headless (e.g., using Playwright). Since the values of dynamic parameters are short-lived, the captcha must be solved immediately after retrieving them.

Important!

The code snippets provided are basic examples for familiarization with extracting the required parameters. The exact implementation will depend on your captcha page, its structure, and the HTML elements/selectors it uses.

JavaScript
Python
C#

Show Code (in browser)

(() => {
  const payload = {};
  let sitekey = null;

  document.querySelectorAll('.g-recaptcha').forEach(div => {
    if (div.dataset.sitekey) sitekey = div.dataset.sitekey;

    for (const [key, value] of Object.entries(div.dataset)) {
      if (key !== 'sitekey') {
        payload[key] = value;
      }
    }
  });

  const scriptTags = Array.from(document.querySelectorAll("script:not([src])"));
  const regex = /grecaptcha\.enterprise\.render\([^,]+,\s*\{(.*?)\}/s;

  scriptTags.forEach(tag => {
    const match = regex.exec(tag.textContent);
    if (match) {
      const obj = match[1];
      const paramRegex = /(\w+)\s*:\s*['"]([^'"]+)['"]/g;
      let p;
      while ((p = paramRegex.exec(obj)) !== null) {
        const key = p[1];
        const val = p[2];
        if (key === "sitekey") sitekey = val;
        else payload[key] = val;
      }
    }
  });

  console.log("sitekey:", sitekey);
  console.log("enterprisePayload:", payload);
})();

Show Code (Node.js)

import { chromium } from 'playwright';

(async () => {
  const browser = await chromium.launch({ headless: false });
  const context = await browser.newContext();
  const page = await context.newPage();

  let sitekey = null;
  const enterprisePayload = {};

  const targetUrl = 'https://example.com';
  await page.goto(targetUrl, { timeout: 60000 });
  await page.waitForTimeout(3000);

  const recaptchaDivs = await page.$$('.g-recaptcha');
  for (const div of recaptchaDivs) {
    const attrs = ['data-sitekey', 'data-s', 'data-cdata', 'data-type', 'data-context'];
    for (const attr of attrs) {
      const val = await div.getAttribute(attr);
      if (val) {
        const key = attr.replace('data-', '');
        if (key === 'sitekey') {
          sitekey = val;
        } else {
          enterprisePayload[key] = val;
        }
      }
    }
  }

  const inlineScripts = await page.$$eval("script:not([src])", (scripts) =>
    scripts.map((s) => s.textContent)
  );

  const pattern = /grecaptcha\.enterprise\.render\([^,]+,\s*\{(.*?)\}/s;

  for (const script of inlineScripts) {
    const match = script.match(pattern);
    if (match) {
      const obj = match[1];
      const keyValuePattern = /(\w+)\s*:\s*['"]([^'"]+)['"]/g;
      let keyValueMatch;
      while ((keyValueMatch = keyValuePattern.exec(obj)) !== null) {
        const key = keyValueMatch[1];
        const val = keyValueMatch[2];
        if (key === 'sitekey') {
          sitekey = val;
        } else {
          enterprisePayload[key] = val;
        }
      }
      break;
    }
  }

  console.log(`sitekey: ${sitekey}`);
  console.log("enterprisePayload:");
  for (const [key, value] of Object.entries(enterprisePayload)) {
    console.log(`  ${key}: ${value}`);
  }

  await browser.close();
})();

Show Code

import asyncio
import re
from playwright.async_api import async_playwright

async def extract_recaptcha_v2_enterprise(url):
    async with async_playwright() as p:
        browser = await p.chromium.launch(headless=False)
        context = await browser.new_context()
        page = await context.new_page()

        sitekey = None
        enterprise_payload = {}

        await page.goto(url, timeout=60000)
        await page.wait_for_timeout(3000)

        recaptcha_divs = await page.query_selector_all(".g-recaptcha")
        for div in recaptcha_divs:
            attrs = ["data-sitekey", "data-s", "data-cdata", "data-type", "data-context"]
            for attr in attrs:
                val = await div.get_attribute(attr)
                if val:
                    key = attr.replace("data-", "")
                    if key == "sitekey":
                        sitekey = val
                    else:
                        enterprise_payload[key] = val

        inline_scripts = await page.locator("script:not([src])").all_text_contents()
        pattern = re.compile(r"grecaptcha\.enterprise\.render\([^,]+,\s*\{(.*?)\}", re.DOTALL)

        for script in inline_scripts:
            match = pattern.search(script)
            if match:
                obj = match.group(1)
                for pair in re.finditer(r"(\w+)\s*:\s*['\"]([^'\"]+)['\"]", obj):
                    key = pair.group(1)
                    val = pair.group(2)
                    if key == "sitekey":
                        sitekey = val
                    else:
                        enterprise_payload[key] = val
                break

        await browser.close()

        print(f"sitekey: {sitekey}")
        print("enterprisePayload:")
        for k, v in enterprise_payload.items():
            print(f"  {k}: {v}")

asyncio.run(extract_recaptcha_v2_enterprise("https://example.com"))

Show Code

using System;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Microsoft.Playwright;
using System.Collections.Generic;

class Program
{
    public static async Task Main(string[] args)
    {
        await ExtractRecaptchaV2Enterprise("https://example.com");
    }

    public static async Task ExtractRecaptchaV2Enterprise(string url)
    {
        using var playwright = await Playwright.CreateAsync();
        var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false });
        var context = await browser.NewContextAsync();
        var page = await context.NewPageAsync();

        string sitekey = null;
        var enterprisePayload = new Dictionary<string, string>();

        await page.GotoAsync(url, new PageGotoOptions { Timeout = 60000 });
        await page.WaitForTimeoutAsync(3000);

        var recaptchaDivs = await page.QuerySelectorAllAsync(".g-recaptcha");

        foreach (var div in recaptchaDivs)
        {
            var sitekeyAttr = await div.GetAttributeAsync("data-sitekey");
            if (!string.IsNullOrEmpty(sitekeyAttr))
                sitekey = sitekeyAttr;

            var attributes = new[] { "data-s", "data-cdata", "data-type", "data-context" };
            foreach (var attr in attributes)
            {
                var value = await div.GetAttributeAsync(attr);
                if (!string.IsNullOrEmpty(value))
                {
                    enterprisePayload[attr.Replace("data-", "")] = value;
                }
            }
        }

        var scripts = await page.Locator("script:not([src])").AllTextContentsAsync();
        var pattern = new Regex(@"grecaptcha\.enterprise\.render\([^,]+,\s*\{(.*?)\}", 
        RegexOptions.Singleline);

        foreach (var script in scripts)
        {
            var match = pattern.Match(script);
            if (match.Success)
            {
                var obj = match.Groups[1].Value;

                var keyMatches = Regex.Matches(obj, @"(\w+)\s*:\s*['""]([^'""]+)['""]");
                foreach (Match m in keyMatches)
                {
                    var key = m.Groups[1].Value.Trim();
                    var val = m.Groups[2].Value.Trim();

                    if (key == "sitekey")
                        sitekey = val;
                    else
                        enterprisePayload[key] = val;
                }
                break;
            }
        }

        Console.WriteLine($"Sitekey: {sitekey}");
        Console.WriteLine("Enterprise Payload:");
        foreach (var kv in enterprisePayload)
        {
            Console.WriteLine($"  {kv.Key}: {kv.Value}");
        }

        await browser.CloseAsync();
    }
}

Use SDK Library

JavaScript
Python
C#

// https://github.com/ZennoLab/capmonstercloud-client-js

import { CapMonsterCloudClientFactory, ClientOptions, RecaptchaV2EnterpriseRequest, /*RecaptchaV2EnterpriseRequest*/ } from '@zennolab_com/capmonstercloud-client';

document.addEventListener('DOMContentLoaded', async () => {
  const cmcClient = CapMonsterCloudClientFactory.Create(new ClientOptions({ clientKey: '<your capmonster.cloud API key>' }));
  console.log(await cmcClient.getBalance());

  const recaptchaV2EnterpriseRequest = new RecaptchaV2EnterpriseRequest({
    websiteURL: 'https://mydomain.com/page-with-recaptcha-enterprise',
    websiteKey: '6Lcg7CMUAAAAANphynKgn9YAgA4tQ2KI_iqRyTwd',
    enterprisePayload: {
      s: 'SOME_ADDITIONAL_TOKEN',
    },
  });

  // const recaptchaV2EnterpriseRequest = new RecaptchaV2EnterpriseRequest({
  //   websiteURL: 'https://mydomain.com/page-with-recaptcha-enterprise',
  //   websiteKey: '6Lcg7CMUAAAAANphynKgn9YAgA4tQ2KI_iqRyTwd',
  //   enterprisePayload: {
  //     s: 'SOME_ADDITIONAL_TOKEN',
  //   },
  //   proxyType: 'http',
  //   proxyAddress: '8.8.8.8',
  //   proxyPort: 8080,
  //   proxyLogin: 'proxyLoginHere',
  //   proxyPassword: 'proxyPasswordHere',
  //   userAgent: 'userAgentPlaceholder',
  // });

  console.log(await cmcClient.Solve(recaptchaV2EnterpriseRequest));
});

More on the topic in our blog

# https://github.com/ZennoLab/capmonstercloud-client-python

# RecaptchaV2Enterprise

import asyncio
from capmonstercloudclient import CapMonsterClient, ClientOptions
from capmonstercloudclient.requests import RecaptchaV2EnterpriseRequest

client_options = ClientOptions(api_key="your_api_key")  # Replace with your CapMonster Cloud API key
cap_monster_client = CapMonsterClient(options=client_options)

recaptcha2request = RecaptchaV2EnterpriseRequest(
    websiteUrl="https://example.com",  # Website with the captcha
    websiteKey="6Lf26sUnAAAAAIKLuWNYgRsFUfmI-3Lex3xT5N-s",  # Replace with your websiteKey
    enterprisePayload={
        "s": "SOME_ADDITIONAL_TOKEN" 
    }
)

async def solve_captcha():
    return await cap_monster_client.solve_captcha(recaptcha2request)

responses = asyncio.run(solve_captcha())
print(responses)

# ReCaptchaV2Enterprise:

import asyncio
from capmonstercloudclient import CapMonsterClient, ClientOptions
from capmonstercloudclient.requests import RecaptchaV2EnterpriseRequest

client_options = ClientOptions(api_key="your_api_key")  # Replace with your CapMonster Cloud API key
cap_monster_client = CapMonsterClient(options=client_options)

recaptcha2request = RecaptchaV2EnterpriseRequest(
    websiteUrl="https://example.com",  # Website with the captcha
    websiteKey="6Lf26sUnAAAAAIKLuWNYgRsFUfmI-3Lex3xT5N-s",  # Replace with your websiteKey
    enterprisePayload={
        "s": "SOME_ADDITIONAL_TOKEN"  
    },
    proxy_type="http",  # Proxy type (http, https, socks5)
    proxy_address="8.8.8.8",  
    proxy_port=8080,  
    proxy_login="proxyLoginHere",  
    proxy_password="proxyPasswordHere"
)

async def solve_captcha():
    return await cap_monster_client.solve_captcha(recaptcha2request)

responses = asyncio.run(solve_captcha())
print(responses)

More on the topic in our blog

// https://github.com/ZennoLab/capmonstercloud-client-dotnet

// RecaptchaV2Enterprise

using Zennolab.CapMonsterCloud.Requests;
using Zennolab.CapMonsterCloud;

class Program
{
    static async Task Main(string[] args)
    {
        var clientOptions = new ClientOptions
        {
            ClientKey = "your_api_key" // Replace with your CapMonster Cloud API key
        };

        var cmCloudClient = CapMonsterCloudClientFactory.Create(clientOptions);

        var recaptchaV2EnterpriseRequest = new RecaptchaV2EnterpriseRequest
        {
            WebsiteUrl = "https://example.com", // Website with the captcha
            WebsiteKey = "6Lf26sUnAAAAAIKLuWNYgRsFUfmI-3Lex3xT5N-s", // Replace with your website key
            EnterprisePayload = "{\"s\":\"SOME_ADDITIONAL_TOKEN\"}"
        };

        var recaptchaV2EnterpriseResult = await cmCloudClient.SolveAsync(recaptchaV2EnterpriseRequest);

        Console.WriteLine("Captcha Solution: " + recaptchaV2EnterpriseResult.Solution.Value);
    }
}

// ReCaptchaV2Enterprise:

using Zennolab.CapMonsterCloud.Requests;
using Zennolab.CapMonsterCloud;

class Program
{
    static async Task Main(string[] args)
    {
        var clientOptions = new ClientOptions
        {
            ClientKey = "your_api_key" // Replace with your CapMonster Cloud API key
        };

        var cmCloudClient = CapMonsterCloudClientFactory.Create(clientOptions);

        var recaptchaV2EnterpriseRequest = new RecaptchaV2EnterpriseRequest
        {
            WebsiteUrl = "https://example.com", // Website with the captcha
            WebsiteKey = "6Lf26sUnAAAAAIKLuWNYgRsFUfmI-3Lex3xT5N-s", // Replace with your website key
            EnterprisePayload = "{\"s\":\"SOME_ADDITIONAL_TOKEN\"}",
            ProxyType = ProxyType.Http,
            ProxyAddress = "8.8.8.8",
            ProxyPort = 8080,
            ProxyLogin = "proxyLoginHere",
            ProxyPassword = "proxyPasswordHere"
        };

        var recaptchaV2EnterpriseResult = await cmCloudClient.SolveAsync(recaptchaV2EnterpriseRequest);

        Console.WriteLine("Captcha Solution: " + recaptchaV2EnterpriseResult.Solution.Value);
    }
}

More on the topic in our blog

RecaptchaV2EnterpriseTask

Request parameters​

Create task method​

Get task result method​

How to Find All Required Parameters for Task Creation​

Manually​

websiteKey​

Automatically​

Use SDK Library​

Request parameters

Create task method

Get task result method

How to Find All Required Parameters for Task Creation

Manually

websiteKey

Automatically

Use SDK Library