How to solve GeeTest on PHP, Java, Python

1. Find the following GeeTest captcha parameters on the target website (usually you can find them inside initGeetest function):
gt - public website key (static)
challenge - dynamic challenge key
api_server - API domain (optional)

Important: you should get a new challenge value for each request to our API. Once captcha was loaded on the page the challenge value becomes invalid. You should inspect requests made to the website when page is loaded to identify a request that gets a new challenge value. Then you should make such request each time to get a valid challenge value.

2.Send these parameters to 2Captcha API.

With SDK (recommended)
Manually

php

python

java

csharp

go

cpp

// https://github.com/2captcha/2captcha-php

require(__DIR__ . '/../src/autoloader.php');

$solver = new \TwoCaptcha\TwoCaptcha('YOUR_API_KEY');

try {
    $result = $solver->geetest([
        'gt'        => 'f2ae6cadcf7886856696502e1d55e00c',
        'apiServer' => 'api.geetest.com',
        'challenge' => '12345678abc90123d45678ef90123a456b',
        'url'       => 'https://2captcha.com/demo/geetest',
    ]);
} catch (\Exception $e) {
    die($e->getMessage());
}

die('Captcha solved: ' . $result->code);

# https://github.com/2captcha/2captcha-python

import sys
import os
import requests
sys.path.append(os.path.dirname(os.path.dirname(os.path.realpath(__file__))))

from twocaptcha import TwoCaptcha

api_key = os.getenv('APIKEY_2CAPTCHA', 'YOUR_API_KEY')

solver = TwoCaptcha(api_key)

resp = requests.get("http://demo.2captcha.com/?type=geetest")
challenge = resp.content.decode('utf-8').split(';')[0]

try:
    result = solver.geetest(gt='f3bf6dbdcf7886856696502e1d55e00c',
                            apiServer='api.geetest.com',
                            challenge=challenge,
                            url='https://2captcha.com/demo/geetest')

except Exception as e:
    sys.exit(e)

else:
    sys.exit('solved: ' + str(result))

// https://github.com/2captcha/2captcha-java

package examples;

import com.twocaptcha.TwoCaptcha;
import com.twocaptcha.captcha.GeeTest;

public class GeeTestExample {

    public static void main(String[] args) {
        TwoCaptcha solver = new TwoCaptcha("YOUR_API_KEY");

        GeeTest captcha = new GeeTest();
        captcha.setGt("f2ae6cadcf7886856696502e1d55e00c");
        captcha.setApiServer("api.geetest.com");
        captcha.setChallenge("12345678abc90123d45678ef90123a456b");
        captcha.setUrl("https://2captcha.com/demo/geetest");

        try {
            solver.solve(captcha);
            System.out.println("Captcha solved: " + captcha.getCode());
        } catch (Exception e) {
            System.out.println("Error occurred: " + e.getMessage());
        }
    }

}

// https://github.com/2captcha/2captcha-csharp

using System;
using System.Linq;
using TwoCaptcha.Captcha;

namespace TwoCaptcha.Examples
{
    public class GeeTestExample
    {
        public void Main()
        {
            TwoCaptcha solver = new TwoCaptcha("YOUR_API_KEY");

            GeeTest captcha = new GeeTest();
            captcha.SetGt("f2ae6cadcf7886856696502e1d55e00c");
            captcha.SetApiServer("api.geetest.com");
            captcha.SetChallenge("12345678abc90123d45678ef90123a456b");
            captcha.SetUrl("https://2captcha.com/demo/geetest");

            try
            {
                solver.Solve(captcha).Wait();
                Console.WriteLine("Captcha solved: " + captcha.Code);
            }
            catch (AggregateException e)
            {
                Console.WriteLine("Error occurred: " + e.InnerExceptions.First().Message);
            }
        }
    }
}

// https://github.com/2captcha/2captcha-go

package main

import (
    "fmt"
    "log"
    "github.com/2captcha/2captcha-go"
)

func main() {
    client := api2captcha.NewClient("API_KEY")
    
    cap := api2captcha.GeeTest{
        GT: "f2ae6cadcf7886856696502e1d55e00c",
        ApiServer: "api.geetest.com",
        Challenge: "12345678abc90123d45678ef90123a456b",
        Url: "https://2captcha.com/demo/geetest",
    }
    
    code, err := client.Solve(cap.ToRequest())
    
    if err != nil {
        log.Fatal(err);
    }
    
    fmt.Println("code "+code)
}

// https://github.com/2captcha/2captcha-cpp

#include <cstdio>

#include "curl_http.hpp"
#include "api2captcha.hpp"

int main (int ac, char ** av)
{
   api2captcha::curl_http_t http;
   http.set_verbose (true);

   api2captcha::client_t client;
   client.set_http_client (&http);
   client.set_api_key (API_KEY);

   api2captcha::geetest_t cap;
   cap.set_gt ("f2ae6cadcf7886856696502e1d55e00c");
   cap.set_api_server ("api.geetest.com");
   cap.set_challenge ("12345678abc90123d45678ef90123a456b");
   cap.set_url ("https://2captcha.com/demo/geetest");

   try
   {
      client.solve (cap);
      printf ("code '%s'\n", cap.code ().c_str ());
   }
   catch (std::exception & e)
   {
      fprintf (stderr, "Failed: %s\n", e.what ());
   }

   return 0;   
}

2.1 Submit a HTTP GET or POST request to our API URL: https://2captcha.com/in.php with method set to geetest providing values found on previous step in your request as values for corresponding request parameters and also full page URL as value for pageurl.
Request URL example:

https://2captcha.com/in.php?key=1abc234de56fab7c89012d34e56fa7b8&method=geetest&gt=929c4274113891610f91fecd8f98f84a&challenge=12345678abc90123d45678ef90123a456b&api_server=api-na.geetest.com&pageurl=http://demo.2captcha.com/geetest

2.2 If everything is fine server will return the ID of your captcha:

OK|2122988149

Otherwise server will return an error code.

2.3 After 15-20 seconds send GET request to get the result:

GET https://2captcha.com/res.php?key=YOUR_API_KEY&action=get&id=2122988149

If captcha is already solved server will respond with the answer.
If captcha is not solved yet server will return CAPCHA_NOT_READY result. Repeat your request in 5 seconds. If something went wrong server will return an error code.

3. If captcha is already solved server will return the response in JSON. The response contains three values: challenge, validate and seccode:

{
    "challenge": "1a2b3456cd67890e12345fab678901c2de",
    "validate": "09fe8d7c6ba54f32e1dcb0a9fedc8765",
    "seccode": "12fe3d4c56789ba01f2e345d6789c012|jordan"
}

4. Use the values received from our API to submit your request to the target website placing the values into corresponding request fields:
geetest_challenge
geetest_validate
geetest_seccode

5. Click on "Check" button to submit the form.