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Golang Module for 2Captcha API

The easiest way to quickly integrate 2Captcha into your code to automate solving of any type of captcha. Examples of API requests for different captcha types are available on the Golang captcha solver page.

Installation

To install the api client, use this:

go get -u github.com/2captcha/2captcha-go

Configuration

Import the module like this:

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

Client instance can be created like this:

client := api2captcha.NewClient("YOUR_API_KEY")

There are few options that can be configured:

client.SoftId = 123
client.Callback = "https://your.site/result-receiver"
client.DefaultTimeout = 120
client.RecaptchaTimeout = 600
client.PollingInterval = 100

Client instance options

Option Default value Description
soft_id 4583 Your software ID obtained after publishing in 2captcha software catalog
callback - URL of your web-sever that receives the captcha recognition result. The URl should be first registered in pingback settings of your account
default_timeout 120 Timeout in seconds for all captcha types except reCAPTCHA. Defines how long the module tries to get the answer from res.php API endpoint
recaptcha_timeout 600 Timeout for reCAPTCHA in seconds. Defines how long the module tries to get the answer from res.php API endpoint
polling_interval 10 Interval in seconds between requests to res.php API endpoint, setting values less than 5 seconds is not recommended

IMPORTANT: once callback URL is defined for client instance, all methods return only the captcha ID and DO NOT poll the API to get the result. The result will be sent to the callback URL.

To get the answer manually use GetResult method

Solve captcha

When you submit any image-based captcha use can provide additional options to help 2captcha workers to solve it properly.

Captcha options

Option Default Value Description
numeric 0 Defines if captcha contains numeric or other symbols see more info in the API docs
min_len 0 minimal answer length
max_len 0 maximum answer length
phrase 0 defines if the answer contains multiple words or not
case_sensitive 0 defines if the answer is case sensitive
calc 0 defines captcha requires calculation
lang - defines the captcha language, see the list of supported languages
hint_img - an image with hint shown to workers with the captcha
hint_text - hint or task text shown to workers with the captcha

Below you can find basic examples for every captcha type, check out the code below.

Basic example

Example below shows a basic solver call example with error handling.

captcha := api2captcha.Normal{
   File: "/path/to/normal.jpg",
}

code, err := client.Solve(captcha.ToRequest())
if err != nil {
	if err == api2captcha.ErrTimeout {
		log.Fatal("Timeout");
	} else if err == api2captcha.ErrApi {
		log.Fatal("API error");
	} else if err == api2captcha.ErrNetwork {
		log.Fatal("Network error");
	} else {
		log.Fatal(err);
	}
}
fmt.Println("code "+code)

Normal Captcha

API method description.

To bypass a normal captcha (distorted text on image) use the following method. This method also can be used to recognize any text on the image.

captcha:= api2captcha.Normal{
   File: "/path/to/normal.jpg",
   Numeric: 4,
   MinLen: 4,
   MaxLen: 20,
   Phrase: true,
   CaseSensitive: true,
   Lang: "en",
   HintImgFile: "/path/to/hint.jpg",
   HintText: "Type red symbols",
}

Text Captcha

API method description.

This method can be used to bypass a captcha that requires to answer a question provided in clear text.

captcha:= api2captcha.Text{
   Text: "If tomorrow is Saturday, what day is today?",
   Lang: "en",
}

reCAPTCHA v2

API method description.

Use this method to solve reCAPTCHA V2 and obtain a token to bypass the protection.

captcha := api2captcha.ReCaptcha{
   SiteKey: "6Le-wvkSVVABCPBMRTvw0Q4Muexq1bi0DJwx_mJ-",
   Url: "https://mysite.com/page/with/recaptcha",
   Invisible: true,
   Action: "verify",
}
req := captcha.ToRequest()
req.SetProxy("HTTPS", "login:password@IP_address:PORT")
code, err := client.Solve(req)

reCAPTCHA v3

API method description.

This method provides reCAPTCHA V3 solver and returns a token.

captcha := api2captcha.ReCaptcha{
   SiteKey: "6Le-wvkSVVABCPBMRTvw0Q4Muexq1bi0DJwx_mJ-",
   Url: "https://mysite.com/page/with/recaptcha",
   Version: "v3",
   Action: "verify",
   Score: 0.3,
}
req := captcha.ToRequest()
req.SetProxy("HTTPS", "login:password@IP_address:PORT")
code, err := client.Solve(req)

reCAPTCHA Enterprise

API method description.

reCAPTCHA Enterprise can be used as reCAPTCHA V2 and reCAPTCHA V3. Below is a usage example for both versions.

// reCAPTCHA V2
captcha:=  api2captcha.ReCaptcha({
   SiteKey: "6Le-wvkSVVABCPBMRTvw0Q4Muexq1bi0DJwx_mJ-",
   Url: "https://mysite.com/page/with/recaptcha",
   Invisible: true,
   Action: "verify",
   Enterprise: true,
})

// reCAPTCHA V3
captcha := api2captcha.ReCaptcha{
   SiteKey: "6Le-wvkSVVABCPBMRTvw0Q4Muexq1bi0DJwx_mJ-",
   Url: "https://mysite.com/page/with/recaptcha",
   Version: "v3",
   Action: "verify",
   Score: 0.3,
   Enterprise: true,
}

req := captcha.ToRequest()
req.SetProxy("HTTPS", "login:password@IP_address:PORT")
code, err := client.Solve(req)

FunCaptcha

API method description.

FunCaptcha (Arkoselabs) solving method. Returns a token.

captcha := api2captcha.FunCaptcha{
   SiteKey: "69A21A01-CC7B-B9C6-0F9A-E7FA06677FFC",
   Url: "https://mysite.com/page/with/funcaptcha",
   Surl: "https://client-api.arkoselabs.com",
   UserAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36",
   Data: map[string]string{"anyKey":"anyValue"},
}
req := captcha.ToRequest()
req.SetProxy("HTTPS", "login:password@IP_address:PORT")
code, err := client.Solve(req)

GeeTest

API method description.

Method to solve GeeTest puzzle captcha. Returns a set of tokens as JSON.

captcha := api2captcha.GeeTest{
   GT: "f2ae6cadcf7886856696502e1d55e00c",
   ApiServer: "api-na.geetest.com",
   Challenge: "12345678abc90123d45678ef90123a456b",
   Url: "https://mysite.com/captcha.html",
}
req := captcha.ToRequest()
req.SetProxy("HTTPS", "login:password@IP_address:PORT")
code, err := client.Solve(req)

GeeTest V4

API method description.

Use this method to solve GeeTest v4. Returns the response in JSON.

captcha:= api2captcha.GeeTestV4{
    CaptchaId: "e392e1d7fd421dc63325744d5a2b9c73",
    Url: "https://www.site.com/page/",
}

KeyCaptcha

API method description.

Token-based method to solve KeyCaptcha.

captcha:= api2captcha.KeyCaptcha{
   UserId: 10,
   SessionId: "493e52c37c10c2bcdf4a00cbc9ccd1e8",
   WebServerSign: "9006dc725760858e4c0715b835472f22",
   WebServerSign2: "9006dc725760858e4c0715b835472f22",
   Url: "https://www.keycaptcha.ru/demo-magnetic/",
}
req := captchaToRequest()
req.SetProxy("HTTPS", "login:password@IP_address:PORT")
code, err := client.Solve(req)

Capy

API method description.

Token-based method to bypass Capy puzzle captcha.

captcha:= api2captcha.Capy{
   SiteKey: "PUZZLE_Abc1dEFghIJKLM2no34P56q7rStu8v",
   Url: "https://www.mysite.com/captcha/",
}
req := captchaToRequest()
req.SetProxy("HTTPS", "login:password@IP_address:PORT")
code, err := client.Solve(req)

Grid

API method description.

Grid method is originally called Old reCAPTCHA V2 method. The method can be used to bypass any type of captcha where you can apply a grid on image and need to click specific grid boxes. Returns numbers of boxes.

captcha:= api2captcha.Grid{
    File: "path/to/captcha.jpg",
    Rows: 3,
    Cols: 3,
    PreviousId: 0,
    CanSkip: false,
    Lang: "en",
    HintImageFile: "path/to/hint.jpg",
    HintText: "Select all images with an Orange",
}

Canvas

API method description.

Canvas method can be used when you need to draw a line around an object on image. Returns a set of points' coordinates to draw a polygon.

captcha:= api2captcha.Canvas{
    File: "path/to/captcha.jpg",
    PreviousId: 0,
    CanSkip: false,
    Lang: "en",
    HintImageFile: "path/to/hint.jpg",
    HintText: "Draw around apple",
}

ClickCaptcha

API method description.

ClickCaptcha method returns coordinates of points on captcha image. Can be used if you need to click on particular points on the image.

captcha:= api2captcha.Coordinates{
    File: "path/to/captcha.jpg",
    Lang: "en",
    HintImageFile: "path/to/hint.jpg",
    HintText: "Connect the dots",
}

Rotate

API method description.

This method can be used to solve a captcha that asks to rotate an object. Mostly used to bypass FunCaptcha. Returns the rotation angle.

captcha:= api2captcha.Rotate{
    File: "path/to/captcha.jpg",
    Angle: 15,
    Lang: "en",
    HintImageFile: "path/to/hint.jpg",
    HintText: "Put the images in the correct way",
}

Amazon WAF

API method description.

Use this method to solve Amazon WAF Captcha also known as AWS WAF Captcha is a part of Intelligent threat mitigation for Amazon AWS. Returns JSON with the token.

captcha:= api2captcha.AmazonWAF {
   Iv: "CgAHbCe2GgAAAAAj",
   SiteKey: "0x1AAAAAAAAkg0s2VIOD34y5",
   Url: "https://non-existent-example.execute-api.us-east-1.amazonaws.com/latest",
   Context: "9BUgmlm48F92WUoqv97a49ZuEJJ50TCk9MVr3C7WMtQ0X6flVbufM4n8mjFLmbLVAPgaQ1Jydeaja94iAS49ljb",
   ChallengeScript: "https://41bcdd4fb3cb.610cd090.us-east-1.token.awswaf.com/41bcdd4fb3cb/0d21de737ccb/cd77baa6c832/challenge.js"
   CaptchaScript: "https://41bcdd4fb3cb.610cd090.us-east-1.captcha.awswaf.com/41bcdd4fb3cb/0d21de737ccb/cd77baa6c832/captcha.js"
}

Cloudflare Turnstile

API method description.

Use this method to solve Cloudflare Turnstile. Returns JSON with the token.

captcha:= api2captcha.CloudflareTurnstile{
   SiteKey: "0x1AAAAAAAAkg0s2VIOD34y5",
   Url: "http://mysite.com/",
}

Lemin Cropped Captcha

API method description.

Use this method to solve Lemin Captcha challenge. Returns JSON with answer containing the following values: answer, challenge_id.

captcha:= Lemin{
   CaptchaId: "CROPPED_3dfdd5c_d1872b526b794d83ba3b365eb15a200b",
   Url:   "https://www.site.com/page/",
   DivId:     "lemin-cropped-captcha",
   ApiServer: "api.leminnow.com",
}

CyberSiARA

API method description.

Use this method to solve CyberSiARA and obtain a token to bypass the protection.

captcha:= api2captcha.CyberSiARA{
   MasterUrlId: "12333-3123123",
   Url: "https://test.com",
   UserAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36",
}

DataDome

API method description.

Use this method to solve DataDome and obtain a token to bypass the protection.

Important

To solve the DataDome captcha, you must use a proxy. It is recommended to use residential proxies.

captcha:= api2captcha.DataDome{
   Url: "https://test.com",
   CaptchaUrl: "https://test.com/captcha/",
   Proxytype: "http",
   Proxy: "proxyuser:[email protected]:3128",
   UserAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36",
}

MTCaptcha

API method description.

Use this method to solve MTCaptcha and obtain a token to bypass the protection.

captcha:= api2captcha.MTCaptcha{
   Url: "https://service.mtcaptcha.com/mtcv1/demo/index.html",
   SiteKey: "MTPublic-DemoKey9M",
}

Yandex

Use this method to solve Yandex and obtain a token to bypass the protection.

captcha:= api2captcha.Yandex{
   Url: "https://example.com",
   SiteKey: "Y5Lh0tiycconMJGsFd3EbbuNKSp1yaZESUOIHfeV",
}

Tencent

API method description.

Use this method to solve Tencent and obtain a token to bypass the protection.

tencentCaptcha := api2captcha.Tencent{
   AppId: "2092215077",
   Url:   "http://lcec.lclog.cn/cargo/NewCargotracking?blno=BANR01XMHB0004&selectstate=BLNO",
}

atbCAPTCHA

API method description.

Use this method to solve atbCAPTCHA and obtain a token to bypass the protection.

atbCaptcha := api2captcha.AtbCAPTCHA{
   AppId:     "af23e041b22d000a11e22a230fa8991c",
   Url:       "https://www.playzone.vip/",
   ApiServer: "https://cap.aisecurius.com",
}

Cutcaptcha

API method description.

Use this method to solve Cutcaptcha and obtain a token to bypass the protection.

captcha:= api2captcha.Cutcaptcha{
   MiseryKey: "a1488b66da00bf332a1488993a5443c79047e752",
   DataApiKey: "SAb83IIB",
   Url: "https://example.cc/foo/bar.html",
}

Friendly Captcha

API method description.

Use this method to solve Friendly Captcha and obtain a token to bypass the protection.

captcha:= api2captcha.Friendly{
   Url: "https://example.com",
   SiteKey: "2FZFEVS1FZCGQ9",
}

Audio Captcha

API method description.

Use this method to solve Audio captcha and obtain a token to bypass the protection.

audio := api2captcha.Audio{
   Base64: fileBase64Str,
   Lang:   "en",
}

Other methods

Send / GetResult

These methods can be used for manual captcha submission and answer polling.

id, err := client.Send(captchaToRequest())
if err != nil {
   log.Fatal(err);
}

time.Sleep(10 * time.Second)

code, err := client.GetResult(id)
if err != nil {
   log.Fatal(err);
}

if code == nil {
   log.Fatal("Not ready")
}

fmt.Println("code "+*code)

balance

API method description.

Use this method to get your account's balance

balance, err := client.GetBalance()
if err != nil {
   log.Fatal(err);
}

report

API method description.

Use this method to report good or bad captcha answer.

err := client.Report(id, true) // solved correctly
err := client.Report(id, false) // solved incorrectly

Proxies

You can pass your proxy as an additional argument for methods: recaptcha, funcaptcha, geetest, geetest v4, keycaptcha, capy puzzle, lemin, turnstile, amazon waf, CyberSiARA, DataDome, MTCaptcha and etc. The proxy will be forwarded to the API to solve the captcha.

We have our own proxies that we can offer you. Buy residential proxies for avoid restrictions and blocks. Quick start.

Examples

Examples of solving all supported captcha types are located in the examples directory.

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License

The code in this repository is licensed under the MIT License. See the LICENSE file for more details.

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