TwoCaptcha

TwoCaptcha is a Ruby API for 2Captcha - 2Captcha.com

Installation

Add this line to your application's Gemfile:

gem 'two_captcha'

And then execute:

$ bundle

Or install it yourself as:

$ gem install two_captcha

Usage

1. Create a client

client = TwoCaptcha.new('my_key')

2. Solve a CAPTCHA

There are two types of methods available: decode and decode!:

• decode does not raise exceptions.
• decode! may raise a TwoCaptcha::Error if something goes wrong.

If the solution is not available, an empty solution object will be returned.

captcha = client.decode_image!(url: 'http://bit.ly/1xXZcKo')
captcha.text        # CAPTCHA solution
captcha.id          # CAPTCHA numeric id

Image CAPTCHA

You can specify file, path, raw, raw64 and url when decoding an image.

client.decode_image!(file: File.open('path/to/my/captcha/file', 'rb'))
client.decode_image!(path: 'path/to/my/captcha/file')
client.decode_image!(raw: File.open('path/to/my/captcha/file', 'rb').read)
client.decode_image!(raw64: Base64.encode64(File.open('path/to/my/captcha/file', 'rb').read))
client.decode_image!(url: 'http://bit.ly/1xXZcKo')

You may also specify any POST parameters specified at https://2captcha.com/setting.

reCAPTCHA v2

captcha = client.decode_recaptcha_v2!(
  googlekey: 'xyz',
  pageurl:   'http://example.com/example=1',
)

# The response will be a text (token), which you can access with the `text` method.

captcha.text
"03AOPBWq_RPO2vLzyk0h8gH0cA2X4v3tpYCPZR6Y4yxKy1s3Eo7CHZRQntxrd..."

Parameters:

• googlekey: the Google key for the reCAPTCHA.
• pageurl: the URL of the page with the reCAPTCHA challenge.

reCAPTCHA v3

captcha = client.decode_recaptcha_v3!(
  googlekey: 'xyz',
  pageurl:   'http://example.com/example=1',
  action:    'verify',
  min_score: 0.3, # OPTIONAL
)

# The response will be a text (token), which you can access with the `text` method.

captcha.text
"03AOPBWq_RPO2vLzyk0h8gH0cA2X4v3tpYCPZR6Y4yxKy1s3Eo7CHZRQntxrd..."

Parameters:

• googlekey: the Google key for the reCAPTCHA.
• pageurl: the URL of the page with the reCAPTCHA challenge.
• action: the action name used by the CAPTCHA.
• min_score: optional parameter. The minimal score needed for the CAPTCHA resolution. Defaults to 0.3.

About the action parameter: in order to find out what this is, you need to inspect the JavaScript code of the website looking for a call to the grecaptcha.execute function.

// Example
grecaptcha.execute('6Lc2fhwTAAAAAGatXTzFYfvlQMI2T7B6ji8UVV_f', { action: "examples/v3scores" })

About the min_score parameter: it's strongly recommended to use a minimum score of 0.3 as higher scores are rare.

Amazon WAF

captcha = client.decode_amazon_waf!(
  sitekey:          'xyz',
  pageurl:          'http://example.com/example=1',
  iv:               'A1A1A1A1A1A1A1A1',
  context:          'ABcd...',
  challenge_script: 'http://example.com/challenge.js',
)

puts captcha.text
{"captcha_voucher":"eyJ0...","existing_token":"f2ae6..."}

Parameters:

• website_key: the site key for the hCatpcha.
• website_url: the URL of the page with the challenge.

3. Using proxy or other custom options

You are allowed to use custom options like proxy, proxytype or userAgent whenever the 2Captcha API supports it. Example:

options = {
  sitekey:   'xyz',
  pageurl:   'http://example.com/example=1',
  proxy:     'login:password@123.123.123.123:3128',
  userAgent: 'user agent',
}

4. Retrieve a previously solved CAPTCHA

captcha = client.captcha('130920620') # with 130920620 being the CAPTCHA id

5. Report an incorrectly solved CAPTCHA for a refund

client.report!('130920620', 'reportbad') # with 130920620 being the CAPTCHA id
# returns `true` if successfully reported

client.report!('256892751', 'reportgood') # with 256892751 being the CAPTCHA id
# returns `true` if successfully reported

6. Get your account balance

client.balance
# returns a Float balance in USD.

7. Get usage statistics for a specific date

client.stats(Date.new(2022, 10, 7))
# returns an XML string with your usage statistics.

Notes

Thread-safety

The API is thread-safe, which means it is perfectly fine to share a client instance between multiple threads.

Ruby dependencies

TwoCaptcha don't require specific dependencies. That saves you memory and avoid conflicts with other gems.

Input image format

Any format you use in the decode_image! method (url, file, path, raw or raw64) will always be converted to a raw64, which is a base64-encoded binary string. So, if you already have this format on your end, there is no need for convertions before calling the API.

Our recomendation is to never convert your image format, unless needed. Let the gem convert internally. It may save you resources (CPU, memory and IO).

Versioning

TwoCaptcha gem uses Semantic Versioning.

Contributing

1. Fork it ( https://github.com/infosimples/two_captcha/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Run/add tests (RSpec)
4. Commit your changes (git commit -am 'Add some feature')
5. Push to the branch (git push origin my-new-feature)
6. Create a new Pull Request
7. Yay. Thanks for contributing :)

All contributors: https://github.com/infosimples/two_captcha/graphs/contributors

License

MIT License. Copyright (C) 2011-2022 Infosimples. https://infosimples.com/