AZcaptcha API Document

AZcaptcha is a automatic image and CAPTCHA recognition service. AZcaptcha's main purpose is solving your CAPTCHAs in a quick and accurate way by AI employees, but the service is not limited only to CAPTCHA solving. You can convert to text any image that a AI can recognize.

Introduction

We provide an API that allows you to automate the process and integrate your software with our service.

There are few simple steps to solve your captcha or recognize the image:

  1. Send your image or captcha to our server.
  2. Get the ID of your task.
  3. Start a cycle that checks if your task is completed.
  4. Get the result.

Rates

Our rates depends on type of captcha that you want to solve and the method used. Rate for normal captcha also depends on current service load.

Type of captcha/method Rate per 1000 Description
Normal Captcha $0.4 The rate is flexible and depends on current load of the service. You can see current rate and limit max rate in your account settings.
ReCaptcha V2 $1.8 The rate applies to Google's ReCaptcha V2 solved via token.

Solving Captchas

The process of solving captchas with AZcaptcha is really easy and it's mostly the same for all types of captchas:

  1. Get your API key from your account settings page. Each user is given a unique authentication token, we call it API key. It's a 32-characters string that looks like:
    2abc234de56fab7c89012d34e56f6789
    This key will be used for all your requests to our server.
  2. Submit a HTTP POST request to our API URL: http://azcaptcha.com/in.php with parameters corresponding to the type of your captcha.
    Server will return captcha ID or an error code if something went wrong.
  3. Make a timeout: 20 seconds for ReCaptcha, 5 seconds for other types of captchas.
  4. Submit a HTTP GET request to our API URL: http://azcaptcha.com/res.php to get the result.
    If captha is already solved server will return the answer in format corresponding to the type of your captcha.
    By default answers are returned as plain text like: OK|Your answer. But answer can also be returned as JSON {"status":1,"request":"TEXT"} if json parameter is used.
    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.

Normal Captcha

Normal Captcha is an image that contains distored but human-readable text. To solve the captcha user have to type the text from the image.

To solve the captcha with our service you have to submit the image with HTTP POST request to our API URL: http://azcaptcha.com/in.php
Server accepts images in multipart or base64 format.

Multipart sample form

<form method="post" action="http://azcaptcha.com/in.php" enctype="multipart/form-data">
<input type="hidden" name="method" value="post">
Your key:
<input type="text" name="key" value="YOUR_APIKEY">
The CAPTCHA file:
<input type="file" name="file">
<input type="submit" value="Upload and get the ID">
</form>

YOUR_APIKEY is Your API key.

Base64 sample form

<form method="post" action="http://azcaptcha.com/in.php">
<input type="hidden" name="method" value="base64">
Your key:
<input type="text" name="key" value="YOUR_APIKEY">
The CAPTCHA file body in base64 format:
<textarea name="body">BASE64_FILE</textarea>
<input type="submit" value="Upload and get the ID">
</form>

YOUR_APIKEY is your API key.

BASE64_FILE is base64-encoded image body.

You can provide additional parameters with your request to define what kind of captcha you're sending and to help workers to solve your captcha correctly. You can find the full list of parameters in the table below.

If everything is fine server will return the ID of your captcha as plain text, like: OK|2122988149 or as JSON {"status":1,"request":"2122988149"} if json parameter was used.

If something went wrong server will return an error. See Error Handling chapter for the list of errors.

Make a 5 seconds timeout and submit a HTTP GET request to our API URL: http://azcaptcha.com/res.php providing the captcha ID. The list of parameters is in the table below.

If everything is fine and your captcha is solved server will return the answer as plain text, like: OK|TEXT or as JSON {"status":1,"request":"TEXT"} if json parameter was used.

Otherwise server will return CAPCHA_NOT_READY that means that your captcha is not solved yet. Just repeat your request in 5 seconds.

If something went wrong server will return an error. See Error Handling chapter for the list of errors.

List of POST request parameters for http://azcaptcha.com/in.php

POST parameter Type Required Description
key String Yes your API key
method String Yes post - defines that you're sending an image with multipart form
base64 - defines that you're sending a base64 encoded image
phrase Integer
Default: 0
No 0 - captcha contains one word
1 - captcha contains two or more words
regsense Integer
Default: 0
No 0 - captcha in not case sensitive
1 - captcha is case sensitive
numeric Integer
Default: 0
No 0 - not specified
1 - captcha contains only numbers
2 - captcha contains only letters
3 - captcha contains only numbers OR only letters
4 - captcha contains both numbers AND letters
calc Integer
Default: 0
No 0 - not specified
1 - captcha requires calculation (e.g. type the result 4 + 8 = )
min_len Integer
Default: 0
No 0 - not specified
1..20 - minimal number of symbols in captcha
max_len Integer
Default: 0
No 0 - not specified
1..20 - maximal number of symbols in captcha
language Integer
Default: 0
No 0 - not specified
1 - Cyrillic captcha
2 - Latin captcha
lang String No Language code. See the list of supported languages.
textinstructions String
Max 140 characters
Endcoding: UTF-8
No Text will be shown to worker to help him to solve the captcha correctly.
For example: type red symbols only.
imginstructions Image
Max 100x100px, 25 kB
No Image will be shown to worker to help him to solve the captcha correctly.
Server accepts images from multipart form or base64-encoded.
header_acao Integer
Default: 0
No 0 - disabled
1 - enabled.
If enabled in.php will include Access-Control-Allow-Origin:* header in the response.
Used for cross-domain AJAX requests in web applications.
pingback String No URL for pingback (callback) response that will be sent when captcha is solved.
URL should be registered on the server. More info here.
json Integer
Default: 0
No 0 - server will send the response as plain text
1 - tells the server to send the response as JSON

List of GET request parameters for http://azcaptcha.com/res.php

GET parameter Type Required Description
key String Yes your API key
action String Yes get - get the asnwer for your captcha
id Integer Yes ID of captcha returned by in.php.
json Integer
Default: 0
No 0 - server will send the response as plain text
1 - tells the server to send the response as JSON
header_acao Integer
Default: 0
No 0 - disabled
1 - enabled.
If enabled res.php will include Access-Control-Allow-Origin:* header in the response.
Used for cross-domain AJAX requests in web applications.

Request URL example:

http://azcaptcha.com/res.php?key=2abc234de56fab7c89012d34e56f6789&action=get&id=2122988149

ReCaptcha V2

ReCaptcha V2 also known as I'm not a robot reCaptcha is a very popular type of captcha that looks like this:

Solving ReCaptcha V2 with our new method is pretty simple:

  1. Look at the element's code at the page where you found ReCaptcha.

  2. Find a link that begins with www.google.com/recaptcha/api2/anchor or find data-sitekey parameter.

  3. Copy the value of k parameter of the link (or value of data-sitekey parameter).

  4. Submit a HTTP GET or POST request to our API URL: http://azcaptcha.com/in.php with method set to userrecaptcha and provide the value found on previous step as value for googlekey and full page URL as value for pageurl. Sending proxies is not obligatory ar the moment but it's recommended.
    You can find the full list of parameters in the table below.

    Request URL example:

    http://azcaptcha.com/in.php?key=2abc234de56fab7c89012d34e56f6789&method=userrecaptcha&googlekey=6Le-wvkSVVABCPBMRTvw0Q4Muexq1bi0DJwx_mJ-&pageurl=http://mysite.com/page/with/recaptcha?appear=1&here=now
  5. If everything is fine server will return the ID of your captcha as plain text, like: OK|2122988149 or as JSON {"status":1,"request":"2122988149"} if json parameter was used.
    Otherwise server will return an error code.

  6. Make a 15-20 seconds timeout then submit a HTTP GET request to our API URL: http://azcaptcha.com/res.php to get the result.
    The full list of parameters is in the table below.

    If captha is already solved server will respond in plain text or JSON and return the answer token that looks like:

    03AHJ_Vuve5Asa4koK3KSMyUkCq0vUFCR5Im4CwB7PzO3dCxIo11i53epEraq-uBO5mVm2XRikL8iKOWr0aG50sCuej9bXx5qcviUGSm4iK4NC_Q88flavWhaTXSh0VxoihBwBjXxwXuJZ-WGN5Sy4dtUl2wbpMqAj8Zwup1vyCaQJWFvRjYGWJ_TQBKTXNB5CCOgncqLetmJ6B6Cos7qoQyaB8ZzBOTGf5KSP6e-K9niYs772f53Oof6aJeSUDNjiKG9gN3FTrdwKwdnAwEYX-F37sI_vLB1Zs8NQo0PObHYy0b0sf7WSLkzzcIgW9GR0FwcCCm1P8lB-50GQHPEBJUHNnhJyDzwRoRAkVzrf7UkV8wKCdTwrrWqiYDgbrzURfHc2ESsp020MicJTasSiXmNRgryt-gf50q5BMkiRH7osm4DoUgsjc_XyQiEmQmxl5sqZP7aKsaE-EM00x59XsPzD3m3YI6SRCFRUevSyumBd7KmXE8VuzIO9lgnnbka4-eZynZa6vbB9cO3QjLH0xSG3-egcplD1uLGh79wC34RF49Ui3eHwua4S9XHpH6YBe7gXzz6_mv-o-fxrOuphwfrtwvvi2FGfpTexWvxhqWICMFTTjFBCEGEgj7_IFWEKirXW2RTZCVF0Gid7EtIsoEeZkPbrcUISGmgtiJkJ_KojuKwImF0G0CsTlxYTOU2sPsd5o1JDt65wGniQR2IZufnPbbK76Yh_KI2DY4cUxMfcb2fAXcFMc9dcpHg6f9wBXhUtFYTu6pi5LhhGuhpkiGcv6vWYNxMrpWJW_pV7q8mPilwkAP-zw5MJxkgijl2wDMpM-UUQ_k37FVtf-ndbQAIPG7S469doZMmb5IZYgvcB4ojqCW3Vz6Q

    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.

  7. Locate the element with id g-recaptcha-response and make it visible deleting display:none parameter.

    Please note: sometimes content on the page is generated dynamically and you will not see this element in html source.
    In such cases you have to explore javascript code that generates the content. "Inspect" option in Google Chrome can help in that.

    As an alternative you can just use javascript to set the value of g-recaptcha-response field:

    document.getElementById("g-recaptcha-response").innerHTML="TOKEN_FROM_AZCAPTCHA";

  8. An input field will appear on the page. And you just have to paste the answer token to that field and submit the form.

  9. Congratulations, you've passed the recaptha

ReCaptcha Callback

Sometimes there's no submit button and a callback function is used isntead. The function is executed when reCaptcha is solved.

Callback function is usually defined in data-callback parameter of reCaptcha, for example:

data-callback="myCallbackFunction"

Or sometimes it's defined as callback parameter of grecaptcha.render function, for example:

grecaptcha.render('example', {
  'sitekey' : 'someSitekey',
  'callback' : myCallbackFunction,
  'theme' : 'dark'
});

Also there's another way to find the callback function - open javascript console of your browser and explore ReCaptcha configuration object:

___grecaptcha_cfg.clients[0].aa.l.callback

Note that aa.l may change and there can be multiple clients so you have to check clients[1], clients[2] too.

Finally all you have to do is to call that function:

myCallbackFunction();

Or even this way:

___grecaptcha_cfg.clients[0].aa.l.callback();

Sometimes it is required to provide an argument and in most cases you should put the token there. For example:

myCallbackFunction('TOKEN');

Invisible ReCaptcha V2

ReCaptcha V2 also has an invisible version.
You may check how it looks like here: https://www.google.com/recaptcha/api2/demo?invisible=true
Recently we noticed some changes in invisible ReCaptcha algorithms on few websites and added new parameter invisible=1 that should be used for invisible ReCaptcha.
Read more about invisible ReCaptcha below.

Invisible ReCaptcha is located on a DIV layer positioned -10 000 px from top that makes it invisible for user.

ReCaptcha is activated on page load or on user's actions like click somewhere or submit a form - that depends on the website. If user's cookies are good enough then he will just pass it automatically and no additional actions will be required. Otherwise user will see standard ReCaptcha form with a challenge.

In most cases when challenge is completed a callback function is executed. You can read more about callback here.

If you are still not sure — there are few ways to determine that ReCaptcha is in invisible mode:

  • You don't see "I'm not a robot" checkbox on the page but getting recaptcha challenge when making some actions there
  • ReCaptcha's iframe link contains parameter size=invisible
  • ReCaptcha's configuration object contains parameter size that is set to invisible, for example ___grecaptcha_cfg.clients[0].aa.l.size is equal to invisible

How to bypass invisible ReCaptcha in browser?


Method 1: using javascript:

  1. Change the value of g-recaptcha-response element to the token you received from our server:
  2. document.getElementById("g-recaptcha-response").innerHTML="TOKEN_FROM_AZCAPTCHA";
    
  3. Execute the action that needs to be performed on the page after solving reCaptcha.

  4. Usually there's a form that should be submitted and you need to identify the form by id or name or any other attribute and then submit the form. Here are few examples:

    document.getElementById("recaptcha-demo-form").submit(); //by id "recaptcha-demo-form"
    document.getElementsByName("myFormName")[0].submit(); //by element name "myFormName"
    document.getElementsByClassName("example").submit(); //by class name "example"
    

    Or sometimes there's a callback function executed when reCaptcha is solved.

    Callback function is usually defined in data-callback parameter of reCaptcha, for example:

    data-callback="myCallbackFunction"

    Or sometimes it's defined as callback parameter of grecaptcha.render function, for example:

    grecaptcha.render('example', {
      'sitekey' : 'someSitekey',
      'callback' : myCallbackFunction,
      'theme' : 'dark'
    });

    And all you have to do is to call that function:

    myCallbackFunction();
  5. Voila! You've done that with just 2 strings of code.

Method 2: changing HTML:

  1. Cut the div containing ReCaptcha from page body.
  2. <div style="visibility: hidden; position: absolute; width:100%; top: -10000px; left: 0px; right: 0px; transition: visibility 0s linear 0.3s, opacity 0.3s linear; opacity: 0;">
    <div style="width: 100%; height: 100%; position: fixed; top: 0px; left: 0px; z-index: 2000000000; background-color: #fff; opacity: 0.5;  filter: alpha(opacity=50)">
    </div>
    <div style="margin: 0 auto; top: 0px; left: 0px; right: 0px; position: absolute; border: 1px solid #ccc; z-index: 2000000000; background-color: #fff; overflow: hidden;">
    <iframe src="https://www.google.com/recaptcha/api2/bframe?hl=en&amp;v=r20170213115309&amp;k=6LfP0CITAAAAAHq9FOgCo7v_fb0-pmmH9VW3ziFs#zglq3yifgkmj" title="recaptcha challenge" style="width: 100%; height: 100%;" scrolling="no" name="zglq3yifgkmj" frameborder="0"></iframe>
    </div>
    </div>
    
  3. Cut the whole block:
  4. <div class=""><!-- BEGIN: ReCAPTCHA implementation example. -->
    <div id="recaptcha-demo" class="g-recaptcha" data-sitekey="6LfP0CITAAAAAHq9FOgCo7v_fb0-pmmH9VW3ziFs" data-callback="onSuccess" data-bind="recaptcha-demo-submit"><div class="grecaptcha-badge" style="width: 256px; height: 60px; transition: right 0.3s ease 0s; position: fixed; bottom: 14px; right: -186px; box-shadow: 0px 0px 5px gray;"><div class="grecaptcha-logo"><iframe src="https://www.google.com/recaptcha/api2/anchor?k=6LfP0CITAAAAAHq9FOgCo7v_fb0-pmmH9VW3ziFs&amp;co=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbTo0NDM.&amp;hl=en&amp;v=r20170213115309&amp;size=invisible&amp;cb=uror1hlow5a" title="recaptcha widget" scrolling="no" name="undefined" width="256" height="60" frameborder="0"></iframe></div><div class="grecaptcha-error"></div><textarea id="g-recaptcha-response" name="g-recaptcha-response" class="g-recaptcha-response" style="width: 250px; height: 40px; border: 1px solid #c1c1c1; margin: 10px 25px; padding: 0px; resize: none;  display: none; "></textarea></div></div>
                                                    
    <script>
        var onSuccess = function (response) {
            var errorDivs = document.getElementsByClassName("recaptcha-error");
            if (errorDivs.length) {
                errorDivs[0].className = "";
            }
            var errorMsgs = document.getElementsByClassName("recaptcha-error-message");
            if (errorMsgs.length) {
                errorMsgs[0].parentNode.removeChild(errorMsgs[0]);
            }
            document.getElementById("recaptcha-demo-form").submit();
        };
                                                                                                                                                                    </script><!-- Optional noscript fallback. --><!-- END: ReCAPTCHA implementation example. --></div>
                                    
    
  5. Put the following code instead of the block you've just cut:
  6. <input type="submit">
    <textarea name="g-recaptcha-response">%g-recaptcha-response%</textarea>
    
    Where %g-recaptcha-response% - is an answer token you’ve got from our service.
  7. You will see “Submit query” button.
    Press the button to submit the form with g-recaptcha-response and all other form data to the website.

List of GET/POST request parameters for http://azcaptcha.com/in.php

Parameter Type Required Description
key String Yes your API key
method String Yes userrecaptcha - defines that you're sending a ReCaptcha V2 with new method
googlekey String Yes Value of k or data-sitekey parameter you found on page
pageurl String Yes Full URL of the page where you see the ReCaptcha
invisible Integer
Default: 0
No 1 - means that ReCaptcha is invisible. 0 - normal ReCaptcha.
header_acao Integer
Default: 0
No 0 - disabled
1 - enabled.
If enabled in.php will include Access-Control-Allow-Origin:* header in the response.
Used for cross-domain AJAX requests in web applications. Also supported by res.php.
pingback String No URL for pingback (callback) response that will be sent when captcha is solved.
URL should be registered on the server. More info here.
json Integer
Default: 0
No 0 - server will send the response as plain text
1 - tells the server to send the response as JSON
proxy String No Format: login:password@123.123.123.123:3128
You can find more info about proxies here.
proxytype String No Type of your proxy: HTTP, HTTPS, SOCKS4, SOCKS5.
cookie String No Additional cookies which we must use during interaction with target page or Google.
Format: cookiename1=cookievalue1; cookiename2=cookievalue2
useragent String No 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".

List of GET request parameters for http://azcaptcha.com/res.php

GET parameter Type Required Description
key String Yes your API key
action String Yes get - get the asnwer for your captcha
id Integer Yes ID of captcha returned by in.php.
json Integer
Default: 0
No 0 - server will send the response as plain text
1 - tells the server to send the response as JSON

Request URL example:

http://azcaptcha.com/res.php?key=2abc234de56fab7c89012d34e56f6789&action=get&id=2122988149

ReCaptcha V1

ReCaptcha V1 is old and mostly replaced with ReCaptcha V2, but you still can find it on some websites.

It can have diffenent themes but usually looks like this:

To solve the ReCaptcha V1 you have to:

  1. Download the page from the noscript element src link and find the element with id recaptcha_challenge_field in the source code of the page.

  2. Get the image from link: www.google.com/recaptcha/api/image?c=recaptcha_challenge_field.

  3. Submit the image with HTTP POST request to our server in the same way as for Normal Captcha.

The remaining part of the process is absolutely the same as for Normal Captchas so please refer to the description of Solving Normal Captcha process.

Error Handling

It's very important to use proper error handling in your code to avoid suspension of your account and service interruption.

Normally if something is wrong with your request server will return an error.
Below you can find tables with lists of errors with descriptions:

Errors can be returned as plain text or as JSON if you provided json=1 parameter.

In very rare cases server can return HTML page with error text like 500 or 502 - please keep it in mind and handle such cases correctly.
If you received anything that doesn't looks like the answer or error code - make a 5 seconds timeout and then retry your request.

List of in.php errors

Error code Description Action
ERROR_WRONG_USER_KEY You've provided key parameter value in incorrect format, it should contain 32 symbols. Stop sending requests. Check your API key.
ERROR_KEY_DOES_NOT_EXIST The key you've provided does not exists. Stop sending requests. Check your API key.
ERROR_ZERO_BALANCE You don't have funds on your account. Stop sending requests. Deposit your account to continue solving captchas.
ERROR_PAGEURL pageurl parameter is missing in your request. Stop sending requests and change your code to provide valid pageurl parameter.
More info.
ERROR_NO_SLOT_AVAILABLE You can receive this error in two cases:
1. If you solve ReCaptcha: the queue of your captchas that are not distributed to workers is too long. Queue limit changes dynamically and depends on total amount of captchas awaiting solution and usually it’s between 50 and 100 captchas.
2. If you solve Normal Captcha: your maximum rate for normal captchas is lower than current rate on the server.
You can change your maximum rate in your account's settings.
If you received this error, don't try to submit your request again immediately. Make 2-3 seconds timeout and then retry to submit your request.
ERROR_ZERO_CAPTCHA_FILESIZE Image size is less than 100 bytes. Check the image file.
ERROR_TOO_BIG_CAPTCHA_FILESIZE Image size is more than 100 kB. Check the image file.
ERROR_WRONG_FILE_EXTENSION Image file has unsupported extension. Accepted extensions: jpg, jpeg, gif, png. Check the image file.
ERROR_IMAGE_TYPE_NOT_SUPPORTED Server can't recognize image file type. Check the image file.
ERROR_UPLOAD Server can't get file data from your POST-request.
That happens if your POST-request is malformed or base64 data is not a valid base64 image.
You got to fix your code that makes POST request.
ERROR_IP_NOT_ALLOWED The request is sent from the IP that is not on the list of your allowed IPs. Check the list of your allowed IPs here.
IP_BANNED Your IP address is banned due to many frequent attempts to access the server using wrong authorization keys. To lift the ban, please, contact our support team.
ERROR_BAD_TOKEN_OR_PAGEURL You can get this error code when sending ReCaptcha V2. That happens if your request contains invalid pair of googlekey and pageurl. The common reason for that is that ReCaptcha is loaded inside an iframe hosted on another domain/subdomain. Explore code of the page carefully to find valid pageurl and sitekey values.
ERROR_GOOGLEKEY You can get this error code when sending ReCaptcha V2. That means that sitekey value provided in your request is incorrect: it's blank or malformed. Check your code that gets the sitekey and makes requests to our API.
ERROR_CAPTCHAIMAGE_BLOCKED You've sent an image that is marked in our database as unrecognizable.
Usually that happens if the website where you found the captcha stopped sending you captchas and started to send "deny access" image.
Try to override website's limitations.
MAX_USER_TURN You made more than 60 requests to in.php within 3 seconds.
Your account is banned for 10 seconds. Ban will be lifted automatically.
Set at least 100 ms timeout between requests to in.php.
ERROR: NNNN Where NNNN is numeric error code.
You exceeded request limit and your account is temporary suspended.
You should set proper timeouts. Please refer to Request limits for more info.

List of res.php errors

Error code Description Action
CAPCHA_NOT_READY Your captcha is not solved yet. Make 5 seconds timeout and repeat your request.
ERROR_CAPTCHA_UNSOLVABLE We are unable to solve your captcha - three of our workers were unable solve it or we didn't get an answer within 90 seconds (300 seconds for ReCaptcha V2).
We will not charge you for that request.
You can retry to send your captcha.
ERROR_WRONG_USER_KEY You've provided key parameter value in incorrect format, it should contain 32 symbols. Stop sending requests. Check your API key.
ERROR_KEY_DOES_NOT_EXIST The key you've provided does not exists. Stop sending requests. Check your API key.
ERROR_WRONG_ID_FORMAT You've provided captcha ID in wrong format. The ID can contain numbers only. Check the ID of captcha or your code that gets the ID.
ERROR_WRONG_CAPTCHA_ID You've provided incorrect captcha ID. Check the ID of captcha or your code that gets the ID.
ERROR_BAD_DUPLICATES Error is returned when 100% accuracy feature is enabled. The error means that max numbers of tries is reached but min number of matches not found. You can retry to send your captcha again.
REPORT_NOT_RECORDED Error is returned to your complain request if you already complained lots of correctly solved captchas. Make sure that you're sending complain requests only for incorrectly solved captchas.
ERROR: NNNN Where NNNN is numeric error code.
You exceeded request limit and your account is temporary suspended.
You should set proper timeouts. Please refer to Request limits for more info.

Request limits

Please remember and understand that each of your requests to our API generates multuple requests to our databases. That's why we ask to set proper timeouts for your requests and use proper error handling for cases when server returns an error (error message, HTTP error or HTML page with error).

For example:

  • If server returns ERROR_NO_SLOT_AVAILABLE make a 5 seconds timeout before sending next request.
  • If server returns ERROR_ZERO_BALANCE set the timeout to 60 seconds.
  • After uploading a captcha wait a least 5 seconds (10-20 for recaptcha) and only then try to get the answer.
  • If captcha is not solved yet - retry in 5 seconds.

If your timeouts are configured incorrectly your account or IP address will be temporary blocked and server will return an error. See the list of error codes in the table below.

List of error codes for request limitations

Error code Blocking time Blocking reason
ERROR: 1001 10 minutes You received 120 ERROR_NO_SLOT_AVAILABLE errors in one minute because your current bid is lower than current bid on the server
ERROR: 1002 5 minutes You received 120 ERROR_ZERO_BALANCE errors in one minute because your balance is out
ERROR: 1003 30 seconds You are getting ERROR_NO_SLOT_AVAILABLE because you are uploading many captchas and server has a long queue of your captchas that are not distributed to workers.
You received three times more errors than amount of captchas you sent (but not less than 120 errors). Increase the timeout if you see this error.
ERROR: 1004 10 minutes Your IP address is blocked because there were 5 requests with incorrect API key from your IP.
ERROR: 1005 5 minutes You are making too many requests to res.php to get answers.
We use the following rule to block your account: R > C * 20 + 1200
Where:
R - the amount of your requests
C - the amount of captchas you've uploaded
That means that you don't have to make more than 20 requests to res.php per each captcha.
Please remember that balance request sent to res.php also counts!
To get your answer faster without a risk to be blocked you can use pingback feature and we will send you the answer when your captcha is solved.
MAX_USER_TURN 10 seconds You made more than 60 requests to in.php within 3 seconds. Set at least 100 ms timeout between requests to in.php.

Using proxies

Proxies can be used to solve ReCaptcha V2 from the same IP address as you load the page.
Using proxies is not obligatory at the moment but in future algorithms of ReCaptcha and FunCaptcha can be changed and it will be required.
And even now some websites check IP address used for solving ReCaptcha V2. So we recommend you to be ready for these changes.

If you send us the proxy, we check it's availability trying to open the website through you proxy, and if we can't do that we will not use your proxy.
If we're able to use your proxy - we'll load the ReCaptcha through it for solving.

We don't have our own proxy servers that we can offer to you so you have to use 3rd-party services or setup your own proxy.

We support the following proxy types: SOCKS4, SOCKS5, HTTP, HTTPS with authentication by IP address or login and password.

If your proxy uses IP authentication you have to add our IP addresses to the list of allowed IPs of the proxy:

207.148.116.172

Then provide your proxy IP address and port as a value for proxy parameter.
And the type of your proxy as a value for proxytype parameter.

If your proxy uses login/password authentication you have to include your credentials in proxy parameter.

POST parameters for proxies

POST parameter Type Required Description
proxy String No Format for IP authentication: IP_address:PORT
Example: proxy=123.123.123.123:3128
Format for login/password authentication: login:password@IP_address:PORT
Example: proxy=proxyuser:strongPassword@123.123.123.123:3128
proxytype String No Type of your proxy: HTTP, HTTPS, SOCKS4, SOCKS5.
Example: proxytype=SOCKS4

Pingback (callback)

We provide a pingback (callback) option that allows you to get the answer for your captcha automatically when it's ready.
It allows you to get answers without making requests to http://azcaptcha.com/res.php and also allows you to avoid account suspension.

To receive automated callback you have to:

  • Register your callback URL.
  • Provide your callback URL as a value for pingback parameter of your request to http://azcaptcha.com/in.php.
  • Process HTTP POST request coming from our server to your callback URL. It contains captcha ID and the answer.

Manage pingback URLs

You can manage your pingback URLs making HTTP GET requests to http://azcaptcha.com/res.php
Request parameters are described in the table below.

Important: pingback URL can be added only from the same IP address that your URL is pointing at.

List of GET request parameters for http://azcaptcha.com/res.php

GET parameter Type Required Description
key String Yes your API key
action String Yes add_pingback - register new pingback URL
get_pingback - get the list of your pingback URLs
del_pingback - delete pingback URL
addr String - Your pingback URL.
For example: http://mysite.com/pingback/url/ or 123.123.123.123/pingback/url/
You can use 'all' value together with del_pingback to delete all your URLs.
json Integer
Default: 0
No 0 - server will send the response as plain text
1 - tells the server to send the response as JSON

Request examples

Add pingback:

http://azcaptcha.com/res.php?key=2abc234de56fab7c89012d34e56f6789&action=add_pingback&addr=http://mysite.com/test.php

List pingback URLs:

http://azcaptcha.com/res.php?key=2abc234de56fab7c89012d34e56f6789&action=get_pingback&json=1

Delete all pingback URLs:

http://azcaptcha.com/res.php?key=2abc234de56fab7c89012d34e56f6789&action=del_pingback&addr=all

Complain about incorrectly solved captcha

If your captcha is solved incorrectly you can make a complain sending a HTTP GET request to http://azcaptcha.com/res.php with action parameter set to reportbad and ID of incorrectly solved captha.
Our moderators will check your captcha and worker's answer and decide was the answer correct or not.

If moderator decides that anwers were in fact incorrect we'll return funds to your balance.

Your reports also help us to ban workers that are making too many mistakes.

Important: don't try to report correctly solved captchas. If you do that your account will be banned.
Please understand that moderators are humans too and they can also make mistakes, don't contact us if moderator marked few incorrect answers as correct.

List of GET request parameters for http://azcaptcha.com/res.php

GET parameter Type Required Description
key String Yes your API key
action String Yes reportbad - report incorrectly solved captha.
id String Yes ID of incorrectly solved captha.
json Integer
Default: 0
No 0 - server will send the response as plain text
1 - tells the server to send the response as JSON

Server will return OK_REPORT_RECORDED response to your request. Or an error code if something went wrong.

If you're getting too many incorrectly solved captchas you may provide additional parameters with your captcha to help wokers to solve it correctly

Additional methods

You can also get some additional information with our API, like balance, current rate, etc.
Please check available parameters in the table below.

List of GET request parameters for http://azcaptcha.com/res.php

GET parameter Type Required Description
key String Yes your API key
action String Yes getbalance — get your balance
get — get answers for multiple captchas with one request.
Requires the list of captcha IDs in ids parameter.
get2 — get the price of sent captcha and the answer.
Requires captcha ID in id parameter.
ids String - Comma separated IDs of your captchas.
json Integer
Default: 0
No 0 - server will send the response as plain text
1 - tells the server to send the response as JSON

Code Examples

Or simply searching AZcaptcha OR rucaptcha on GitHub. If code is made for rucaptcha.com just replace the URL to AZcaptcha.com, API is the same.

Also you can check examples kindly provided by our users:

General Software Integration Using 2captcha.com anti-captcha rucaptcha.com API

AZcaptcha is the cheapest and best captcha solver in market.
If our service is not integrated with your software and you want to use our service.

Now you can do that easily by using our 2captcha api gateway.

2captcha api gateway can bypass all types of captchas including recaptcha v2 and invisible recaptcha.
To use our 2captcha gateway please check this page

2CAPTCHA,DBC AND ANTICAPTCHA API SUPPORT


We’ve designed a captcha gate, which allows you to redirect traffic from other captcha services through AZcaptcha. Currently, we’ve integrated the following services: - 2captcha.com - deathbycaptcha.com - anti-captcha.com
Manual edit in windows %SystemRoot%\System32\drivers\etc\hosts C:\Windows\System32\drivers\etc\hosts or linux /etc/hosts
                149.28.242.111 2captcha.com
                149.28.242.111 www.2captcha.com
                149.28.242.111 api.anti-captcha.com
                149.28.242.111 api.rucaptcha.com
            
- Open your software or application and select 2captcha anti-captcha rucaptcha as captcha solver service provider. - Use your AZcaptcha API Key as Key. (32 character) - Re-run your application and check the answers.
Redirection

The gates are redirecting the following actions to our service:
  • get balance
  • submit image captcha
  • retrieve image captcha
  • submit recaptcha
  • retrieve recaptcha response

In other words, if you have software that works with any of the above services, using the gate will allow you to use our service, with the same software. This is achieved by running a batch program, that writes config information into the hosts file of the Windows operating system. All this is done automatically, all you have to do is run it. For linux, we have a python script that allows you to toggle (enable / disable) a pair of IP DOMAIN

The last step, is to use replace access token OR username & password with credentials from magetyperz. In this way, the programs will run even though they were built for one of the services above, but in reality our service will be used for completion.

In case you don’t want to use the gate anymore, you can edit the hosts file which is located here: %SystemRoot%\System32\drivers\etc\hosts
On linux, you’ll find the hosts file in /etc/hosts
Both operating systems require admin / root access in order to modify the files
For more details about the hosts file check this link
Installation

View code here
Once you got it, go to scripts/windows folder, and run bat file for the service you want to redirect
It will ask you for administrator rights, because it’s writing to a system file, allow it, and the gate should be enabled within few seconds
For linux, here’s the usage of the script: ./linux_hosts.py 127.0.0.1 site.com which can be found in scripts/linux


You can view it on github here