About Akamai

Akamai employs a dynamic, multi-layered verification and behavioral analysis approach at its core, using cookies like _abck and bm_sz to dynamically validate client legitimacy while tracking user interaction patterns. This constitutes a user-friendly CAPTCHA system.

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EZcaptcha: A More Advanced Solution for Akamai

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EZ captcha API Guide: Solve Akamai Easily

EZ Captcha makes solving Akamai simple and efficient. You can easily integrate our service using EZ Captcha's API, providing seamless and automated captcha solving for your applications.

SOLUTION	SPEED	PRICE / 1000 REQUESTS
Akamai	< 3 s	$ 2.5
AkamaiSBSD	< 3 s	$ 2.5

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Akamai

1-Create Task

Create a task through the createTask method

Request host： https://api.ez-captcha.com

Request api： https://api.ez-captcha.com/createSyncTask

Request format：POST application/json

2-Parameter Structure

1. Some websites still consider the abck cookie valid even when it's '~-1~', so we recommend validating its effectiveness each time you get it, up to eight attempts. The number of times sensor_data is sent depends on the website's protection level.

2. Use dynamic proxies to prevent anti-scraping measures.

3. The lang parameter and the accept-language request header should be consistent. It is also recommended that the lang parameter aligns with the region of the proxy server.

4. Only Chrome ua are supported. It is recommended to use the latest version of Chrome's ua.It is recommended that the ua version and Chrome TLS version be consistent.

5. Some websites have strict detection mechanisms. When sending requests, please disable global proxies and packet capture tools (e.g., Clash, Charles) on your computer to prevent interference.

6. Most website v3 url change randomly, so you need to dynamically obtain them with each request.

7. When using the _abck cookie finally, ensure the IP, UA, and TLS settings are the same as when sending the previous sensor_data packet.

8. The API returns payload and encodedata in the response body. payload represents the sensor_data that needs to be sent.

Parameter	Type	Required	Description
clientKey	string	true	Account client key, which can be found in the personal center
task	object	true	The task parameter object, the details are the following items in this table
type	string	true	Task type, such as AkamaiWEBTaskProxyless
pageUrl	string	true	your target page url that you want to bypass
v3Url	string	true	Enter the Akamai v3 script URL. Note that for most websites, this URL changes with each request, so it needs to be obtained dynamically. This is the v3 URL address, not the script returned by the v3 URL.
bmsz	string	true	bm sz cookie value (need to be the latest)
abck	string	true	_abck cookie value (need to be the latest)
ua	string	true	The UserAgent used in your program (must be consistent) only supports Chrome's UserAgent. It is recommended to use the latest version of Chrome's UserAgent.
lang	string	true	The language used, consistent with the accept-language header in the request, such as 'en-GB'.Avoid using en-US whenever possible.
script_base64	string	true	Only needs to be sent in the first packet, the value is the Base64 encoded form of the akamai v3 javascript.
index	string	true	Indicates the sequence number of the current packet, starting from 0.
encodeData	string	true	The value is empty in the first packet; it is obtained from the first packet's return value. After the first packet, only this value needs to be populated; script_base64 does not need to be populated.

3-Request Example

4-Response Structure

Parameter	Type	Description
errorId	Integer	Error message: 0 - no error, 1 - error
status	string
solution	Object	The recognition result will be different for different types of captcha. For Akamai, the result is payload in the object.
solution.payload	string	The returned payload is submitted as sensor_data to the website api via POST request.
solution.encodedata	string	encodedata

5-Response Example

6-428 StatusCode

If after the above steps, a 428 status code response is received when sending a request to the target url, it indicates that the Sec-CPT mechanism has been triggered. You need to follow these steps:

1. Obtain the chlg_duration parameter from the response body for subsequent operations.

2. Once again, retrieve sensor_data according to previous steps with the new pageUrlparameter as the original pageUrl + '/_sec/cp_challenge/ak-challenge-3-6.htm' (the version number in the path should be changed to the correct version used by the website), then submit.

3. Sleep for a duration of time based on the chlg_duration parameter obtained earlier.

4. Retrieve sensor data once again and submit.

5. If successful in the end, you will receive sec-cpt cookie from the response. Then you can make another request to access the target interface.

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