Kasada

Create a task through sync api https://sync.ez-captcha.com/createSyncTask, and get the result directly

If you obtain an invalid token, please contact us. It will usually work normally after we optimize it.

Task Type

Task Type	Description	Price	Price(USD)

Task Type	Description	Price	Price(USD)
KasadaTaskProxyless	Kasada solution	25 POINTS	$2.5/1k
KasadaWorkTimeTaskProxyless	KasadaWorkTime solution	1 POINTS	$0.1/1k

Usage

1. How to generate /tl Payload

Request target url and be blocked by 429 status code to get the response body with a URL to /ips.js.
Do a GET request to the ips.js URL and store the response body, then it need to be sent to api later.
Make a POST request to API with the following form data:

Parameter	Type	Required	Description

Parameter	Type	Required	Description
clientKey	string	true	Your client key
type	string	true	KasadaTaskProxyless
ua	string	true	Your user-agent, please keep it consistent with the one your program uses.
ipsContent	string	true	The response body from `/ips.js`
lang	string	true	The main language of your accept-language header in your request (only send the first language)
bmsz	string	true	The `bm_sz` cookie value
domain	string	true	The domain you are generating for e.g `xx.xxxx.com`

Create Task

Example

POST https://sync.ez-captcha.com/createSyncTask
Content-Type: application/json

{
    "clientKey": "YourClientKey",
    "task": {
        "type": "KasadaTaskProxyless",
        "ua": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
        "ipsContent": "xxxx",
        "lang": "en",
        "bmsz": "xxxx",
        "domain": "xxx.xxx.com"
    }
}

Response Example

Get dt from response and use it as header X_*****_Dt on the /tl post
Get ct from response and use it as header X_*****_Ct on the /tl post
API will return a base64 encoded response. You need to decode this response to a byte array and then post it to /tl

{
	"errorId": 0,
	"solution": {
		"ct": "0rRUrDIrbJtVlXV38QPOg1vxJVyn7mGaaEyHb2b3ehOjQBGzi8OB9c42Sl5Tie4xctIT8lq1gRU8KW8IJs5E7GUd4MtNfwovogsGLqE8vHZ8rEogLWcIQQT7CHtOdZSVLRBPOU439Mh1FKsk8JqwCYJGvlTQ",
		"dt": "118hy2kz01k4x3gz6s6y78",
		"tl": "xxxxxxxxxxxxxxxxxxx"
	},
	"status": "ready"
}

* After request /tl with these parameters, the header in the response will return a new ct (x-kpsdk-ct), which needs to be included in the next request for other URLs.

The response will also return st (x-kpsdk-st), which is used to generate the worktime below.

2. How to bypass WorkTime

After post payload generate by our api to /tl , The x-*****-st value will be returned in response headers, you can use it to generate the worktime headers

Parameter	Type	Required	Description

Parameter	Type	Required	Description
clientKey	string	true	Your client key
type	string	true	KasadaWorkTimeTaskProxyless
domain	string	true	The domain you are generating for e.g `xx.xxxx.com`
userAgent	string	true	Your user-agent, please keep it consistent with the one your program uses.
st	string	true	The st value in response header of `/tl` post
workTime	string	optional	you can pregenerate your header with providing this timestamp value

Create Task

Example

POST https://sync.ez-captcha.com/createSyncTask
Content-Type: application/json

{
    "clientKey": "YourClientKey",
    "task": {
        "type": "KasadaWorkTimeTaskProxyless",
        "domain": "xxx.xxx.com",
        "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
        "st": "1704442141209",
        "workTime": "1704471401730"
    }
}

Response Example

This API will return a json value of header x-****-cd