ReCaptchaV2 Classification

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

If you have received an incorrect image label, please contact us.

Task Type

For the ReCaptcha V2 image recognition solution, we offer the following task types:

Task Type	Description	Price(USD)

Task Type	Description	Price(USD)
ReCaptchaV2Classification	reCaptcha V2 Image recognition task	$0.5/1k

Please use the form data below when sending a POST request to the API

Parameter	Type	Required	Description

Parameter	Type	Required	Description
clientKey	string	true	Your client key
type	string	true	Task type, ReCaptchaV2Classification
image	string	true	The image for the challenge must be in base64-encoded format and must not contain ‘data:image/***;base64,’
question	string	true	Question ID, starting with /m/, with search options below
size	number	true	You can choose from 1, 3 or If it is 3x3, please enter 3 If it is 4x4, please enter 4 If it is 1x1, please enter 1

Create Task

Example

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

{
    "clientKey": "YourClientKey",
    "task": {
        "type": "ReCaptchaV2Classification",
        "image":"/9j/4AAQSkZJRgABAgAAAQABAAD/2wBDAAUDBAQEAwUEBAQFBQUGBwwIBwcHBw8KCwkMEQ8SEhEPERATFhwXExQaFRARGCEYGhwdHx8fExciJCIeJBweHx7/2wBDAQUFBQcGBw4ICA4eFBEUHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh",              // base 64，not contain data:image/***;base64
        "question": "/m/0pg52",  // Challenge ID
        "size": 3
    }
}

Response example

// If it is 3x3 or 4x4
{
  "objects": [ 1, 5,8 ], // The position in the image where the user should click, starting with 0
  "type": "multi"
}

//If it is 1x1
{
  "hasObject": false, // Do you need to click? An explanation is provided below.
  "type": "single"
}

Image format

Standard size 3x3: (300x300)

Click on the corresponding location based on the result returned

{
        "objects": [0,4,5], // The area of the image to click
        "type": "multi"
}

Standard size 4x4:(450x450)

Click on the corresponding location based on the result returned

{
        "objects": [4, 6, 11, 13, 14, 15], // The positions on the image where you need to click, ranging from 0 to 15
        "type": "multi"
}

1x1: the thumbnails that appear (100x100) ：

After pressing 3x3, if the image is not of the ‘imageselect’ type, the thumbnail will refresh

Resize the thumbnail to 100x100 pixels, send it to the API using the interface above, and the API will return whether a click is required

hasObject indicates whether a click is required

{
    "hasObject": true, // Determine whether it is the target object
    "type": "single"
}

How to look up a question ID

List of question IDs, for reference only

String	Question

String	Question
/m/0pg52	taxis
/m/01bjv	bus
/m/02yvhj	school bus
/m/04_sv	motorcycles
/m/013xlm	tractors
/m/01jk_4	chimneys
/m/014xcs	crosswalk
/m/015qff	traffic_lights
/m/0199g	bicycles
/m/015qbp	parking-meters
/m/0k4j	cars
/m/015kr	bridges
/m/019jd	boats
/m/0cdl1	palm-trees
/m/09d_r	mountains-or-hills
/m/01pns0	firehydrant
/m/01lynh	stairs