ReCAPTCHA Image (Phone)

Overview

Solve Recaptcha with ultra-fast speed, top 1 accuracy in the market. We provide services to solve all types of ReCaptcha Image on phones.

📱

This service allows you to send captcha images and receive indices of cells to click to solve the captcha.

ReCAPTCHA Mobile

1. Create Task

Request

POST https://api.achicaptcha.com/createTask

Parameters

Parameter Name	Data Type	Required?	Description
`clientKey`	string	yes	Api key
`task.type`	string	yes	ReCaptchaPhoneTask
`task.subType`	string	yes	Value equals 0
`task.image`	string	yes	Captcha image in base64 format, capture the captcha image display area (no border, only small square cells)
`task.other`	string	yes	Question\|Grid count • Question: "cars" (only take text from bold part) • Grid count: 3 (or 4, 5) → other: "cars\|4"

Request Example

POST /createTask HTTP/1.1
Host: api.achicaptcha.com
Content-Type: application/json
 
{
  "clientKey": "YOUR_API_KEY",
  "task": {
    "type": "ReCaptchaPhoneTask",
    "subType": "0",
    "image": "iVBORw0KGgoAAAANSUhEUgAA...(base64 encoded image)",
    "other": "cars|4"
  }
}

Response

When successful, server returns errorId = 0 and taskId

{
  "errorId": 0,
  "taskId": "f2fc70d6-c76b-4fba-9480-205ac1fe9fb9"
}

2. Get Result

Request

POST https://api.achicaptcha.com/getTaskResult

Parameters

Parameter Name	Data Type	Required?	Description
`clientKey`	string	yes	Api key
`taskId`	string	yes	TaskId obtained from (1)

Request Example

POST /getTaskResult HTTP/1.1
Host: api.achicaptcha.com
Content-Type: application/json
 
{
  "clientKey": "YOUR_API_KEY",
  "taskId": "f2fc70d6-c76b-4fba-9480-205ac1fe9fb9"
}

Response

{
  "errorId": 0,
  "status": "ready",
  "solution": "0,5,9"
}

Note: For type "grid", solution is a list of image indices to click, starting from 0

Status Explanation

errorId = 0 and status = ready: Successfully solved, read result in solution
errorId = 0 and status = processing: Solving captcha, wait 2-3 seconds and try again
errorId > 0: System error, returns error code and description

Integration Examples

import requests
import time
 
def solve_recaptcha_phone(image_base64, question, grid_count, api_key='YOUR_API_KEY'):
    # Step 1: Create task
    create_task_url = 'https://api.achicaptcha.com/createTask'
    create_task_payload = {
        'clientKey': api_key,
        'task': {
            'type': 'ReCaptchaPhoneTask',
            'subType': '0',
            'image': image_base64,
            'other': f'{question}|{grid_count}'
        }
    }
    
    response = requests.post(create_task_url, json=create_task_payload)
    result = response.json()
    
    if result['errorId'] != 0:
        raise Exception(result['errorDescription'])
    
    task_id = result['taskId']
    
    # Step 2: Get result
    get_result_url = 'https://api.achicaptcha.com/getTaskResult'
    
    while True:
        time.sleep(2)  # Wait 2-3 seconds
        
        get_result_payload = {
            'clientKey': api_key,
            'taskId': task_id
        }
        
        response = requests.post(get_result_url, json=get_result_payload)
        result = response.json()
        
        if result['errorId'] > 0:
            raise Exception(result['errorDescription'])
        
        if result['status'] == 'ready':
            return result['solution']  # Returns "0,5,9" - indices to click
        
        # If status == 'processing', continue loop
 
# Usage
image_base64 = 'iVBORw0KGgoAAAANSUhEUgAA...'  # Base64 encoded captcha image
question = 'cars'  # Text from bold part
grid_count = 4  # Grid count (3, 4, or 5)
solution = solve_recaptcha_phone(image_base64, question, grid_count, 'YOUR_API_KEY')
print('Grid indices to click:', solution)  # Example: "0,5,9"
 
# Use solution to click corresponding cells
indices = [int(i) for i in solution.split(',')]
for index in indices:
    # Click cell with corresponding index
    print(f'Click cell index: {index}')

Common Error Codes

Error Code	Description	Notes
0	success	Success
1	processing	Processing
2	missing required fields	Missing required fields, check parameters again
3	task not supported	Task type not supported
4	task creation failed	Task creation failed
5	client key does not exist	API key does not exist, check API key again
6	insufficient account balance	Insufficient account balance, add more credits
7	task failed, please create a new task	Task failed, please create a new task
8	task ID does not exist	Task ID does not exist

Best Practices

For best results when using Achicaptcha API, follow these principles:

1. Prepare Captcha Image

Capture the captcha image display area clearly, without borders or other UI elements
Only include small square cells (grid) of the captcha
Image in base64 format
Ensure image has sufficient resolution for recognition

2. Determine Accurate Information

Get question from bold text part of captcha (example: "cars", "traffic lights")
Determine correct grid count (3x3, 4x4, or 5x5)
Format other correctly: "question|grid_count" (example: "cars|4")

3. Polling Interval

Wait at least 2-3 seconds between result checks
Don't spam API with too many consecutive requests
Set timeout to avoid infinite loops (recommended 120 seconds)

4. Process Results

Solution returned is a string of indices to click, separated by commas (example: "0,5,9")
Index starts from 0, counting from left to right, top to bottom
Parse string and click corresponding cells

5. Retry Logic

Implement retry for temporary errors like ERROR_NO_SLOT_AVAILABLE
Use exponential backoff when retrying
Limit maximum retry attempts

6. API Key Security

Don't hardcode API key in code
Use environment variables
Don't expose API key on client-side

Useful links:

Token Token