How to Bypass Math Captcha Using 2Captcha API

Math captchas can be a significant obstacle in automation tasks. Using the 2Captcha API, you can integrate captcha-solving capabilities into your projects seamlessly. This guide provides a step-by-step explanation of the process, whether you're writing code or using tools like browser extensions.

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Step 1: Get Started with 2Captcha

1. Visit 2Captcha and create an account.
2. Add funds to your account to ensure uninterrupted usage.
3. Retrieve your API key from the dashboard. This key is required for all API interactions.

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Step 2: Prepare Your Tools

No advanced tools are necessary. Ensure you have:

• The ability to send HTTP requests (e.g., using Python’s requests library).
• A math captcha image (e.g., captcha.png) or its Base64-encoded string representation.

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Step 3: Solve Math Captchas Step by Step

What You Need:

• A math captcha image file (e.g., captcha.png).
• Or a Base64-encoded string of the captcha image.

How to Use the 2Captcha API:

To solve a math captcha, send the image to the normal-captcha API method. Encode the image in Base64 and include the following parameters in your request:

• math=true (indicates that the captcha contains a mathematical problem).
• numeric=1 (ensures the solution consists only of numbers).

Example Request to Solve a Math Captcha:

POST https://api.2captcha.com/createTask

{
  "clientKey": "YOUR_API_KEY",
  "task": {
    "type": "ImageToTextTask",
    "body": "BASE64_ENCODED_IMAGE_STRING",
    "math": true,
    "numeric": 1
  }
}

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Retrieving the Captcha Solution:

After submitting the request, you will receive a taskId. Use this ID to check the solution.

Example Request to Retrieve Captcha Solution:

POST https://api.2captcha.com/getTaskResult

{
  "clientKey": "YOUR_API_KEY",
  "taskId": "12345abcde"
}

Example Response:

{
  "status": "ready",
  "solution": {
    "text": "12345"
  }
}

Replace YOUR_API_KEY and BASE64_ENCODED_IMAGE_STRING with your actual API key and Base64-encoded captcha image, respectively.

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Step 4: Verify the Results

Successful Response:

If the captcha is solved successfully, the response will look like this:

{
  "status": "ready",
  "solution": {
    "text": "12345"
  }
}

Troubleshooting:

If the captcha cannot be solved immediately, you may receive:

{
  "status": "processing"
}

In such cases, refer to the error codes provided by the API for further guidance.

Provide Feedback to Improve Accuracy:

If the solution is incorrect, report it using the reportIncorrect endpoint with the captcha ID.

Example Request for Incorrect Captcha:

POST https://api.2captcha.com/reportIncorrect

{
  "clientKey": "YOUR_API_KEY",
  "taskId": "12345abcde"
}

If the solution is correct but not marked as such, use the reportCorrect endpoint to notify the system.

Example Request for Correct Captcha:

POST https://api.2captcha.com/reportCorrect

{
  "clientKey": "YOUR_API_KEY",
  "taskId": "12345abcde",
  "correct": true
}

Replace YOUR_API_KEY and 12345abcde with your actual API key and captcha ID.

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Best Practices for Optimal Results

• Use clear, high-quality captcha images (maximum size: 1000px or 100 kB).
• Monitor your account balance to avoid interruptions during critical tasks.
• Use proxies to prevent IP blocks when performing web scraping.
• We recommend using our official libraries to interact with the 2captcha API. These libraries are designed to simplify integration and ensure compatibility with our service. You can find them on our official GitHub repository: https://github.com/2captcha.

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Additional Resources

• Learn more about solving captchas: 2Captcha.
• Explore the 2Captcha API documentation for advanced techniques: API Documentation.
• Review web scraping tips and best practices: FAQ.

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By following this guide, you are now equipped to handle math captchas efficiently. Whether you are automating workflows or seeking quick solutions, the 2Captcha API ensures reliable performance. Proceed with confidence.