Best Cloudflare Challenge Solver

Cloudflare Challenge Solver

What is Cloudflare Challenge

Cloudflare Challenge is a bot mitigation mechanism that uses JavaScript challenges, browser fingerprinting, and CAPTCHA as fallback mechanisms to detect and block automated or suspicious traffic.

More Information For Cloudflare Challenge CAPTCHA Solver

How to Solve Cloudflare Challenge - API Guide

CapSolver auto CAPTCHA solving service can easily solve Cloudflare Challenge, our services can be used through CapSolver's API. Register for CapSolver and getting our CAPTCHA services.

Step 1 : Creating a Task

Create the task with the createTask.

In the process of using challenge, we must input websiteURL and websiteKey, other parameters are optional.

Task Object Structure

Properties Type Required Description
type String Required AntiCloudflareTask
websiteURL String Required The address of the target page.
proxy String Required Your Static proxy or Sticky proxy. Learn Using proxies
userAgent String Optional The user-agent you used to request the target website. Only Chrome's userAgent is supported.
html String Optional The response of requesting the target website, it usually contains "Just a moment..." and status code is 403. we need this html for some websites, please be sure to use your sticky proxy to dynamically scrape the HTML every time.

Example Request

txt Copy 
POST https://api.capsolver.com/createTask
Host: api.capsolver.com
Content-Type: application/json
json lines Copy 
{
  "clientKey": "YOUR_API_KEY",
  "task": {
    "type": "AntiCloudflareTask",
    "websiteURL": "https://www.yourwebsite.com",
    "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36",
    "html": "<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title>...",
    "proxy": "ip:port:user:pass"
  }
}

Example Response

json lines Copy 
{
  "errorId": 0,
  "status": "idle",
  "taskId": "df944101-64ac-468d-bc9f-41baecc3b8ca"
}

Step 2 : Getting Results

Use the getTaskResult method to get the recognition results

Depending on the system load, you will get the results within the interval of 1s to 20s

Example Request

txt Copy 
POST https://api.capsolver.com/getTaskResult
Host: api.capsolver.com
Content-Type: application/json
json lines Copy 
{
  "clientKey": "YOUR_API_KEY",
  "taskId": "df944101-64ac-468d-bc9f-41baecc3b8ca"
}

Example Response

json lines Copy 
{
  "errorId": 0,
  "taskId": "df944101-64ac-468d-bc9f-41baecc3b8ca",
  "status": "ready",
  "errorCode": "",
  "errorDescription": "",
  "solution": {
    "cookies": {
        "cf_clearance": "Bcg6jNLzTVaa3IsFhtDI.e4_LX8p7q7zFYHF7wiHPo...uya1bbdfwBEi3tNNQpc"
    },
    "token": "Bcg6jNLzTVaa3IsFhtDI.e4_LX8p7q7zFYHF7wiHPo...uya1bbdfwBEi3tNNQpc",
    "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36"
  }
}

Solving Cloudflare Challenge using CapSolver SDK

Popular CAPTCHAs supported

Easily use CapSolver to solve CAPTCHAs

We ensure that integrating our products into your infrastructure is as effortless as possible. With multiple language support and ready-to-use code examples, a quick and easy start to your web project is a guarantee.

Documentation For Developers

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Recognize a wide range of CAPTCHA types

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