Core Solver API

A high-performance hCaptcha solving service with a simple REST API.

Overview

Submit hCaptcha challenges and receive solved tokens. Create a task, then poll for the result.

Base URL

https://coresolver.lol

Protocol

HTTP POST, JSON bodies

Supported Captcha Types

HCaptchaTask

hCaptcha image challenge solving with required proxy support

Flow

POST /createTask — submit the captcha challenge, receive a taskId
POST /getTaskResult — poll until status is ready or an error is returned
Use the gRecaptchaResponse token in your request to the target site

Example

curl

curl -X POST https://coresolver.lol/createTask \
  -H "Content-Type: application/json" \
  -d '{
    "clientKey": "your-api-key",
    "task": {
      "type": "HCaptchaTask",
      "websiteURL": "https://example.com/login",
      "websiteKey": "your-hcaptcha-sitekey"
    }
  }'

Authentication

Pass your API key as clientKey in every request body. If the server has no keys configured, any value is accepted.