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Introduction

Captcha-solver is an API service for automated captcha solving: reCAPTCHA v2, v2 Enterprise and v3, Cloudflare Turnstile, Yandex SmartCaptcha, GeeTest v3 and v4, Tencent, and image captchas. The request/response format is compatible with anti-captcha (createTask/getTaskResult), so existing client libraries work without rewriting — just point them at our base URL.

You get an API key right after registration, and pay only for solved tasks.

Documentation sections#

  • Authentication — API key, base URL, request format.
  • How it works — the asynchronous model: createTask, polling getTaskResult, task lifetime.
  • Methods — createTask, getTaskResult, getBalance, and supported captcha types.
  • Captcha types — task parameters and solution formats.
  • Using the solution — pass the result to your website.
  • Code examples — ready-to-use examples in several languages.
  • Errors — error codes and how to handle them.
  • Vibe coding: llms.txt — a link for your AI assistant to write the integration for you.

Official Python SDK#

Install the SDK with:

pip install captcha-solver-api

The SDK supports reCAPTCHA v2 and v3, reCAPTCHA v2 Enterprise, Cloudflare Turnstile, GeeTest v3/v4, Yandex SmartCaptcha, Tencent, image-to-text, and coordinate captchas. It provides both synchronous and asynchronous clients.

Requires Python 3.9+. Package on PyPI · SDK source · SDK examples.

Official JavaScript SDK#

Install the SDK with:

npm install @captcha-solver-api/javascript-sdk

The SDK supports reCAPTCHA v2 and v3, reCAPTCHA v2 Enterprise, Cloudflare Turnstile, GeeTest v3/v4, Yandex SmartCaptcha, Tencent, image-to-text, and coordinate captchas. It works in Node.js and modern browsers and includes TypeScript declarations.

Requires Node.js 18+ for server-side use. Package on npm · SDK source · SDK examples.