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API Tutorials

Endpoint-by-endpoint API tutorials for reCAPTCHA, Turnstile, hCaptcha, image OCR, GeeTest, and more.

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API Tutorials Building a Node.js SDK for CaptchaAI API
Build a production-ready Node.js SDK for the Captcha AI API — typed methods for each CAPTCHA type, promise-based polling, configurable timeouts, and proper erro...

Building a Node.js SDK for CaptchaAI API

Build a production-ready Node.js SDK for the Captcha AI API — typed methods for each CAPTCHA type, promise-bas...

Mar 11, 2026
API Tutorials Proxy Authentication Methods for CaptchaAI API
Configure proxy authentication with Captcha AI — IP whitelisting, username/password, SOCKS 5, and passing proxies directly to the solving API.

Proxy Authentication Methods for CaptchaAI API

Configure proxy authentication with Captcha AI — IP whitelisting, username/password, SOCKS 5, and passing prox...

Mar 09, 2026
API Tutorials Building a PHP Composer Package for CaptchaAI
Build a PHP Composer package for the Captcha AI API — PSR-18 HTTP client support, typed solver methods, exception hierarchy, and Guzzle integration.

Building a PHP Composer Package for CaptchaAI

Build a PHP Composer package for the Captcha AI API — PSR-18 HTTP client support, typed solver methods, except...

Mar 08, 2026
API Tutorials Java CompletableFuture + CaptchaAI: Async CAPTCHA Pipeline
Build an async CAPTCHA solving pipeline in Java using Completable Future — parallel submission, non-blocking polling, and result aggregation with Captcha AI.

Java CompletableFuture + CaptchaAI: Async CAPTCHA Pipeline

Build an async CAPTCHA solving pipeline in Java using Completable Future — parallel submission, non-blocking p...

Mar 07, 2026
API Tutorials Solve BLS CAPTCHA with Node.js and CaptchaAI
Step-by-step Node.js tutorial for solving BLS grid CAPTCHAs using the Captcha AI API.

Solve BLS CAPTCHA with Node.js and CaptchaAI

Step-by-step Node.js tutorial for solving BLS grid CAPTCHAs using the Captcha AI API. Includes grid extraction...

Mar 07, 2026
API Tutorials Solving CAPTCHAs with Kotlin and CaptchaAI API
Complete guide to solving re CAPTCHA, Turnstile, and image CAPTCHAs in Kotlin using Captcha AI's HTTP API with Ok Http, Ktor client, and coroutines.

Solving CAPTCHAs with Kotlin and CaptchaAI API

Complete guide to solving re CAPTCHA, Turnstile, and image CAPTCHAs in Kotlin using Captcha AI's HTTP API with...

Mar 06, 2026
API Tutorials Solving CAPTCHAs with R for Research Data Collection
Complete guide to solving re CAPTCHA, Turnstile, and image CAPTCHAs in R using Captcha AI's HTTP API with httr 2, httr, and rvest for academic and research data...

Solving CAPTCHAs with R for Research Data Collection

Complete guide to solving re CAPTCHA, Turnstile, and image CAPTCHAs in R using Captcha AI's HTTP API with httr...

Mar 05, 2026
API Tutorials Solve GeeTest v3 CAPTCHA with Node.js and CaptchaAI
Step-by-step Node.js tutorial for solving Gee Test v 3 slide puzzle CAPTCHAs using the Captcha AI API.

Solve GeeTest v3 CAPTCHA with Node.js and CaptchaAI

Step-by-step Node.js tutorial for solving Gee Test v 3 slide puzzle CAPTCHAs using the Captcha AI API. Include...

Mar 04, 2026
API Tutorials How to Solve reCAPTCHA v2 Callback Using API
how to solve re CAPTCHA v 2 callback implementations using Captcha AI API.

How to Solve reCAPTCHA v2 Callback Using API

Learn how to solve re CAPTCHA v 2 callback implementations using Captcha AI API. Detect the callback function,...

Mar 01, 2026