How to Integrate an hCaptcha Solving API: Parameters, Task Flow, Token Injection, and Rejection Troubleshooting

Explains how an hCaptcha solving API works: what parameters to prepare before submitting tasks, how to handle Enterprise rqdata, how to complete polling or callback within the ~120-second validity window, and how to inject tokens and trigger data-callback in Playwright, Puppeteer, or Selenium, plus the troubleshooting order when the service returns a token but the target site rejects it.