API version 2 works on address https://api.capmonster.cloud and it works only via HTTP POST methods, data format is JSON.
To solve a captcha, you need:
Create captcha task via via createTask method which will return task ID.
Wait for a while. Depending on the system load, you will receive an answer after a time in the range from 300ms to 6s.
Request captcha solution with getTaskResult method. If captchas is not solved yet, go to step #2.