This API was created by Submitia. The Submitia Captcha Solver API endpoint is located at http://api.captchasolutions.com/solve. You can find the Submitia portal / hompage here. The Submitia Captcha Solver API is not currently available on the RapidAPI marketplace.
Click "Request this API on RapidAPI" to let us know if you would like to access to this API.
Meanwhile, you can check out the top APIs that currently available for developers.