The Public API was proposed for the next version (0.2.7.54), but due to the increased security risks of providing an unauthenticated Public API, the Public API URL is being discontinued.
This service will be available in the future through marketplaces offered by cloud platforms. Additionally, as the server-side script is open-source, you can set it up yourself.
https://github.com/gnh1201/caterpillar
