This class filters spam registrations and spam comments at web-site. It's a client application for cloud anti-spam service cleantalk.org.
In normal use the application creates an WebService::Antispam, and configures it with values - API key, server URL, timeouts and etc. It then make a request call with values of site visitor - text comment, sender ip, sender email, form fill time and etc. This request then passed to one of cleantalk.org servers via HTTP + JSON. Server returns an answer encoded with JSON, this answer consist values indicates spam or not this comment/registration by site visitor.