Event notifiers: theory

Hiya, I haven't seen a lot of talk about event notifiers on here, I guess people still believe in security by obscurity.

I'm a developer and I kinda just want to understand the theory behind the event notifiers people are buying: How do these notifiers get their information? Do they have level 1 accounts in all servers and realms that are feeding a server info about events, and then the notifier clients access that info with an API? Or are these events network sniffable? If so: what packets contain event info?

I couldn't find any discussion topics through search, so sorry if I break a rule or double post or something.

all i know is that there are lvl 1 characters on every realm, usually more than one, maybe from different notifiers. Because to get the event info you need to be on the realm

level 1 bots in the realm they detect when oryx shouts out example
"GRRRR 3 LICHES LEFT" or something

Notifiers websites have a bot in each realm of each server. They read what Oryx say and transmit the information to the botmaster's server.
This server dispatch the informations to all his clients.

Needless to say, nothing is transmitted to the client if he doesnt have a valid notifier account.
Therefore, a friendly reminder : THERE IS NO KEYGENS FOR SERVERS-VALIDATED STUFF (Minecraft, Steam Keys, Eset-Nod User passwords, accounts in general)

the bots just sit inside a realm and hear oryx shout and that information goes to the notifier