By default, Vulcan acts silently and does not 'prevent' the player from cheating, but simply observes their actions and flags for things out of the vanilla boundaries (through the configuration certain checks are able to be turned to 'setback' to actively prevent players from cheating)
Customization
Vulcan has the most extensive configuration file and API of any anti-cheat on this website, and others. Practically every part of Vulcan is configurable, so you can set it up exactly how you want.
Simple
No need to spend money on a fancy configuration or an additional addon, Vulcan simply works as-is - just drag and drop.
Vulcan has a wide range of features to help quickly identify and remove cheaters from your server.
Client Brand Alerts:
When a player joins the server, they send special messages through plugin channels with the 'brand' of their client.
Spoiler: Note
Full Alert Customization:
Vulcan allows you to fully customize its alert messages. By default, all sorts of useful information are displayed to staff, such as the player's ping, the server's TPS, the player's client version, a description of the check, and all of the details associated with the flag, with even more placeholders available to you. You are also able to color code your alerts based on how many violations the player has set off!
Advanced Violation and Punishment Logs:
Vulcan's advanced logging system keeps track of all violations and punishments on your server in an easy-to-understand way, while also providing you with plenty of useful information.
Spoiler: Violation Logging
Spoiler: Punishment Logging
Amazing In-Game GUI
Vulcan's amazing in-game GUI allows you to edit any check setting on the fly, even punishment commands.
Spoiler: Checks GUI
Spoiler: Checks GUI
Judgment Days
Vulcan's Judgment Day feature allows you to ban players in waves!
The following screenshot is from a 1.16.4 server with 180 players. Vulcan is seen using only 3.47% of the tick, which is not even .02% of a tick per player.
Extensive Configuration
Almost every aspect of Vulcan is configurable, down to the sensitivity and values around each check.
Spoiler: Example Check Configuration
Discord Integration
Vulcan has built-in compatibility to send its alerts and punishments to a configurable discord channel!