YOU MUST INSTALL PACKETEVENTS AS A PLUGIN IN ORDER FOR VULCAN TO WORK. IT WILL NOT WORK WITHOUT PACKETEVENTS IN YOUR PLUGIN FOLDER!!! YOU CAN DOWNLOAD IT HERE: https://www.spigotmc.org/resources/packetevents-api.80279/

(Dev Builds of PacketEvents for Latest Minecraft Versions: https://ci.codemc.io/job/retrooper/job/packetevents/) (Choose packetevents-spigot)

Vulcan is an advanced cheat detection system that operates at the packet level with version support for almost all server versions.

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)

Why Vulcan?

Support
Support tickets are responded to in minutes (mostly instantly) as long as a staff member is awake. We have staff members in all time zones, ensuring that there is always someone who can help you. Unlike competitors, there is no need to deal with an annoying bot or pay additional fees to access support!

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. Our full configuration file can be viewed here.

Simple
No need to spend money on a fancy configuration or an additional addon; Vulcan simply works as-is. Just drag and drop it and PacketEvents into your plugins folder.
Features
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

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

Judgment Days
Vulcan's Judgment Day feature allows you to ban players in waves!

Asynchronous
Almost all of Vulcan is run on a separate thread, ensuring that your server's performance is kept at its peak.

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!





Compatability


Vulcan is compatible with any server version advertised on all server versions listed in the title We only guarantee full functionality on the following Spigots/forks: Spigot, PaperSpigot, Pufferfish, and Purpur. This is not to say that Vulcan will not work on anything except these Spigots, however, they are the only ones in which functionality is 100% guaranteed without any issues.

!!! WE DO NOT SUPPORT FOLIA, MOHIST, OR FABRIC. !!!

Known Incompatible Spigots:
- CatServer
- SpigotX (and all of its forks)
- SmokSpigot
- Mohist
- FoxSpigot (and a lot of other Scalebound forks that unnecessarily change/move default methods/packages)
If you are unsure as to whether or not Vulcan will work on your particular Spigot, please try using Medusa first as both plugins use the same API for listening to packets: Medusa's Plugin Page

Due to how Vulcan injects into the player's pipeline, some plugins may also cause issues and may not allow for Vulcan to properly inject and listen to the packets sent and received by the player.

May Result in Incompatibilities:
- Grim
- ViaVersion running on the proxy (Even ViaVersion themselves recomend it be installed on backends)
- Anti-exploit or packet limiters that cancel ping/pong packets or transaction packets

Miscellaneous Incompatibilities:
- Butterfly/Drag Clicking, as well as any other irregular form of clicking or mouse modification. (This includes binding the swing or place keys to anything that is not a left or right-click. We have absolutely no way to distinguish someone who is auto-clicking 35 clicks per second or someone who has bound their attack key to the space bar. Either tell your players not to do this, or disable the auto-clicker checks)
- Non-vanilla movement mechanics
- Client-sided blocks
- Potion effect/amplifiers/enchantments out of the vanilla limits
- Any non-vanilla client (especially Lunar Client/BlazingPack)
Spoiler: Non-Vanilla Clients
GeyserMC - Vulcan automatically hooks into Floodgate and identifies Bedrock players and does not flag them (BEDROCK PLAYERS ARE TOTALLY IGNORED). GEYSER SUPPORT/EXEMPTION REQUIRES FLOODGATE-BUKKIT OR ELSE WE HAVE NO WAY OF RESOLVING WHETHER OR NOT A PLAYER IS CONNECTED THROUGH GEYSER. IF YOU ARE ON BUNGEE, YOU NEED TO DO THIS IN ORDER FOR GEYSER SUPPORT TO WORK: https://github.com/GeyserMC/Geyser/wiki/Floodgate

Disclaimers

As with every anti-cheat, there is always the possibility for false positives and bypasses, and Vulcan is no exception. If you experience either of these, please open a ticket with us in our Discord to address your concerns. With that being said, before purchasing Vulcan, please understand Vulcan's purpose. It is designed to detect blatant cheaters who use common and publicly available hacked clients. If you are looking for an anti-cheat that flags people using Vape's Aim Assist, 3.01 reach, 1% speed modification, and .0001 hitbox expansion, then you are in the wrong place. We like to be as transparent as possible with our users, so here is a list of disclaimers and things that we ask you to acknowledge and keep in mind before purchasing Vulcan.
Spoiler: Some things that Vulcan does NOT detect/have checks for
Disclaimers

Checks

The following is a full list of Vulcan's checks.
Combat:
- Aim: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T
- Auto Block: A, B, C
- Auto Clicker: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T
- Criticals: A, B
- Hitbox: A, B
- Kill Aura: A, B, C, D, E, F, G, H, I
- Reach: A, B (~3.15 Reach)
- Velocity: A, B, C (~99% Vertical, ~70% Horizontal)

Movement:
- Boat Fly: A, B
- EntitySpeed: A
- Elytra: A
- Fast Climb: A
- Flight: A, B, C, D, E
- Jesus: A, B, C, D, E
- Jump: A, B
- Motion: A, B, C, D, E, F, G
- No Slow: A, B, C
- Speed: A, B, C, D
- Sprint: A, B, C, D
- Step: A, B, C
- Strafe: A, B
- Wall Climb: A

Player:
- Bad Packets: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y
- Baritone: A, B
- Crash: A, B, C
- Fast Break: A
- Fast Place: A
- Fast Use: A
- Ground Spoof: A, B, C
- Hacked Client: A
- Improbable: A, B, C, D
- Invalid: A, B, C, D, E, F
- Inventory: A, B
- Ping Spoof: A, B, C
- Scaffold: A, B, C, D, E, F, G, H, I, J, K, L
- Timer: A, B
- Tower: A


Installation
Download Vulcan and PacketEvents. (Latest PacketEvents builds for newest Minecraft versions: https://ci.codemc.io/job/retrooper/job/packetevents/)
Place them into your plugins folder.
Restart the server.
Profit.

Vulcan is not compatible with /reload or PlugMan (/plugman reload | /plugman load) - these will cause errors. Please restart the server, or use the /vulcan reload command.

Any check marked with a * in game is EXPERIMENTAL, meaning you SHOULD NOT PUNISH FOR THEM. They are not yet fully stable and still in development

Every server is different, and some may require different configurations. Vulcan is made in a way that allows you to modify the sensitivity and values for almost every single check - please make use of this for your server.

For example, if you're running a KitPvP server, you can probably disable the Fast Break and Baritone checks, as they aren't necessary at all in that game mode. Gamemodes that run for a shorter duration of time such as SkyWars or Bedwars may benefit from lowering the max-violations for some checks in order to punish players more quickly.





Commands and Permissions

Vulcan has a large array of commands that make identifying and removing cheaters from your server easier.

/alerts | vulcan.alerts | Toggles on and off Vulcan's alerts.

/jday add (player) | vulcan.jday | Adds a player to Judgement Day.
/jday execute | vulcan.jday | Executes Judgement Day.

/logs (player) (page) | vulcan.logs | Read a player's logs from the violations file.
/punishlogs (player) | vulcan.punishlogs | Check a player's punishment from the punishments.txt file

/vulcan help | vulcan.help | Shows Vulcan's help command.
/vulcan reload | vulcan.reload | Reloads Vulcan's configuration file.
/vulcan disablecheck (checkname) | vulcan.disablecheck | Disable a check from running
/vulcan freeze (player) | vulcan.freeze | Freeze a player, making them unallowed to move.
/vulcan ban (player) | vulcan.ban | Bans a player through Vulcan.
/vulcan violations (player) | vulcan.violations | See all violations flagged by a player.
/vulcan cps (player) | vulcan.cps | Display a player's CPS.
/vulcan knockback (player) - /vulcan kb (player) | vulcan.knockback - vulcan.kb (player) | Test a player for anti-knockback
/vulcan reset | vulcan.reset | Reset violations of all online players.
/vulcan clickalert (player) | vulcan.clickalert | Custom lists of commands to be executed when clicking an alert message
/vulcan top | vulcan.top | Shows list of users with the highest violations

vulcan.bypass.(checkname) - bypasses the specific check
vulcan.bypass.* - bypass all checks

/vulcan connection (player) | vulcan.connection | Shows connection information related to a player.


/vulcan profile (player) | vulcan.profile | Show's a players Vulcan profile, including sensitivity, and other useful information.



PlaceholderAPI Placeholders

%vulcan_client_brand% - Display the user's client brand
%vulcan_total_violations% - Display the user's total violations
%vulcan_combat_violations% - Display the user's combat violations
%vulcan_movement_violations% - Display the user's movement violations
%vulcan_player_violations% - Display the user's player violations
%vulcan_total_punishments% - Display the total punishments executed by Vulcan