Detect and fight the exploitation of various flaws/bugs in Minecraft!

Features Permissions Commands Configuration Jenkins


NoCheatPlus attempts to prevent cheat clients from exploiting weaknesses of Minecraft or its protocol, making your server more safe. Checks cover a wide range of issues including flying and speeding, fighting hacks, fast block breaking and nukers, inventory hacks, chat spam and other types of malicious behaviour. For a more complete list have a look at the Features Page.

NoCheatPlus puts emphasis on configurability and allows you to customize actions that are carried out when a player fails a check (e.g. silent cancelling, executing commands, just logging). Bypass permissions allow to control what check to apply for which players, all checks can be deactivated in the configuration, also having the option for world-specific configuration files. Many checks allow more detailed configuration to adjust sensitivity.

Certainly NoCheatPlus is not a magical bullet, it uses a lot of heuristics and even guessing, so you will encounter false positives here and there and also not catch every single violation. Example video of how NoCheatPlus blocks cheats (outdated plugin version).

NoCheatPlus was introduced by NeatMonster, building on the code base of NoCheat by Evenprime.

The following plugins might be useful to have a look at.

CompatNoCheatPlus (cncp)

Make plugins like mcMMO, Citizens, MagicSpells or MachinaCraft more compatbile with NoCheatPlus. Not all existing plugins are covered (yet), but you can leave a note or ticket request for cncp.


Orebfuscator fights all sorts of X-ray-hacks by altering the map information that is sent to the players, such that they have to mine blocks to actually reveal what is behind. Virtually a "must have".

Downloads and History of Changes

  • Download officially approved versions on the Files page at BukkitDev.
  • Development builds have been moved over to the Jenkins at EcoCityCraft.
  • Do not download from any other source, do not use jars other people send you.
  • Changes by build number can be examined in the Jenkins changes list.
  • All commits can be seen in the GitHub commit history.
  • Plugin statistics are no longer reported to


Documentation Resources

Contact us

  • Quick questions can be asked on this page,
    or on IRC (Server: | Default-Port: 6667 | SSL-Port: 6697 | Channel: #nocheat | Web client: WebIRC)
  • For real issues or feature requests please create a new ticket or add to an existing ticket.
  • To send information that is not to be seen by all, you can also reach us by PM to @asofold and @MyPictures. Please do not contact the user 'NoCheatPlus', it is for administrative purposes only and will likely not be answered in time. Keep to BukkitDev and GitHub for support, do not trust users on other forums or websites, also not if their nick names are the same as NCP staff on BukkitDev.

Please always state the output of the "ncp version" command to let us know versions in use (users of cncp also the "cncp" command).

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  • Avatar of Liger_XT5 Liger_XT5 Oct 30, 2012 at 18:43 UTC - 0 likes

    Note: I haven't updated to MC 1.4 due to CB and Spout.

    We recently installed Sign Bank, , and started noticing players are warned about chat spam when they type in the amount they want to withdraw, deposit, or transfer.

    MCDen @
    Details at!

  • Avatar of asofold asofold Oct 30, 2012 at 10:01 UTC - 0 likes

    @euQsei: Go

    Did you read the 1.4 note or any other of the messages here?

    Get it here:


    Latest beta release (+ 1.8.3, approved) NoCheatPlus 3.12.0-RC-sASO-b813
    (Development builds, 1.8: Jenkins)

  • Avatar of euQsei euQsei Oct 30, 2012 at 09:35 UTC - 0 likes

    ERROR IN 1.4.2

    2012-10-30 05:33:46 [SEVERE] Could not pass event PlayerMoveEvent to NoCheatPlus v3.7.9-RC-b191 org.bukkit.event.EventException at$1.execute( at org.bukkit.plugin.RegisteredListener.callEvent( at org.bukkit.plugin.SimplePluginManager.fireEvent( at org.bukkit.plugin.SimplePluginManager.callEvent( at net.minecraft.server.NetServerHandler.a( at net.minecraft.server.Packet10Flying.handle(SourceFile:136) at net.minecraft.server.NetworkManager.b( at net.minecraft.server.NetServerHandler.d( at net.minecraft.server.ServerConnection.b(SourceFile:35) at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30) at net.minecraft.server.MinecraftServer.r( at net.minecraft.server.DedicatedServer.r( at net.minecraft.server.MinecraftServer.q( at


  • Avatar of asofold asofold Oct 30, 2012 at 00:53 UTC - 0 likes

    @uplusion23: Go

    Did you read the 1.4 note or any other of the messages here?

    Get it here:

  • Avatar of uplusion23 uplusion23 Oct 30, 2012 at 00:30 UTC - 0 likes

    @asofold: Go

    I updated to the most recent build, But I get tons of 'could not pass player move event' errors. About 5 a second. Is it only me?

  • Avatar of asofold asofold Oct 29, 2012 at 19:18 UTC - 0 likes

    @FuRiouSOne: Go

    As MyPictures said, in principle it is impossible.

    It is not completely impossible, because all clients usually use some patterns for their cheats, but once you do this the clients will update and change their pattern. Still i think focusing on the cheats rather than trying to detect what client people use is far more rewarding for an open source plugin.

    @navbarry: Go

    Thank you for updating.

  • Avatar of navbarry navbarry Oct 29, 2012 at 18:37 UTC - 0 likes

    When players on my server are sprinting and jump nocheatplus teleports them back. It tells all the ops that the player is survival flying. Edit: Build 196 works, so far the issue has not occurred.

    Last edited Oct 29, 2012 by navbarry

  • Avatar of MyPictures MyPictures Oct 29, 2012 at 18:06 UTC - 0 likes

    @Jns20: Go

    Emm if you use CB for 1.4.2 then 191 will be broken with it. Update to the latest version:

    If you still get problems make a ticket with all info's we need.

    @FuRiouSOne: Go

    Emm no Punkbuster isn't for Minecraft ;P. The problem is that the MC server (in this case Craftbukkit) doesn't know anything about the client and it also cant check if the client is modded or not. For such stuff you would have to ask Mojang but over a bukkit plugin its impossible to make.

    Last edited Oct 29, 2012 by MyPictures


  • Avatar of FuRiouSOne FuRiouSOne Oct 29, 2012 at 18:04 UTC - 0 likes

    Would be really nice is someone could just come up with a way to detect if a client is using nodus or any other hack mod and not allow them to join the server. Punkbuster anyone?

    Last edited Oct 29, 2012 by FuRiouSOne



  • Avatar of Jns20 Jns20 Oct 29, 2012 at 17:33 UTC - 0 likes

    I was having some issues with players sprinting and jumping and being teleported back to where they were (caused by survivalyfly, which I have disabled and working fine. I just hope people don't start flying around Q_q)

    I am still getting spam in the console of some nocheatplus.utilities.BlockProperties or something along those lines.

    You can view it there

    Help would be much appreciated.

    Last edited Oct 29, 2012 by Jns20


Date created
Apr 02, 2012
Last update
Mar 21, 2015
Development stage
GNU General Public License version 3 (GPLv3)
Curse link
Recent files