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

Main 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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 jdcvanderwal jdcvanderwal Oct 07, 2012 at 18:09 UTC - 0 likes

    The latest nocheatplus gives on my clean server a error and dont work fix it fast everybody can cheat


    20:18:10 [INFO] [NoCheatPlus] Enabling NoCheatPlus v3.5.1 20:18:10 [SEVERE] Error occurred while enabling NoCheatPlus v3.5.1 (Is it up to date?) java.lang.VerifyError: (class: me/neatmonster/nocheatplus/checks/chat/ChatCheckL istener, method: commandPreprocess signature: (Lorg/bukkit/event/player/PlayerCo mmandPreprocessEvent;)V) Incompatible argument to function at me.neatmonster.nocheatplus.NoCheatPlus.onEnable(

    at at .java:374) at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManage at org.bukkit.craftbukkit.CraftServer.loadPlugin( at org.bukkit.craftbukkit.CraftServer.enablePlugins( ) at net.minecraft.server.MinecraftServer.i( at net.minecraft.server.MinecraftServer.d( at net.minecraft.server.MinecraftServer.a( at net.minecraft.server.DedicatedServer.init( at at

    By every version of NoCheatPlus! Also by the lastest version!

    Last edited Oct 07, 2012 by jdcvanderwal
  • Avatar of asofold asofold Oct 07, 2012 at 15:38 UTC - 0 likes

    @ha11oga11o: Go

    The default configuration does contain some kick actions.

    I am not sure if the "vl>X'" can already be used independently of log actions, so i add that for reference.

    Assume you want to kick players for survivalfly (careful with too low levels, there are false positives now and then).

    you change the survivalfly actions to something like:

      # ...
        # ...
          # ...
          actions: cancel vl>600 log:flylong:0:0:f cancel cmd:kicksf

    Now that would just cancel for low vls and from 600 on will make a log entry to the log file, cancel the action and execute a command that you have to enter into the strings section by the key "kicksf".

    How exactly to kick is another question. If kicking conflicts with the position resetting one would need to use the delayed version of the command ("ncp delay ... "). Normally a kick action would look like:

      # ...
      kicksf: "ncp kick [player] Kicked for flying. If this is an error, contact staff."


    Latest release (1.7.2-1.7.10, approved) NoCheatPlus 3.11.1-RC-sMD5NET-b743
    (Development builds: Jenkins)

  • Avatar of ha11oga11o ha11oga11o Oct 07, 2012 at 13:49 UTC - 0 likes


    can someone please share config with some cmd:xxx in it. I really cannot figured it out how to set it up properly. All actions are as cancel and that lgging server like hell. Need some kicking in it.

    Apparently im n00b but im truing to understand things. I need to kick players who are flying and to add some others commands to heavy cheats, but dont know how.

    many thnx in advance :)

  • Avatar of asofold asofold Oct 06, 2012 at 20:26 UTC - 1 like

    @Aangiix3: Go

    That's what the blockplace.speed check is for. I have not yet inspected it myself, but it was tested by MyPictures. You might adjust the interval setting (milliseconds) to something higher, forcing longer delays. Currently it allows one violation to pass, though, then will stop the next. I might change it to another method keeping track of throwing frequency covering 2 periods of time ("normal" + "short term").

    In addition to the throwing interval also the "improbable" check is applied to throwing potions.

  • Avatar of Aangiix3 Aangiix3 Oct 06, 2012 at 20:13 UTC - 1 like

    @asofold: Go

    It's about Potions. With "FastPlace" you can throw Potions, XP-Bottles etc. really fast. Please block this.

  • Avatar of xSkivy xSkivy Oct 06, 2012 at 19:17 UTC - 0 likes

    @asofold: Go

    Ok, I used the latest version, and now everything is working! Thanks.

  • Avatar of asofold asofold Oct 06, 2012 at 18:36 UTC - 1 like

    @xSkivy: Go

    The newest oneshould be preferable at this point of time.

    I am not sure wihich version iof NCP you are running. Check the startup-log if NCP enables at all...

  • Avatar of xSkivy xSkivy Oct 06, 2012 at 18:27 UTC - 0 likes

    @asofold: Go

    I am not sure what my permission plugin does with OPs, I use PermissionsEx. In my permissions file, the rank I am has the permission "nocheatplus.admin". Should I try the new build?

    Last edited Oct 06, 2012 by xSkivy: I a word.
  • Avatar of asofold asofold Oct 06, 2012 at 18:24 UTC - 1 like

    @xSkivy: Go

    Build 138 might be a reference:

    You have really downloaded a version for 1.3.1/1.3.2 on not NCP 3.6.1 by accident ?

    Also what does your permission plugin do with ops?

  • Avatar of xSkivy xSkivy Oct 06, 2012 at 18:17 UTC - 0 likes

    I am using the newest version, and I am not receiving notifications when players trip NoCheat. I have enabled it in the config, but it still seems not to work. I am op and have the notification permission.


Date created
Apr 02, 2012
Last update
Sep 21, 2014
Development stage
GNU General Public License version 3 (GPLv3)
Curse link
Recent files