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

Features Permissions Commands Configuration Jenkins

NOW! With Minecraft 1.10 support! (on Jenkins)

Quick overview: NCP by version of Minecraft
(Links may lead to downloads not approved by BukkitDev staff, use at your own risk.)
GitHub Issue for 1.10 progress (overview)


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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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.


Allows NoCheatPlus to activate packet-level checks, covering a range of exploits that can't be monitored using ordinary means. Since roughly Minecraft 1.7.10, the fight.speed check can't work as expected anymore, due to changes in CraftBukkit. With ProtocolLib this can be repaired.

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 create an issue/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". (Latest versions of Spigot contain features of Orebfuscator.)

Downloads and History of Changes


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 issue/ticket or add to an existing issue/ticket.
  • To send information that is not to be seen by all, you can also reach us by PM to @asofold and @MyPictures. @IceAP (IRC: ICE) will also help or redirect the conversation. 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 asofold asofold Oct 10, 2015 at 14:38 UTC - 0 likes

    @MinePuppeh: Go

    We will make a full release once the latest changes have stabilized and after putting fight checks on feet once more.

    Until then, for 1.8, you might keep to the latest "mostly stable" development build, unless you want to help testing with the latest ones.

    We might upload the "mostly stable" one(s) as alpha/beta, but not as "recommended".


    Latest beta release (1.8.x, this site) 3.13.0-BETA-sMD5NET-b878
    (Development builds, 1.8.x: Jenkins)

  • Avatar of MinePuppeh MinePuppeh Oct 08, 2015 at 21:47 UTC - 0 likes

    When do you plan to release a new recommended version? I hope you guys can crack down on exploits.

  • Avatar of asofold asofold Oct 07, 2015 at 21:43 UTC - 0 likes

    @ShawnPR1: Go

    For 1.8 .... are you using the latest "mostly stable" development build? The latest development build is rather for the brave right now, we hav to consolidate - certainly the latest version available on BukkitDev is long outdated, concerning 1.8.

    Best includ the output of the "ncp version" command as text, so we can rule out current specialties quickly.

  • Avatar of ShawnPR1 ShawnPR1 Oct 07, 2015 at 21:07 UTC - 0 likes

    Hi there...

    I've been getting some weird problems with this plugin recently. For starters, admins in creative mode cannot use sprint while flying. NCP detects it as flying too fast (in minecraft 1.8 and even lower I think you can press left ctrl while flying to speed up your flight). Secondly, my members cannot jump on a fence block from an adjacent block. If any member or even staffmember tries to jump onto a fence block from any adjacent block they get tp'ed back to the main block. They're simply trying to climb onto the fence but can't even do that.

    I do believe I have no conflicting plugins as none of my other plugins change flight speed or have anything to do with movement or such. Please just verify if these are valid bugs and please try and fix them if possible

  • Avatar of asofold asofold Oct 07, 2015 at 10:36 UTC - 0 likes

    @maol3: Go

    There is nothing you can do about slime blocks using build 743.

    You should rather use the latest "mostly stable" or "recommended" build on Jenkins, unless you want to support testing with using the absolutely latest development builds.

    Which builds did you have issues with? If it is the latest development build, it should be worth a ticket.

  • Avatar of maol3 maol3 Oct 06, 2015 at 19:58 UTC - 0 likes


    I'm having a problem with SurvivalFly, making the player getting teleported back to the Slime Block instead of bouncing on it, after landing on a Slime Block after falling from a high distance.

    I'm running NCP 3.11.1-RC-sMD5NET-b743. I am not running the lastest version because this problem is not fixed and even another issue related to "low to roof-jumps" is induced in that version. (If you try to sprint and jump where the height of the air is 2.5 blocks, you will be teleported down)

    Is there any solution to this? Thanks in advance.

    Last edited Oct 06, 2015 by maol3
  • Avatar of asofold asofold Oct 03, 2015 at 12:25 UTC - 0 likes

    @tcarey2015: Go

    You can temporarily turn it off with "/ncp notify off", or permanently and globally by disabling the logging.backend.ingamechat, setting active to false there.

    Alternatively you could also remove/alter log actions for individual checks, where you would have control over the violation levels to log for. That only works on a per-check basis.

  • Avatar of tcarey2015 tcarey2015 Oct 02, 2015 at 20:15 UTC - 0 likes

    How do i remove the chat spam NPC: Player blah blah has failed blah blah

  • Avatar of MyPictures MyPictures Sep 28, 2015 at 19:25 UTC - 1 like

    @maol3: Go

    Please provide your NoCheatPlus and server version, in most cases this happens if you use an outdated NC+ version which does not include the new block data. I recommend trying out the latest build on Jenkins.


  • Avatar of maol3 maol3 Sep 28, 2015 at 14:43 UTC - 0 likes

    Hi authors,

    The SurvivalFly-check is teleporting players back while they walk or jump next to fence and cobblestone wall, preventing some parkour jumps to be undoable (a solid block with fence in the middle). Are you aware of this bug, or is there a fix for it? Disabling SurvivalFly is not really an option since it will allow fly hacking on a parkour server.

    Thanks in advance!

    Last edited Sep 28, 2015 by maol3


Date created
Apr 02, 2012
Last update
Jan 31, 2016
Development stage
GNU General Public License version 3 (GPLv3)
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