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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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 Feb 21, 2014 at 23:13 UTC - 0 likes

    @StreetkillnHD: Go

    Just change the actions entry in checks.blockinteract.visible :

    Default: "cancel vl>5 log:bvisible:0:2:if cancel"

    Changed: "cancel"
    This will just silently cancel.

    Alternatives would be to increase the violation level by a lot by changing vl>5 to vl>500 or similar, or to increase the delay on the log action by a lot (advanced), so it does not spam.

    You can also turn off all ingame alerts in the logging section for a radical change.

    @sowerdb: Go

    What happens with tnt ?


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

  • Avatar of sowerdb sowerdb Feb 21, 2014 at 23:08 UTC - 0 likes

    @StreetkillnHD: Go

    It is a bug with the tnt that does the same thing to me


  • Avatar of StreetkillnHD StreetkillnHD Feb 21, 2014 at 22:45 UTC - 0 likes

    <<reply 2042323>>

    i dont want them alerts. to spam my chat .

    its been doing it alot.

    is there a way to turn just that alert off?

  • Avatar of asofold asofold Feb 21, 2014 at 22:20 UTC - 0 likes

    @StreetkillnHD: Go

    I can not recommend that - it would allow severe nuking.

    Why do you want to disable anything?

    Is there an actual issue, or do you just want to get rid of the ingame alerts?

  • Avatar of StreetkillnHD StreetkillnHD Feb 21, 2014 at 22:14 UTC - 0 likes

    <<reply 2041829>>

    so do i set these permission for default users.


    Last edited Feb 21, 2014 by StreetkillnHD
  • Avatar of asofold asofold Feb 21, 2014 at 21:42 UTC - 0 likes

    @Nikkolo94: Go

    Is that the info of the player who can not be hit for some time?

    It could be related to Ticket 705, but it could also be latency. To judge latency we would have needed the info of the attacking player who can't hit. If you can systematically reproduce it removing data of the involved players before testing (or all) could help.

    Usually with people moving that much i would suspect latency, also because the other player in the video is moving in an "optimized for checks" way, however the violations you show rather look like the moving players violations. If he had a clean sheet before that fight, it could indicate an issue as with ticket 705.

  • Avatar of MonarchServer MonarchServer Feb 21, 2014 at 21:37 UTC - 0 likes

    Thanks for update

  • Avatar of Nikkolo94 Nikkolo94 Feb 21, 2014 at 20:42 UTC - 0 likes

    <<reply 2041829>>

    BungeeCord: #846
    Spigot: 1312
    NCP+: 3.10.8-RC-sMD5NET-b664
    MCAccess: 1.7.2 / CB2922-DEV

    NCP: Displaying Ibbux97's violations...
    NCP: [17:34:41] moving.passable VL 24  (n24a1m1)
    NCP: [17:34:37] moving.survivalfly VL 1105  (n13a85m502)
    NCP: [17:33:18] fight.direction VL 2  (n2a1m1)
    NCP: [17:27:20] blockinteract.visible VL 2  (n2a1m1)
    NCP: [17:23:36] fight.critical VL 0  (n1a0m0)

    Sorry for my shitty english :P

  • Avatar of MyPictures MyPictures Feb 21, 2014 at 18:04 UTC - 0 likes

    @Nikkolo94: Go

    do /ncp info <AffectedPlayerName here> and post the output. We also need your NC+ and CB/Spigot version and if you use Bungee then also bungees version.

    @StreetkillnHD: Go

    nocheatplus.checks more infos here:


  • Avatar of Nikkolo94 Nikkolo94 Feb 21, 2014 at 17:29 UTC - 0 likes

    hey :)

    i would like to know if the bug appear on this video if maybe is caused by NCP, the player is unable to attack, and it happen a lot of time on my server


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