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 Example video of how NoCheatPlus blocks cheats (outdated plugin version).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

You must login to post a comment. Don't have an account? Register to get one!

  • Avatar of asofold asofold Oct 21, 2015 at 11:50 UTC - 0 likes

    @groovybluedog: Go

    Which version of NCP have you been testing? Which server/Minecraft version with?


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

  • Avatar of groovybluedog groovybluedog Oct 21, 2015 at 07:00 UTC - 0 likes

    Hey, seems excellent, and it is stopping my tests, but no in-game chat messages are being generated.

    They are being written to the log. Not the console. I used the command to turn notifications on and also checked the configuration... but no updates are being written to in-game chat, regardless of the op settings of either the admin or the violating player. I also tried deleting/regenerating configuration and removing all other plugins; restarting between every change.

    Last edited Oct 21, 2015 by groovybluedog: Missing info
  • Avatar of asofold asofold Oct 21, 2015 at 01:25 UTC - 0 likes

    @bigscary: Go

    Thank you for the feedback.

    Concerning the water, that should be a ticket, i assume that the issue persists on the latest builds for most. I'll try to reproduce...

    The config part is a bit difficult, the complaint is generated only if we change an existing value, of course it doesn't really justify resetting the whole config. For one way to deal with it, see the answer by @Bobcat00. In fact this is somewhat queued already, but it's not of high priority, compared to stabilizing moving checks and reinstating/improving fight checks. We have been thinking about either marking config changes per-path, thus logging exactly what changed, or at least allowing to show the differences to the default configuration via a commands somehow.

    @nsptg95: Go

    CompatNoCheatPlus is EXTRA to NCP. It might detect NPCs (note NPC vs. NCP :p), and it might exempt them from checks in order to decrease server load. This could help a little bit.

    I'd need to inspect the timings when i have time (...), at first glance it looks like those have been taken over a very short duration of time - do you have timings covering a little longer period of time, or say something like 200000 - 2000000 moving events?

    @Bobcat00: Go

    That's probably the best you can do at present :).

    Last edited Oct 21, 2015 by asofold
  • Avatar of Bobcat00 Bobcat00 Oct 20, 2015 at 22:23 UTC - 0 likes

    @bigscary: Go

    I shut down the server, rename the config, update NCP, restart the server, then use Notepad+ +'s compare files feature to check and update the new config file.

    Last edited Oct 20, 2015 by Bobcat00

    Server: - Survival/PVP, 7 Mob Arenas, Creative World
    Web site:

  • Avatar of nsptg95 nsptg95 Oct 20, 2015 at 21:29 UTC - 0 likes

    @asofold: Go


    no, i dont try use compactNoCheatPlus, but this anti cheat is equals ncp?

    see timings see timings in log:

    ZBDH1517c7fcc3fa2fbb5b1c7ed28e571e64 MeuServer

  • Avatar of bigscary bigscary Oct 20, 2015 at 21:20 UTC - 0 likes

    Bug Report on version When players throw an ender pearl and it hits the side of a block under water, they get kicked and then every time they log back in, they're instantly kicked again. This requires me to give them the bypass permission to get them out. I'm betting I've lost lots of players due to this, because not being able to log into the game makes it difficult to contact an admin. And even if you do, you still have to wait for an admin to act. For me anyway, it's too expensive to keep around - so I've turned off the passable check (the logs explained that was the reason for the boots).

    Feature request - Please stop insisting we reset our config files every time we update. Your config file is super-complicated, and meticulously noting the customizations and then re-applying them to a new config file after every update is frustrating - so much so that for me, I just ignore the log in message reminding me to regenerate the file. Even though I see it every time I log in (and have for months now), it's still less troublesome than trying to re-customize a config file.

    Thanks for the great plugin! As much as I complain about disappointments, I wouldn't trust anything else. I know it must be very difficult to balance efficacy versus false positives, especially with the moving target created by client mod developers.

    Last edited Oct 20, 2015 by bigscary


  • Avatar of asofold asofold Oct 20, 2015 at 07:45 UTC - 0 likes

    @nsptg95: Go

    You already turned logging off, that's something. Without seeing the absolute timings or the relation to the server tick, i can't say much.

    Have you ever tried CompatNoCheatPlus with Citizens?

  • Avatar of nsptg95 nsptg95 Oct 18, 2015 at 13:29 UTC - 0 likes

    @asofold: Go

    version 1.7.2 - 1.7.5

  • Avatar of asofold asofold Oct 18, 2015 at 00:30 UTC - 0 likes

    @nsptg95: Go

    What was your server /version?

  • Avatar of nsptg95 nsptg95 Oct 17, 2015 at 14:14 UTC - 0 likes

    @asofold: Go

    humm thanks, i go send my ncp config:

    maybe how you recomend i do?

    thanks :b

    Last edited Oct 17, 2015 by nsptg95


Date created
Apr 02, 2012
Last update
Jan 31, 2016
Development stage
GNU General Public License version 3 (GPLv3)
Curse link
Reverse relationships
Recent files



Optional dependency