This project is abandoned and its default file will likely not work with the most recent version of Minecraft. Whether this project is out of date or its author has marked it as abandoned, this project is no longer maintained.


PowerNBT moved to spigotmc.org

Powerful NBT editor for CraftBukkit 1.5 and later.
Simple NBT API (for developers).
Works with CraftBukkit, MCPC+, Cauldron, Spigot (fix to forge 1.4.7)

PowerNBT 0.5


  • Browsing and editing NBT tags
  • supports items, players, offline-players, entities, blocks, chunks, schematic files and all other nbt files
  • save tags to file
  • spawn entity with custom nbt tags
  • parse mojangson string
  • custom colors and unicode symbols
  • supports tab-completion
  • supports operations copy/paste/cut/swap
  • supports variables

All commands

See: commands


  • /nbt me Inventory remove - clear inventory
  • /nbt me Inventory = *Bob EnderItems - get Bob's enderchest to yourself
  • /nbt @Eve remove - remove file Eve.dat (offline player)
  • /nbt block ExtraType = "Notch" - set skull owner
  • /nbt * Health = 1000 - set 1000 health to mob, which you select
  • /nbt item ench copy - copy item enchantments to buffer
  • /nbt item ench paste - paste enchantments to other item


  • powernbt.use



Version 0.8.2 beta

  • added: binary opetarions: ^= , &= , |= , useful to set binary flags
  • added: operation: multiplication: *=
  • added: operation: spawn entity
  • added: value: numbers in binary format
  • added: values in mojangson format
  • added: object: hand
  • added: object: schematic
  • added: view mode: binary
  • added: silent mode for command
  • added: API: read chunk
  • added: API: save chunk
  • added: API: parse mojangson string
  • added: API: spawn entity
  • fixed: support cauldron 1.7.10
  • bug: invisible players after change chunk data.
  • bug: on update blocks after change chunk. cauldron 1.7.10

Version 0.8.1

  • added: read/write chunks


  • fix: work with Cauldron 1.7.2



See API for documentation and examples
Maven dependency (since 0.7.2)
API for version 0.7.2 and later


If you add a tag, which is not expected by the client, it may be crashed. Be careful!

Helpful links, about NBT format:



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