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Block entity data

Encode/decode this packet in Sandbox

Id: 56

Id (hex): 38

Id (bin): 00111000

Clientbound: ✔️

Serverbound: ✔️

Sets a block entity’s nbt tag, block’s additional data that cannot be indicated in the block’s meta. More informations about block entities and their tag format can be found on Minecraft Wiki. The client sends this packet when it writes a sign.

Fields

Name	Type
position	blockPosition
nbt	bytes

position

Position of the block that will be associated with tag.

nbt

Named binary tag of the block. The format varies from the classic format of Minecraft: Pocket Edition (which is like Minecraft’s but little endian) introducing the use of varints for some types:

• The tag Int is encoded as a signed varint instead of a simple signed 32-bits integer
• The length of the ByteArray and the IntArray is encoded as an unsigned varint instead of a 32-bits integer
• The length of the String tag and the named tag’s name length are encoded as an unisgned varint instead of a 16-bits integer