Minecraft Protocol 26.2

Standalone protocol 776 implementation for Minecraft Java 26.2, maintained by Complexity-ML for GAME LAB.

Package	Runtime	Minecraft Java	Protocol
minecraft-protocol@1.66.2+complexity.26.2.3	Node.js 22+	26.2	776

Install

npm install "https://github.com/Complexity-ML/node-minecraft-protocol-26.2/releases/download/complexity-26.2.3/minecraft-protocol-complexity-26.2.3.tgz"

The release pins the standalone minecraft-data-26.2 package and does not depend on a deleted fork or Git submodule.

Offline client example

const mc = require('minecraft-protocol')

const client = mc.createClient({
  host: '127.0.0.1',
  port: 25565,
  username: 'GAME_LAB_Bot',
  auth: 'offline',
  version: '26.2'
})

client.once('login', () => console.log('Connected with protocol 776'))
client.on('error', console.error)

Use offline authentication only on a private server you own or are explicitly authorized to automate.

26.2 coverage

• protocol version 776;
• login sessionId and onlineMode changes;
• configuration and play packet mappings;
• world-clock updates;
• corrected 26.2 entity metadata serializers;
• corrected advancement icon item-stack templates;
• corrected 26.2 data-component registry IDs;
• client and server serialization;
• online and offline authentication paths.

The release was validated against the official Minecraft Java 26.2 server: login succeeded and 2,643 live packets were parsed with zero errors. The 26.2 server test suite contains 11 passing tests.

Documentation

• Full usage guide
• API reference
• Protocol notes
• Releases

Credits and license

Derived from PrismarineJS node-minecraft-protocol. The upstream history and contributor attribution are retained. Complexity-ML maintains this 26.2 distribution independently and is not affiliated with Mojang or Microsoft.

Licensed under the BSD 3-Clause License.