# dmulloy2/ProtocolLib

Provides read and write access to the Minecraft protocol with Bukkit.

Repository: https://github.com/dmulloy2/ProtocolLib
Canonical: https://ross.abutalabs.com/products/protocollib
Language: Java
License: GPL-2.0
License Family: copyleft
Topics: spigot, bukkit, packets, protocol
Last push: 2026-08-24T01:06:37+00:00

## Health v2 (maintenance only)
Score: 71/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 18, longevity 100
- inputs: {"age_days": 4309, "days_push": 10, "days_rel": 388, "gap_med": 146.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1317, forks 333 (observed 2026-08-28T04:04:21.005606+00:00)

## What it is
ProtocolLib is a Bukkit/Paper plugin and library that gives Minecraft server plugins read and write access to the Minecraft protocol. It provides an event-based packet listener API that abstracts away obfuscated Minecraft internals, letting plugins monitor, modify, cancel, or inject packets safely.

## Use cases
- intercept and modify packets sent between a Minecraft server and clients
- cancel incoming or outgoing packets to block or alter behavior
- inject custom packets into the server-client stream
- build plugins that need protocol-level access without touching CraftBukkit internals
- keep packet-handling plugins working across Minecraft version updates
- disable or replace client-side effects like sounds via packet filtering

## When to choose
- you are developing a Bukkit, Spigot, or Paper plugin that needs packet-level access
- you want a stable abstraction over obfuscated Minecraft protocol classes
- you need to avoid conflicts with other plugins hooking the same protocol classes
- you want an event-driven API for listening to packets similar to Bukkit's event system

## When to avoid
- your task can be accomplished with the standard Bukkit/Spigot API alone
- you are not developing a Minecraft server plugin
- you need a client-side mod rather than a server-side plugin
- you require a non-Java platform

## Facets
- artifact type: library
- maturity: active
- function: middleware, networking, developer-tools, plugin-system
- domain: gaming-tools, developer-tools
- platform: jvm
- tags: minecraft-protocol, bukkit, spigot, paper, packet-manipulation, packet-listener, minecraft

## Member repositories
- dmulloy2/ProtocolLib (main) score 71

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:21.005606+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:48:12.283205+00:00, confidence not recorded.
  - readme: https://github.com/dmulloy2/ProtocolLib (fetched 2026-08-28T04:04:21.005606+00:00, sha 3aba453231ce)
- Data as of 2026-08-30T08:39:29.467469+00:00.