API Packages

Papyrus ships the Paper API from the papyrus-api module. The public surface matches Paper — browse the full reference on jd.papermc.io.

org.bukkit

Core Bukkit API inherited from Spigot/CraftBukkit.

Area	Examples
Server	Bukkit.getServer(), Server
Worlds	World, Chunk, Location
Entities	Entity, Player, LivingEntity
Blocks	Block, BlockState, Material
Events	Listener, Event, EventHandler
Commands	Command, CommandExecutor, PluginCommand
Inventory	Inventory, ItemStack, ItemMeta

org.bukkit.plugin

Plugin lifecycle and registration.

• JavaPlugin — base class for Bukkit plugins
• PluginManager — load, enable, disable plugins
• ServicesManager — service registration and lookup
• PluginLoader — class loading

io.papermc.paper

Modern Paper API additions.

Area	Package / types
Registry	io.papermc.paper.registry.RegistryKey, generated *Keys classes
Data components	io.papermc.paper.datacomponent
Dialogs	io.papermc.paper.dialog
Configuration	io.papermc.paper.configuration
Server build info	io.papermc.paper.ServerBuildInfo
Plugins	io.papermc.paper.plugin (Paper plugin bootstrap)
Events	io.papermc.paper.event

com.destroystokyo.paper

Legacy Paper-specific extensions.

• ParticleBuilder, Title, SkinParts
• Entity AI: VanillaGoal
• Block utilities: TargetBlockInfo, BlockSoundGroup
• Brigadier: BukkitBrigadierCommand

co.aikar.timings

Timing and profiling (Timings v2).

• Timings, TimingHandler, TimingsManager
• Used internally; plugin authors rarely need direct access

Generated registry keys

The papyrus-api/src/generated/java/io/papermc/paper/registry/keys/ directory contains typed registry key constants (BlockTypeKeys, ItemTypeKeys, EnchantmentKeys, etc.) generated from Minecraft data.

Source layout

papyrus-api/
├── src/main/java/       Hand-written API
├── src/generated/java/  Generated registry keys and enums
└── build.gradle.kts     Published as paper-api

See Project Structure for the full repository layout.