Paper / Spigot API-AI tool for Paper/Spigot plugin development

Example

Implement a Listener and use @EventHandler to react to PlayerJoinEvent, BlockBreakEvent, EntityDamageEvent, etc.; register the listener in onEnable().

Scenario

Minigame plugin: when a player joins an arena (PlayerJoinEvent) you give them a kit, teleport them, and cancel fall-damage inside the arena by intercepting EntityDamageEvent. The event system is the natural place for gameplay rules because it receives fine-grained notifications from the server. cite

Example

Define commands in plugin.yml and implement CommandExecutor#onCommand to parse arguments and return tab completions via TabExecutor.

Scenario

Server admin tools: implement /warp, /sethome, /teleport, and permission-checked admin commands. Commands are used for user-driven actions and are the standard way players interact with server functionality outside GUIs. cite

Example

Use Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> { /* DB or network work */ }); then runTask(plugin, () -> { /* apply results on main thread */ });

Scenario

Database saving: write player stats to a MySQL/Postgres DB off the main thread; when the save completes, schedule a small sync task to update in-memory cache or inform the player. Avoid blocking the server thread — use the scheduler. cite

Example

On Paper you can request chunks asynchronously with World#getChunkAtAsync(...) and work with CompletableFuture callbacks, reducing main-thread stalls when preloading or generating terrain.

Scenario

Teleport manager / RTP: pre-load or generate target chunks asynchronously, then switch to the main thread to teleport the player once chunk generation completes — reduces hitching and keeps the main tick loop smooth. This is a Paper-specific advantage for performance-sensitive plugins. 

Example

Spawn entities, change metadata, modify block states and inventory contents using the provided object model (Entity, Block, ItemStack, Inventory, etc.).

Scenario

Custom mobs & shops: implement NPC vendors by spawning entities, managing custom inventories and hooking click events; control loot and drops for custom gameplay systems.

Example

Attach plugin data to ItemStack or Entity via PersistentDataContainer.set(namespacedKey, type, value) and read it back later.

Scenario

Custom items: mark items with a namespaced key to store durability, custom IDs, or owner info in a way that persists with the item and avoids collisions with other plugins. This is preferred to brittle tag schemes. 

Example

Register a service provider (ServicesManager) or use plugin channels (Messenger) to communicate with proxies or other plugins.

Scenario

Cross-plugin APIs: a permissions plugin exposes a 'PermissionsService' via ServicesManager so other plugins request permissions without hard dependency. Plugin messaging channels (BungeeCord, custom channels) let servers and proxies exchange lightweight data. 

Example

Use JavaPlugin#getConfig() to read/write plugin settings and saveResource to copy defaults from the jar; use YAML for human-editable settings.

Scenario

Server settings: admins tune spawn rates, economy multipliers, and feature toggles in config files; the plugin reads these values during onEnable and reacts accordingly. 

Example

Register custom crafting recipes, create scoreboard objectives and manage teams for PvP matchmaking.

Scenario

Competitive servers: use scoreboard objects to track player score and teams to control friendly fire, while custom recipes can introduce server-unique items.