AdvancedSensitiveWords

AdvancedSensitiveWords is a Paper moderation plugin built around DFA word matching, event-based content inspection, modular violation levels, and optional LLM-assisted chat review.

2.x is a breaking release. It targets Paper only, uses Gradle with Kotlin DSL, and generates a new kebab-case configuration model. Do not reuse pre-2.0 configuration files without reviewing every setting.

Requirements

Component	Requirement
Server	Paper 1.21.11
Java	Java 21
Proxy (optional)	Velocity with the matching Velocity jar
Optional integrations	TrChat, PacketEvents, PlaceholderAPI, floodgate, AuthMe

Spigot, CraftBukkit, and BungeeCord are not supported since version 2.x.

Installation

1. Download the Paper artifact from the release, or build paper:shadowJar locally.
2. Put the Paper jar in the server plugins/ directory and start Paper once.
3. Configure plugins/AdvancedSensitiveWords/config.yml and the generated messages_en.yml or messages_zhcn.yml.
4. Run /asw reload all after changing dictionaries or /asw reload config after changing only configuration.

For Velocity notifications and proxy commands, install the Velocity artifact on the proxy, set plugin.hook-velocity: true on Paper, then restart both sides. The proxy module does not filter chat by itself.

What 2.x Filters

• Chat and commands: Paper AsyncChatEvent, command preprocessing, cross-message chat context, configurable replacement or cancellation, fake messages on cancellation, and TrChat fake-message/shadowban compatibility.
• Books: event-based writable-book checking, optional cross-page checking in cancel mode, and a bounded cache for processed book content.
• Signs: per-line, multi-line, and recent-sign context checking. In cancel mode, optional PacketEvents fake view can show the author their attempted text while other players retain the real, clean sign view.
• Anvils and items: rename-result filtering plus item display-name and lore filtering using Adventure components.
• Player names and broadcasts: login rejection for blocked names and optional broadcast filtering.
• Optional LLM chat review: asynchronous, cost-gated review for messages that did not match DFA or chat context. It is disabled by default and never retracts chat; it can notify, record, increment the separate AI VL, and run configured actions after a validated response.

Quick Configuration

Configuration is generated in lower kebab-case. The generated file is the authoritative list of defaults and inline comments.

plugin:
  language: en
  enable-chat-check: true
  enable-sign-edit-check: true

chat:
  method: CANCEL # REPLACE or CANCEL
  fake-message-on-cancel: false
  context-check: true

REPLACE changes matched text with the configured replacement. CANCEL rejects the affected interaction. Fake chat messages and sign fake view are cancellation-only features.

Command Argument Rules

chat.command-white-list also defines which command arguments are inspected. With the default invert-command-white-list: true, listed command paths are inspected and commands outside the list are skipped.

chat:
  invert-command-white-list: true
  command-white-list:
    - "[default:include] /msg [ignore:1]"
    - "[default:include] /bc [ignore:1,-1]"
    - "[default:ignore] /mail send [include:2..]"

Arguments are numbered after the command path, starting at 1. -1 is the final argument; 2.. means the second argument through the end. include and ignore directives are processed in order. Ignored arguments split detection segments, so a blocked word cannot match across a skipped player name, server name, count, or other parameter.

Punishments and Violation Levels

Each filter module has its own punishment list and its own VL: CHAT, AI, BOOK, SIGN, ANVIL, and ITEM. Commands share the CHAT VL. The manual default list at plugin.manual-punishment is the exception: its VL conditions use the total across modules.

chat:
  punishment:
    - "COMMAND|kick %player% Blocked content|VL>2"
    - "SHADOW|60|VL>5"

Supported action types are COMMAND, COMMAND_PROXY, DAMAGE, HOSTILE, EFFECT, and SHADOW. Use %player% or %PLAYER% in command actions. Empty lists keep detection, logging, notification, and VL counting active while disabling automatic actions.

Optional LLM Moderation

Enable LLM review only after configuring a compatible provider and API key. Paper loads LangChain4j libraries through plugin.yml, so the server needs network access or an existing Paper library cache during the first startup.

ai:
  enabled: true
  base-url: https://api.deepseek.com
  api-mode: CHAT_COMPLETIONS # CHAT_COMPLETIONS, RESPONSES, or ANTHROPIC_MESSAGES
  api-key-environment: DEEPSEEK_API_KEY
  model-name: deepseek-v4-flash

Before a request, ASW requires that direct DFA and chat-context checks miss, then applies message-length, entropy, per-player cooldown, in-flight, concurrency, and queue limits. LLM output is strictly parsed locally before any follow-up action.

Each category has independent notification and punishment confidence thresholds and actions under ai.category-policy. LLM requests and responses are audited in plugins/AdvancedSensitiveWords/llm-history/. Treat this directory as sensitive operational data.

ai.server-context-can-override is a server-owner policy switch. When enabled, ai.server-context is inserted into the trusted system policy and is intentionally omitted from the user JSON payload. Keep policy text administrator-controlled; never place player input, credentials, or private data there.

Commands

Command	Purpose
/asw help [query]	Show command help.
/asw status	Show general plugin status.
/asw ai status	Show LLM runtime counters, queue state, model, API mode, and category policies.
/asw reload [all|config]	Reload configuration, or configuration plus dictionaries.
/asw test <text...>	Test text against the DFA filter.
/asw word add/remove <word> [word...]	Mutate the blocked-word list for the current runtime only.
/asw allow add/remove <word> [word...]	Mutate the allowed-word list for the current runtime only.
/asw player info <online-player>	Show per-module and total VL.
/asw player reset <online-player> [module]	Reset all or one module VL.
/asw player punish <online-player> [method...]	Execute configured manual punishment or one supplied action.
/asw teleport <world-id> <x> <y> <z>	Teleport a staff member to a reported location.

/asw and /advancedsensitivewords are equivalent. Runtime word-list mutations are discarded on a full dictionary reload or server restart.

Permissions

Permission	Default	Purpose
advancedsensitivewords.bypass	false	Bypass filtering.
advancedsensitivewords.notice	op	Receive staff notifications.
advancedsensitivewords.update	op	Receive update notices.
advancedsensitivewords.command.*	false	Parent node for all management commands.
advancedsensitivewords.command.help	op	Use help.
advancedsensitivewords.command.status	op	Use general status.
advancedsensitivewords.command.ai.status	op	Use AI status.
advancedsensitivewords.command.reload.all	op	Reload configuration and dictionaries.
advancedsensitivewords.command.reload.config	op	Reload configuration only.
advancedsensitivewords.command.test	op	Use DFA test.
advancedsensitivewords.command.word.add	op	Add blocked words at runtime.
advancedsensitivewords.command.word.remove	op	Remove blocked words at runtime.
advancedsensitivewords.command.allow.add	op	Add allowed words at runtime.
advancedsensitivewords.command.allow.remove	op	Remove allowed words at runtime.
advancedsensitivewords.command.player.info	op	Inspect player VL.
advancedsensitivewords.command.player.reset	op	Reset player VL.
advancedsensitivewords.command.player.punish	op	Apply manual punishment.

Integrations and API

• TrChat: compatibility for fake chat messages and shadowban display. TrChat remains responsible for its own formatting pipeline.
• PacketEvents: optional and soft-required only for sign fake view. Without it, sign cancel behavior remains active without a fake view.
• PlaceholderAPI: enable plugin.enable-placeholder to expose %asw_version%, %asw_total_filtered%, %asw_is_shadow%, and %asw_violation_count%.
• Floodgate / AuthMe: optional Bedrock-name and authentication-state handling.

Other Paper plugins can access the shadowban API without depending on implementation classes:

import io.wdsj.asw.bukkit.api.AdvancedSensitiveWordsApi;
import java.time.Duration;

AdvancedSensitiveWordsApi.shadowBan().shadow(player, Duration.ofMinutes(5));

AsyncModerationResponseEvent is fired asynchronously after an LLM response. Event handlers may observe, cancel ASW follow-up, or replace the validated result, but must schedule Bukkit entity/world work themselves.

Building From Source

.\gradlew.bat --no-daemon build

License

AdvancedSensitiveWords is licensed under the GNU AGPL-3.0.

Links

• Online word list
• bStats