Trident AC

Beta. Anti-cheat and moderation toolkit for Forge 1.20.1 servers, built for heavily modded packs. Install it on the server and on every player’s client (a player without it cannot join).

Trident AC is a tool for staff: it records and shows you what players run and flags suspicious behaviour. It does not punish anyone automatically unless an admin switches that on.

What it does

Client mod inventory

• Every mod each player runs, with version and whether the file matches an unmodified Modrinth upload.
• Unknown mods are only listed. Nothing happens to the player. Staff press Approve (never flagged again, across updates) or Block.
• For a blocked mod you choose what happens on join: flag only, kick with your own message, or ban. Staff can also let named players keep a blocked mod (live, no restart).
• Keybind, resource-pack, brightness (fullbright) and class checks, re-run every 15-30 minutes while a player is online. Staff can also see each player’s resource packs, with suspicious ones marked.

Server-side checks

• On by default: fly, ground spoof, speed, reach, auto-click, no-fall, nuker, walking on water, step, fast ladder, block reach, x-ray ore ratio, chat spam and repeated vehicle kills.
• Experimental and off by default: fast break, scaffold, killaura, aimbot, no-slow, high jump, phase, walking in a container and illegal items (which also looks inside shulker boxes, bundles and backpacks).
• Every check has its own switch. In DevTools -> DETECTION CHECKS (or /trident checks) admins turn each one on or off and choose what it does: log only, flag, kick or ban. By default they only flag.
• Vehicle kill loot duplication fix. Some vehicle mods (Superb Warfare, for one) put a victim’s drops into the vehicle that ran them over, and when a corpse mod (such as Corpse) also keeps those items, the loot is duplicated. Trident spots the same loot in both places and removes the copy, without needing either mod. You choose which copy stays (detection.lootDupeKeep), the driver gets a flag, and an admin can switch it off.
• Built to stay quiet around other mods without knowing them by name: explosions, mines and traps, launch pads, knockback, vehicles of any mod (including standing on a parked vehicle), attacks a mod makes for the player (such as drone strikes), speed and jump blocks, and mod-cancelled falls are all handled. Other mods can also request an exemption through a small API.

Staff ranks

• Helper, Moderator and Admin, with permissions you can edit per rank and per player (DevTools -> STAFF & RANKS, or /trident staff). Server operators always have full access.
• A menu that only shows what you may use. Anything a person cannot use is not shown at all, so nobody sees what the anti-cheat has beyond their own tools. The server-wide tools in DevTools (logs, mod lists, staff & ranks, detection checks, diagnostics, reload) are for server operators by default, and an admin can give any of them to a whole rank or a single person.
• Helpers can escalate a report to a moderator.

Reports and staff tools

• One anti-cheat report per player, listing every check that fired plus the context (held item, ping, location).
• Reports also save what was inside shulker boxes, bundles and backpacks (Sophisticated Storage included), and staff see the full contents when they hover the item.
• Players can file reports with /report, see their status with /myreports, and edit them while still open. They are told once when their report has been handled, right away or at their next login.
• Claim / uphold / dismiss workflow, kick / ban / mute and an optional Discord webhook.
• Inventory viewer for online and offline players. Offline players are listed under OFFLINE, and staff who may modify inventories can take items out of (or put items into) their inventory, armor, off hand and ender chest. Every change is saved at once, the old save file is kept as a backup, nothing is written if the player comes online or the file changes, and the window closes itself when they log in.
• Spectate a player without them noticing: smooth camera, nearest chunks first, entities, vehicles, poses, held items, block changes and projectiles, and (with Simple Voice Chat) you hear what the target hears. It copes with the target leaving, dying, teleporting or changing dimension.
• Vanish (/trident vanish): moderators and admins become invisible to players who are not staff. No body, no player list entry, no join / leave / death messages.
• Reload without a restart: /trident reload re-reads the config, staff, mod lists and check switches and restarts the checks while the server keeps running.

World log (block log, rollback, chest log)

• Who broke it, and put it back. Every block placed, broken or replaced is recorded with who did it and how, kept for 500 hours, and can be rolled back up to 200 hours (/trident log rollback), restored and undone. Works for modded blocks and machines without knowing those mods, and a destroyed chest comes back with its items.
• Explosions, fire, lava and TNT are credited to the person behind them: the player who lit the TNT, the shooter of a missile or grenade, the driver of a vehicle, and for Immersive Vehicles the player controlling the gun that dropped the bomb. A fire or lava a player started stays theirs when it spreads.
• Chest log, 500 hours. Who put what into and took what out of every chest, barrel, shulker box and modded storage, with a:container rollbacks that give stolen items back.
• Storage mods are covered (none is required). Who took items out through a terminal, request screen or logistics order, and which chest, shulker box, Create vault or drawer they came out of: Tom’s Simple Storage, Simple Storage Network, Create’s Stock Ticker orders, Storage Drawers and Sophisticated Storage are logged per player and per container, each switchable in the config. The inspector shows both halves of a double chest, or a whole vault, as one container, and lists hoppers, funnels and chutes placed next to it.
• Exact causes. TNT lit by a grenade, bomb or bullet goes to whoever fired it; TACZ grenades, Immersive Vehicles bombs, rockets, missiles and shells are named (mts bomb <name>), any Immersive Vehicles vehicle that crashes or explodes is credited to its pilot, and placing a hopper (or a Create funnel, arm, chute…) is flagged with a red ! because it can empty a chest without the chest log showing it.
• Easy to read. Every explosion is one line, newest at the bottom of the chat, with pages, clickable coordinates, /trident log near, an inspector (click a block or chest) and a preview before you roll back. Rollbacks work a little each tick, so the server keeps running.
• Permissions per rank (worldlog.view, worldlog.rollback, worldlog.purge). Saved in the world folder, small, and compressed automatically.

Consent-based screenshots

• Staff can request a screenshot of a player’s Minecraft window only (never the desktop or other programs).
• Each player is asked once per server in chat (Accept / Decline), and a notification is shown every time one is taken.
• A screenshot can start a report and be attached as ban proof.
• Server owners choose whether declining is allowed (requireConsent).

Setup (about 10 minutes)

1. Put the jar in mods on the server and on every client.
2. Start once, then op yourself (or add your name to config/tridentac/whitelist.json).
3. Join and use /admin. Open DEVTOOLS -> MODS to review what players run.
4. Want zero risk first? Set general.learnMode = true in config/tridentac-common.toml.

Commands (/t is a shortcut for /trident): /admin, /trident status, /trident mods, /trident screenshot <player>, /trident staff, /trident checks, /trident vanish, /trident reload, /trident log (world log), /trident diag (operators), /myreports, /report.

Compatibility

Works on a plain Forge server. Optional integrations load only if present: TACZ (gun hit evidence, aim analysis, grenade names in the world log), Curios, Simple Voice Chat (hear the target while spectating) and Sophisticated Storage (contents in reports; Sophisticated Backpacks is supported the same way but untested). The world log also knows Immersive Vehicles, Create, Simple Storage Network, Tom’s Simple Storage, Storage Drawers and Sophisticated Storage: each is used only when installed and can be switched off in the config (worldLog.storageMods). None of them is needed.

Tested on a real server and game client together with Immersive Vehicles, Superb Warfare, TACZ, Vic’s Point Blank, MineTraps and the FCP vehicle pack: traps, ghost and troll blocks, mines, jump pads, vehicles, gun fire and mod-made attacks did not cause flags. The loot duplication fix was tested against the real Superb Warfare and Corpse. If a vehicle mod’s riders ever get flagged, add the mod to carrierEntities in the config.

Performance

• Nothing is written to disk during a server tick, and the checks cost a few thousandths of a tick per player. The one exception is a staff member editing an offline player’s inventory, which saves that single player file at once.
• On a player’s own game nothing runs per frame unless that player is being spectated.
• An optional diagnostics log (/trident diag on, off by default, operators only) records what the checks saw, so a bug report can include it.

Privacy

• Mod file hashes are sent to Modrinth only to find a matching upload (can be turned off with integrity.lookupModrinth = false).
• Screenshots need the player’s consent and only ever capture the game window.
• A Discord webhook is optional and off until you set it.
• Changes to an offline player’s inventory are written to that player’s own save file and noted in the server log with the staff member’s name.

Honest limits

• Anything a client reports (mod list, keybinds, brightness) can be faked by a modified client. Treat it as a signal for staff, not proof.
• It cannot detect cheats that only change what the client displays (freecam, ESP, wallhack).
• Vanish hides you from other players, but not from /list or the player count in the server list.
• Tested in a real game: Immersive Vehicles (driving and crashing), Create and Simple Storage Network. Tested only against the real mod files on a scripted test server: Storage Drawers, Tom’s Simple Storage and Sophisticated Storage. Not yet tested in a real game: firing Superb Warfare guns and Sophisticated Backpacks.
• Items moved by hoppers, funnels, belts, chutes and pipes with nobody behind them are not logged (the inspector lists who placed such blocks). The world log is new and has been run on a test server so far, not on a busy public one.
• This is a beta: the behaviour checks were tested with scripted cheat clients and several large mods, but have not been tuned on many servers yet, which is why they only flag by default. Please report false flags with the check name and what the player was doing.

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