How do I install CauseChain | You Died. Type /why. Get the Chain?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on Spigot — not every file is mirrored on our own servers.

What Minecraft version does CauseChain | You Died. Type /why. Get the Chain work with?

The listing gives Minecraft 1.21, 26.1. This is the version stated by the author or source site, not something we verified ourselves.

Home›Java›Mods›CauseChain | You Died. Type /why. Get the Chain

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CauseChain | You Died. Type /why. Get the Chain

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Open in MC Java Mods Get it on Google Play →

CauseChain
You died. Type /why. Get the chain.

Vanilla says you were blown up by TNT. /why names who lit it, the chain, and the crater.

Keep CoreProtect installed. /co i is still who last touched the block. CauseChain answers a different question: how did this become that.

Why install this?

You already run CoreProtect. /co i tells you who last touched a block. Players still respawn into "Steve was blown up by TNT" and staff still guess which TNT, which player, which WorldGuard region.

CauseChain sits next to CoreProtect. After a death, a deny, or a captured chain, /why prints the chain in chat. Keep /co i for rollback. Keep CauseChain for the story.

Death — respawn, type /why, get igniter + TNT + you
TNT chain — ignite → chain trigger → explosion, with evidence ids
Named deny — /why deny after WorldGuard or GriefPrevention blocks a place
Inspect — click a block you can build on; empty inspect points at /co i
Bow / dispenser — projectile owner when the platform recorded one; a dispenser stays a dispenser
WorldEdit //set — one semantic node, not a thousand block clicks
Paper / Purpur / Folia — 1.21.x and 26.1.2

What /why actually answers

Death

How did you die? — last death for the player who typed it
Unknown parent — if the platform never named a cause, chat says unknown. No fake player.

TNT

Ignite — player lighting TNT
Chain — TNT priming TNT
Crater — explosion, blocks, who started it

Protection

WorldGuard — WorldGuard spawn (visitor) plus the flag
GriefPrevention — claim owner + trust
Both — listed together, marked ambiguous

Land inspect

/why inspect / /why here — captured fire, TNT, WorldEdit on that block
Empty — names the claim or region, then tells you to run /co i. CauseChain does not store every place/break.

Other traces

Bow kill — when the projectile owner was recorded
Dispenser — stays a dispenser
WorldEdit / FAWE — one op node. FAWE is experimental
Fire, falling blocks, explosions — when the platform link is defensible

Commands

Player

Code (Text):

/why
/why deny
/why inspect
/why here

Staff

Code (Text):

/why — inspect toggle
/chain <id>
/cc status
/cc adapters
/cc explain
/cc export
/cc trace
/cc reload

causechain.why.self and causechain.why.claim default true. Staff nodes default op.

PlaceholderAPI: %causechain_last_death% %causechain_last_deny%

/why has a Share button that copies a Discord-ready line.

Install

Drop CauseChain-1.0.0.jar in plugins/ next to CoreProtect and restart. No extra JARs, no account, no cloud.

Required for the loop: CoreProtect. The JAR still loads without it. Empty inspect still tells you to use /co i.

Optional: WorldGuard, GriefPrevention, WorldEdit / FastAsyncWorldEdit, PlaceholderAPI

Requirements

Built for Paper, Purpur, and Folia.

Spigot and CraftBukkit are not supported. They have not been tested.

api-version 1.21 (compiled against Paper 1.21.11)
Smoked this release: Paper 26.1.2 and Purpur 26.1.2 (Java 25.0.2)
Java 21+ compile. Paper 26.x needs Java 25+ at runtime
Server-side only. No client mod
Folia uses region, entity, global, and async schedulers (folia-supported: true). No published Folia stress run. Smoke TNT + death on your Folia jar before you treat it as production-proven.

Minecraft versions on this resource are the versions this release was tested against. 1.20 is not claimed.

Not in this release

/rewind / rolling the world back
CoreProtect history lookup
Logging every successful place/break
Lands
Naming every plugin that cancelled a click
Uploading traces off the server

CauseChain is not affiliated with CoreProtect. Do not ping the CoreProtect author for support.

Privacy

Chat and command text are never stored. Trace upload is not implemented. privacy.telemetry must stay false.

bStats anonymous server counts are on by default. Turn off with privacy.bstats: false or plugins/bStats/config.yml.

DOWNLOAD NOW!!

Docs: https://mbcz.mintlify.app/causechain
Discord: https://discord.com/invite/VQjTVKjs46
Ko-fi: https://ko-fi.com/mbczishim/tip
PayPal: https://www.paypal.com/paypalme/MatthewWatuna
bStats: https://bstats.org/plugin/bukkit/CauseChain/33693
Modrinth: https://modrinth.com/plugin/causechain

License: Apache 2.0.

Commands

/why — Explain how you died, why you can't build, or a captured chain in your claim.
/why [death|deny|inspect|here|player <name>|entity <uuid>|chain <id>]
/chain — Show the causal neighborhood around a node or trace.
/chain <id> [--up|--down]
/causechain — CauseChain status, evidence, export, and admin commands.
/causechain <status|adapters|explain|export|trace|reload|why|help>

Plugin details

Built for Minecraft 1.21+
Plugin version 1.0.0
Author PLUG Labs
Works with CoreProtect, WorldEdit, FastAsyncWorldEdit, WorldGuard, GriefPrevention, PlaceholderAPI

Read from the plugin's own plugin.yml.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21, 26.1
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on Spigot — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

CauseChain | You Died. Type /why. Get the Chain is a free Minecraft Java mod. Compatible with Minecraft 1.21, 26.1. Downloaded 5 times (via Spigot). Download it and open it directly in the game.

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