About Locked Chest Unlocker
From mod.ioWalk up to a locked chest carrying the key it wants, and it opens by itself.
Locked Chest Unlocker
Walk up to a locked chest carrying the key it wants, and it opens by itself.
No window, no keybind, no menu to learn. If the key is in your bag and the chest is in front of you, the key goes in.
What it does
Core Keeper scatters locked chests through the world — copper, iron, scarlet, octarine, galaxite and solarite — and each one wants its own key. Opening one by hand means stopping, opening the chest, finding the right key in your bag, and dragging it across.
This mod does that part for you. When a locked chest comes within range and you are carrying its key, one key is taken from your bag and put into the chest. The chest then opens exactly the way it always has: the same sound, the same sparkle, the same loot.
Nothing about the chest or its contents is changed. The mod only does the dragging.
When it will not open a chest
It is deliberately careful, because an automatic mod that gets this wrong costs you an item you cannot get back.
- You do not have the key. It will never open a chest another way.
- The key is in a pouch. Only your main bag is searched. Take the key out and it works.
- The slot is locked. If you have padlocked the slot the key is in, nothing touches it.
- Something is already inside the chest. If there is anything in there, you put it there.
- It is not really a locked chest. Pedestals, display stands and other things that take an item are left completely alone.
- You are in the middle of doing something. See below.
It waits until you have finished
Putting the key in is an inventory move, and an inventory move makes the game re-equip what is in your hand — which drops a held mouse button. So if a chest unlocked while you were holding the button down to place a row of objects, the placing stopped after the first one and you had to click again.
It now stays out of the way entirely: while you are holding a use button, for half a second after you let go, and while your bag or the map is open, the mod does nothing at all. Stop, and the chest opens. You should never see it happen at a moment you did not choose.
Relic chests are opt-in
The three Titan Temple chests do not take a key — they take a boss relic (the Azeos Feather Fan, the Omoroth Compass or the Ra-Akar Automaton) and give you a piece of Godsent armour.
That is a fair trade, and it is the only thing those relics are for. But it is also permanent, and consuming a boss trophy because you happened to walk past a chest is not something this mod will do unless you ask. Turn on "Also open relic chests" in the options if you want them handled too.
Options
Found in the in-game settings menu if you have the Mod Settings Menu installed. Without it the mod still works — it just uses the defaults below.
| Option | Default | What it does | |---|---|---| | Unlock chests automatically | On | The master switch. Off means the mod does nothing at all. | | Range in tiles | 10 | How close a chest has to be. 1 means practically standing on it; 20 is about as far as you can see. | | Also open relic chests | Off | Lets the three Titan Temple chests consume a boss relic. Read the section above first. |
Changes take effect immediately — there is nothing to restart.
Multiplayer
Works on a normal server, and nobody else needs the mod. Everything the mod sends is the same instruction your own chest window sends when you drag a key in by hand, so the server opens the chest with its own code. If you are a guest on someone's world and the game would not let you take the key, the mod cannot either.
Highlights
From source dataFootprint
Rated a light load on a server.
Last update
Its author last shipped an update 27d ago.
Locked Chest Unlocker on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Core Keeper servers. We download it from mod.io, place it, and restart the server.
- Server side
- Client-only: it runs in players’ own games, so it can’t be installed on a server
- Server load
- light
- Smallest plan we suggest
- Core Keeper — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.0.1, released 2026-10-07
Run Locked Chest Unlocker on a Core Keeper server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogQuality of life & UI
Small conveniences, tweaks and interface improvements players notice straight away.
Client-side mod
From source side supportmod.io lists Locked Chest Unlocker as not supported on servers. It runs in players’ own games, not on your server.
Compatibility
- Game
- Core Keeper
- Runs on
- Client only
Verified at the source
- ✓mod.ioOfficial listing, checked 2026-11-03Open ↗
- ✓AuthorSharpybara, as published on mod.io
- ✓LicenseNot published by the sourceFree








