
Modrinth · Minecraft mod
Ultimate Key Lock
Allows to lock Doors and Containers with Trial Keys!
Quick answer
Which Ultimate Key Lock release should I use?
Ultimate Key Lock 26.2 targets 26.2 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Ultimate Key Lock required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Ultimate Key Lock 26.2 need?
26.2. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Ultimate Key Lock without breaking your instance.
Built for Ultimate Key Lock 26.2. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 26.2. It targets 26.2 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 26.2. It opens that exact file at the source.
About this project
What does Ultimate Key Lock add?
✨ Context
This mod simply allows to use Trial Keys and Ominous Trial Keys to lock blocks and entities.
By default on: Doors, Trapdoors, Fence Gates, Barrels and all Chests variants including Boats and Minecart.


🗝️ FEATURES
🔒 Locking
- Trial Keys on any lockable block will prevent interaction with it.
Chests will no longer open (protecting their inventory), neither will doors.
- Ominous Trial Keys will still allow the Owner (the Player who used it) to interact with the block, without needing the key.
This means they can even destroy the key and have exclusive access to a Chest or Trapdoor.
- With either Key, the block becomes unminable by both players and mobs.
Villagers and Zombies cannot break locked doors. This truly protects your build and adds lore!
- Keys will be given a unique ID upon first use, similar to vanilla maps.
The Id only exists for tracking and helping players sort their keys.
- Keys will also be automatically renamed based on their bound block, most languages are supported!
Even better: you can still rename the keys at any moment and your custom name will have priority over the automatic rename.
🔓 Unlocking
- Using the same key on the bound block will unlock it.
- The key will lose its autoname but will retain its ID and custom name.
⚡ Redstone
- Dispensers can use Keys to lock blocks.
Use your imagination to create automated locking systems or more :)
- Locked blocks and entities will NOT react to Redstone!
That means buttons will not be able to open doors, hoppers will not pass items down to a locked chest etc.
- Copper Golems will ignore locked chests.
Again, allows complex automation using dispensers and hoppers.
💥 Removal
- Locked Blocks are unbreakable / unmineable. This means the only way to remove them is:
1) Unlocking with the unique key
2) An explosion (TNT, Creeper...)
3) Creative mode
This choice was made so locked blocks are not overpowered, while still offering advantages at low risk.
🔏 Lockable
The following blocks and entities are lockable:
- Doors
- Trapdoors
- Fence Gates
- Chests
- Copper Chests variants
- Barrels
- Minecart with Chest
- Boats with Chest
- Cabinets (Farmers Delight)
Note: Double Doors and Trapdoors will be locked together!

🌐 Supported Languages
The autoname mechanic is supported in the following languages:
- 繁體中文 (Traditional Chinese)
- 简体中文 (Simplified Chinese)
- Dansk (Danish)
- Nederlands (Dutch)
- English
- Eesti (Estonian)
- Français (All French dialects)
- Deutsch (German)
- Italiano (Italian)
- Íslenska (Icelandic)
- 日本語 (Japanese)
- 한국어 (Korean)
- Norsk (All Norwegian dialects)
- Português (Portuguese & Brazilian Portuguese)
- Русский (Russian)
- Español (All Spanish dialects)
- Svenska (Swedish)
- ไทย (Thai)
- Tiếng Việt (Vietnamese)
- Українська (Ukrainian)

⚙️ No configuration required, ready to use!
🔗 Compatibility
- Compatible with most Double Doors/Trapdoors mods.
- Compatible with Biomes o Plenty and Farmers Delight!
- Also compatible with most mods that add variants of doors, trapdoors or containers that register under chests!

CHECK OUT MY OTHER MODS:
Project description from Modrinth.
Pick your setup
Ultimate Key Lock by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
1 loader build26.1.1
1 loader build26.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Ultimate Key Lock versions and loaders
26.2
ultimate_key_lock-26.2.jar
13 Jul 2026
26.1
ultimate_key_lock-26.1.jar
13 Jul 2026
Outdated
ultimate_key_lock-26.2.jar
17 Jun 2026
Outdated
ultimate_key_lock-26.1.jar
13 Jun 2026
Looking for an older file? The official Modrinth project page is in Resources.







