About Locksmith
From ModrinthCraft keys and lock any block!
Allows the locking of blocks using physical keys instead of permissions.
By default, vanilla doors, chests, and trapped chests are supported. Additional blocks — including modded ones — can be configured server-side.
🔑 Craft iron keys and register them with a secret passphrase
🔒 Lock doors, chests, and other blocks using those keys
📋 Duplicate keys safely (master & copied key system)
🚪 Optional auto-opening/closing for locked doors (incl. double-doors)
🧩 Supports modded blocks via simple configuration
🌐 Fully server-authoritative & multiplayer-safe
🛠️ Curios compatibility (Key slot)
1️⃣ Craft an iron key (1x iron ingot, 2x iron nugget below)
2️⃣ Right-click while holding the key to register it.
3️⃣ Enter a secret passphrase when prompted.
4️⃣ Right-click a door or chest with the registered key to lock it.
5️⃣ Duplicate keys using the minting recipe if multiple players need access. Players without a matching key will be unable to open the locked block.
Server administrators can define exactly which blocks are lockable. This includes vanilla blocks as well as blocks added by other mods.
Example: adding a custom door:
{
"id": "my_mod_doors",
"type": "door",
"blocks": [
"modid:steel_door",
"modid:reinforced_door"
],
"render": {
"offsetX": -0.05,
"offsetY": 0.5,
"offsetZ": -0.5,
"rotX": 0.0,
"rotY": 0.0,
"rotZ": 0.0,
"scale": 0.75,
"hingeNudgeLeft": 0.18,
"hingeNudgeRight": 0.325
}
}
These profiles control locking behavior only. They do not affect block hardness or explosion resistance.
💡 Tips
This mod does not make locked blocks invulnerable. I'd strongly recommend combining this mod with something like OpenPAC (this mod was built exactly for that scenario).
📝 Licensing and distribution
Locksmith is released under the Z2SIX Mod License.
Highlights
From source dataGame versions
Built for Minecraft 1.21.1.
Loaders
Runs on NeoForge.
Footprint
Rated a light load on a server.
Locksmith on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
- Server side
- Required on the server
- Server type needed
- NeoForge
- Server load
- light
- Smallest plan we suggest
- Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.3.3.5, released 2026-07-09
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| NeoForge | 1.21.1 | 1.21.1 |
From 5 recorded builds of Locksmith.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.3.3.5 | 2026-07-09 | 1.21.1 | NeoForge |
| 1.3.3.4 | 2026-06-27 | 1.21.1 | NeoForge |
| 1.3.3.3 | 2026-06-26 | 1.21.1 | NeoForge |
| 1.3.0.1 | 2026-06-25 | 1.21.1 | NeoForge |
| 1.3.0.0 | 2026-06-25 | 1.21.1 | NeoForge |
Run Locksmith on a Minecraft server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogBuilding & decoration
Blocks, furniture, decorations and building tools.
Runs on your server
From source side supportModrinth lists Locksmith as required on the server. Check its Modrinth page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- NeoForge
- Runs on
- Serverrequired on the server
- Game versions
- 1.21.1
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-02Open ↗
- ✓AuthorZ2SIX, as published on Modrinth
- ✓LicenseLicenseRef-Z2SIX-Mod-LicenseFree












