Chest LockSign
by Yorickx
Chest LockSign lets players protect chests, barrels, furnaces and other containers by placing a sign next to them on a Fabric server.
What it does
While sneaking, a player right-clicks a supported block with a standard sign, and that first sign is created automatically as a Private sign owned by the first player listed on it. Additional players can be granted access through More Users signs. Private inventories cannot be accessed by anyone outside the list, and only the owner or a server operator can break the protected block. Signs placed while sneaking stay ordinary decorative signs. The system follows the Private and More Users sign format, which is inspired by BlockLocker, and it is simple and light like classic server protection plugins.
Chest LockSign is open source under the MIT License and is server-side only, so players join without installing anything, but the server needs Fabric API. Files are published for 1.21.11 and 26.2, and the latest Fabric file is 0.1.2 for 26.2, released 2026-06-22. Commands require operator permissions, and configuration files are generated on first start, with English as the default language and chat messages customized in YAML.
Key features
Private and More Users signs
A Private sign protects a block, and More Users signs add authorized players to it, following the familiar BlockLocker-style format.
Double chests and doors
Both halves of a double chest and the two halves of a door count as one protected object, and private doors resist piston movement.
Automatic sign placement
The protection sign keeps the wood type of the sign used, and the first sign is created automatically when a block is locked.
Operator bypass
Server operators can get past player-facing protections, and redstone automation can be allowed by adding a line to a protection sign.
Stored UUIDs
Player UUIDs are stored with usernames kept visible, and outdated hidden UUIDs no longer grant access.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Private Chests is open source under the GNU Lesser General Public License v3.0 or later, server-side only, for 1.21.11 – 26.2 on Fabric. ClickThroug is client-side only and released under the MIT License for 1.21.10 – 26.3, so it changes nothing on the server. Clickable Signs is server-side only, open source under the MIT License, and covers the same 1.21.11 – 26.2 range as Chest LockSign.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Chest LockSign | Fabric | 1.21.11 – 26.2 | Server-side only | 2026-06-22 |
| Private Chests | Fabric | 1.21.11 – 26.2 | Server-side only | 2026-08-18 |
| ClickThroug | Fabric | 1.21.10 – 26.3 | Client-side only | 2025-12-09 |
| Clickable Signs | Fabric | 1.21.11 – 26.2 | Server-side only | 2026-07-19 |
Questions
Does the server need Fabric API for Chest LockSign?
Who can break a locked block?
Can a locked chest be opened by redstone?
In the catalog
Chest LockSign is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 13,894 mods support Minecraft 26.2.
Similar mods
What the author says
Chest SignLock is an open-source, server-side Fabric mod for Minecraft 26.2 that allows players to protect containers, doors, beacons, and other blocks using signs. The system uses the familiar [Private] and [More Users] format inspired by BlockLocker. No client-side installation is required: only the server needs…
Official listing
- Modrinth page
- modrinth.com/mod/chest-locksign
- Owner
- Yorickx
- Published
- 2026-05-07
- Updated on Modrinth
- 2026-06-22
- Facts verified
- 2026-10-15