Clavis
by SSKirillSS
Clavis turns opening a locked chest into a small skill-based mini-game, where the loot inside decides how hard the lock is to pick.
What it does
Locked chests in Clavis open through a lockpicking mini-game rather than a single click. How hard a lock is to pick scales with the value of the loot it guards, so richer chests bring a tougher lockpicking challenge. Three main difficulty levels mark the interface with colored outlines and a smiley, and each lock floats above its chest so a player can see the challenge before starting. Players decide whether a chest is worth the time before they try it.
Clavis is meant to keep high-tier loot from arriving too early in a run, which slows the pace of dungeon rewards in the early game. Better performance in the mini-game yields a larger reward, and the mod states that a perfect result can nearly double the loot. The mod is available on Fabric and NeoForge for 1.21.1, and it needs both ShatterLib and OctoLib. Lootr is an optional dependency. The server and every player need the mod installed. The mod is released under All rights reserved and is not open source.
Key features
Skill-based lockpicking
Each locked chest opens through a mini-game whose success determines how much loot the player receives.
Difficulty tied to loot value
Chests holding more valuable loot present harder locks, with three difficulty levels shown by color and icon.
Rewards that scale with performance
A stronger result in the mini-game yields a larger reward, and a perfect result can nearly double the loot.
Pacing of dungeon loot
High-tier items are kept back from early progression, so the loot economy scales with the player's skill and progress.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Optional 1
Use cases
Adventure maps and modpacks
Modpack developers can use Clavis to make dungeon chests part of an adventure, with rewards that players have to earn.
Who it’s for: Players who want chests to be a small event rather than a routine click, and modpack developers who want to control when strong dungeon items appear.
How it compares
Chest to Vault is a Fabric-only, server-required mod for 1.21.11 under the MIT License, and it is open source. Dungeon Keys & Loot is a NeoForge mod for 1.21 – 1.21.11 that runs on client and server and is not open source. Structures Loot Tweak covers Fabric, Forge and NeoForge for 1.20.1 – 1.21.1 under the MIT License, while Clavis itself is published only for Fabric and NeoForge 1.21.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Clavis | Fabric and NeoForge | 1.21.1 | Client and server | 2026-03-30 |
| Chest to Vault | Fabric | 1.21.11 | Server required, client optional | 2026-01-15 |
| Dungeon Keys & Loot | NeoForge | 1.21 – 1.21.11 | Client and server | 2026-03-12 |
| Structures Loot Tweak | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-10-12 |
Questions
Does Clavis need ShatterLib and OctoLib?
Does the server need Clavis?
Does Clavis work with Lootr?
In the catalog
Clavis is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from SSKirillSS
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What the author says
Clavis transforms the traditional loot system: every loot chest is now locked and can be opened through a simple yet engaging mini-game. The better you perform, the richer your reward - up to nearly double the loot for a perfect result. Lock's difficulty depends on how valuable the loot inside is. The richer the…
Official listing
- Modrinth page
- modrinth.com/mod/clavis
- Owner
- SSKirillSS
- Published
- 2025-06-29
- Updated on Modrinth
- 2026-03-30
- Facts verified
- 2026-10-15