Custom Sense
Custom Sense lets a player assign a separate mouse sensitivity to each held item, so swapping items in the main hand changes the camera speed without touching the settings.
What it does
The mod checks which item is in the hand and applies the sensitivity multiplier set for it in real time. When no rule matches that item, the default vanilla sensitivity is used, so the global setting is never replaced. Rules can be created in-game, and the configuration is stored as JSON that persists between sessions.
Lower sensitivity suits precise aiming with swords, bows or crossbows, while higher sensitivity suits fast movement with blocks or utility items. The mod runs only on the client, so a server does not need it and players join without installing anything. It is published for Fabric across 11 release versions, 1.21.1 – 1.21.11, and the code is released under the MIT License, though it is not open source.
The latest Fabric file, 1.0.0 for 1.21.11, is in the beta channel and was published on 2026-03-30, after the first release on 2026-03-24.
Key features
Per-item sensitivity
Each item can carry its own mouse sensitivity multiplier, set independently of the global value.
Automatic switching
The active multiplier changes as soon as the held item changes, with no manual adjustment during play.
In-game rule creation
A current-item function lets players add a rule for the item in hand from the in-game configuration screen.
Optional HUD display
A HUD element can show the sensitivity currently in effect, so the active value is visible during play.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x11 of 11 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who use different gameplay styles in one session, such as PvP combat, ranged fights and building, and want each to have its own mouse feel.
How it compares
SensCalc is a Fabric mod for 1.21.11 only, client-side, under the Creative Commons Attribution 4.0 license, and it is not open source. Bossclient is a client-side Fabric mod for 1.21.4 – 1.21.11, under All rights reserved and not open source. RedHitIndicator is a client-side Fabric mod for 1.21.1 – 1.21.8 under the MIT License, and it is not open source, so Custom Sense covers a wider set of versions than it while sharing the same license.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Custom Sense | Fabric | 1.21.1 – 1.21.11 | Client-side only | 2026-03-30 |
| SensCalc | Fabric | 1.21.11 | Client-side only | 2026-03-31 |
| Bossclient | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-06-16 |
| RedHitIndicator | Fabric | 1.21.1 – 1.21.8 | Client-side only | 2026-02-17 |
Questions
Does Custom Sense need to be installed on the server?
Which versions does Custom Sense support?
Does changing sensitivity per item replace the default setting?
In the catalog
Custom Sense is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
Custom Sense is a lightweight, client-side Fabric mod that dynamically adjusts mouse sensitivity based on the item currently held in the player’s main hand. Instead of relying on a single global sensitivity setting, the mod enables precise, per-item customization. This allows players to optimize their control for…
Official listing
- Modrinth page
- modrinth.com/mod/custom-sense
- Owner
- Leander.kyvelos1
- Published
- 2026-03-24
- Updated on Modrinth
- 2026-03-30
- Facts verified
- 2026-10-15