Auto Crystal Switcher
by VoidXD
Auto Crystal Switcher is a client-side Fabric and Quilt utility that moves End Crystals into the hotbar when an obsidian block is placed, for Crystal PvP play.
What it does
When a player places an obsidian block, the mod checks whether End Crystals are present in the hotbar. If they are, it switches the selected slot to the crystal stack, so the next placement can happen without manual scrolling. Only the hotbar is searched, and the switch runs only in that situation, which keeps it from changing slots at random.
The mod is built for competitive Crystal PvP, where small delays in slot changes break combo timing. It adds no GUI and no animations, and its behavior stays simple: detect the obsidian placement, switch the slot, and leave the rest of the inventory alone.
Installation needs Fabric or Quilt. Servers do not need it; each player installs it for their own game. Files are published for 18 release versions, 1.20.4 – 26.1.2, and the latest build is 1.0.0 for 26.1.2, released on the beta channel. The mod is not open source; it is released under All rights reserved.
Key features
Obsidian-triggered switch
Placing an obsidian block selects the End Crystal stack in the hotbar, ready for an immediate crystal placement.
Hotbar-only detection
The mod checks only the hotbar for End Crystals, so the switch does not pull items from other inventory slots.
No GUI or animations
The mod adds no menus, overlays or visual effects, and the slot change happens directly.
Randomness guard
Detection is limited to the obsidian placement case, so the selected slot does not change at unrelated moments.
Gallery
Compatibility
Latest build for each game version and loader.
26.x3 of 3 versions with builds
1.21.x12 of 12 versions with builds
1.20.x3 of 3 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Tool Switcher is a Fabric client mod for 1.20 – 26.3 released under the MIT License and is open source, so it covers general tool switching rather than crystal placement. Smart Tool Switcher is also client-side only, Fabric-based and under the MIT License, for 1.21.4 – 26.1.2, but it is not open source. Make My Crystals Faster is a Fabric mod for 1.20 – 26.2 that runs on client and server and is open source under the GNU Affero General Public License v3.0 or later, so it needs installing on both sides.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Auto Crystal Switcher | Fabric and Quilt | 1.20.4 – 26.1.2 | Client-side only | 2026-04-23 |
| Tool Switcher | Fabric | 1.20 – 26.3 | Client-side only | 2026-10-11 |
| Smart Tool Switcher | Fabric | 1.21.4 – 26.1.2 | Client-side only | 2026-05-03 |
| Make My Crystals Faster | Fabric | 1.20 – 26.2 | Client and server | 2026-07-26 |
Questions
Does Auto Crystal Switcher need to be installed on the server?
Which loaders does Auto Crystal Switcher support?
Can Auto Crystal Switcher be used with a different Crystal PvP client?
In the catalog
Auto Crystal Switcher is one of 7,216 Magic mods on ModsFinder, and one of 3,630 Magic mods for Fabric. 15,189 mods support Minecraft 26.1.2.
More from VoidXD
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What the author says
Auto Crystal Switch is a lightweight PvP utility mod designed for Crystal PvP players who demand maximum speed and precision. When you place obsidian and have an End Crystal in your hotbar, the mod automatically switches to the crystal — allowing you to place it instantly without manual scrolling. Built for…
Official listing
- Modrinth page
- modrinth.com/mod/auto-crystal-switcher
- Owner
- VoidXD
- Published
- 2026-02-11
- Updated on Modrinth
- 2026-04-23
- Facts verified
- 2026-10-15