Instant Server Switcher
by hotkeyyy
Instant Server Switcher lets a Fabric client jump between the last two fixed Minecraft servers with a single key press, and reconnects to the main server when it gets kicked.
What it does
Two servers can be set as fixed destinations. Pressing the switch key moves the player from the current one to the other, and the choice can be made at any time during play. A quick toggle mode instead alternates between the last two servers the player joined, without any setup.
Auto-fallback watches the connection to the main server. If the player is kicked or disconnected, the client attempts to rejoin the main server automatically. Settings are saved to a config file and loaded again at startup, and they can be edited in game through Mod Menu, which is optional, or changed directly in the config file.
The mod is open source under the MIT License and runs on the client alone. Fabric API and Fabric Language Kotlin are required, and the mod has Fabric files only, for 1.21.8, with version 1.0.0 dated 2025-11-12 as the latest.
Key features
Single-key server switching
One key press moves the player between the two last fixed servers without opening the server list.
Fixed servers mode
Two constant servers can be configured and swapped at any moment during a session.
Auto-fallback reconnect
Rejoins the main server automatically after the player is kicked or disconnected, if the option is enabled.
Persistent configuration
Server choices and options are saved and reloaded at startup, and can be edited in game.
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 2
Optional 1
Use cases
Who it’s for: Players who regularly move between two Minecraft servers, such as a lobby and a game server, and want a key that switches between them. Because only the client needs the mod, server owners do not have to install anything.
How it compares
Audio Switcher is a server-side only Fabric mod under the MIT License, published for 1.21 – 1.21.3, and it changes nothing on the client. Axe and Sword Switcher is a client-side only Fabric mod for 1.21.1 under the MIT License, and it is not open source; it switches tools rather than servers. Instant Server Switcher is client-side only, open source, and built for server switching on 1.21.8.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Instant Server Switcher | Fabric | 1.21.8 | Client-side only | 2025-11-12 |
| Audio Switcher | Fabric | 1.21 – 1.21.3 | Server-side only | 2024-11-28 |
| Axe and Sword Switcher | Fabric | 1.21.1 | Client-side only | 2025-10-15 |
Questions
Does Instant Server Switcher need Fabric API?
Does the server need the mod installed?
Is Mod Menu necessary to change the settings?
In the catalog
Instant Server Switcher is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 17,695 mods support Minecraft 1.21.8.
More from hotkeyyy
Similar mods
What the author says
Switch between your last or fixed Minecraft servers with a single key — with optional auto-fallback to your main server when disconnected.
Official listing
- Modrinth page
- modrinth.com/mod/instant-server-switcher
- Owner
- hotkeyyy
- Published
- 2025-11-12
- Updated on Modrinth
- 2025-11-12
- Facts verified
- 2026-10-15