AutoRun Key
AutoRun Key lets a player press K once to keep the character walking or sprinting forward until K is pressed again, with no key held down.
What it does
Pressing K switches hands-free forward movement on or off, and sprinting is included, so the auto-sprint default covers ground quickly. Pressing S while the toggle is active opens a screen, and the key layout stays the same from one session to the next.
The mod is client-only and needs Fabric API. Its footprint is small: a single tail hook on KeyboardInput.tick is the only change to movement, which leaves other movement mods free to work as usual. Single-player and multiplayer both work, and a server does not need to install anything. Files are published for Fabric on 1.21.8 – 1.21.11, licensed under the MIT License, and the code is not open source.
Key features
Toggle forward movement
One key, K, switches between walking forward and standing still, so the player does not have to hold a direction.
Auto-sprint by default
Forward movement includes sprinting, so the character covers ground quickly without a second key.
Minimal movement hook
A single hook on the input tick handles the behavior, which keeps interference with other movement mods low.
Backward screen shortcut
Pressing S while the toggle is active opens a screen, letting the player step out of the automatic walk.
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
How it compares
Adaptive Sprinting is client-side only, open source under the MIT License and published for 1.21.4. Sprinter is client-side only, licensed under the Apache License 2.0 and not open source, with files for 1.21 – 1.21.4. Auto Sprint Fabric is client-side only, released for 1.21.11 under All rights reserved. AutoRun Key covers 1.21.8 – 1.21.11 and requires a separate library that the alternatives do not need.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| AutoRun Key | Fabric | 1.21.8 – 1.21.11 | Not published | 2026-05-29 |
| Adaptive Sprinting | Fabric | 1.21.4 | Client-side only | 2025-03-10 |
| Sprinter | Fabric | 1.21 – 1.21.4 | Client-side only | 2025-04-27 |
| Auto Sprint Fabric | Fabric | 1.21.11 | Client-side only | 2026-05-20 |
Questions
Does AutoRun Key need Fabric API?
Which game versions does AutoRun Key support?
In the catalog
AutoRun Key is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from kvapilvaclav0
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What the author says
AutoRun is a tiny, client-only Fabric mod that lets you walk and sprint forward without holding any key. Press K once to start moving — your character will walk and sprint until you press K again, press S (backward), or open any screen.
Official listing
- Modrinth page
- modrinth.com/mod/autorun-key
- Owner
- kvapilvaclav0
- Published
- 2026-05-29
- Updated on Modrinth
- 2026-05-29
- Facts verified
- 2026-10-15