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.
Features
- One key, two states. Press K to toggle hands-free forward movement on/off.
- Sprinting included. Auto-sprint is on by default — covers ground fast.
- Safe defaults. Pressing S (move backward) cancels auto-run instantly, so you never get stuck running off a cliff while you grab a drink. Auto-run also disables itself if you die, mount a vehicle, fall asleep, or open any inventory/menu.
- Tiny footprint. Only one small
KeyboardInput.ticktail hook — other movement mods keep working as expected. - Client-only. Works on any server (singleplayer or multiplayer), no server install needed.
How it works
On every client tick, the mod rebuilds the PlayerInput record with forward = true and sprint = true while auto-run is active. The change is invisible to the server — it's the same packet your fingers would send.
Compatibility
Tested on Minecraft 1.21.8, 1.21.9, 1.21.10, and 1.21.11 (Fabric Loader 0.16+). One JAR for all four versions.
Default key
The toggle is bound to K (hard-coded for now). Want a different key or a config screen? Open an issue.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.8, 1.21.9, 1.21.10
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as autorun-1.0.0.jar — drop this file into the mods folder
- Download size: 6 KB
- Download link checked 11 Sept 2026 — working
These come from our own check of the pack file, not from the source page.