HandSwing Toggle

HandSwing Toggle is a tiny client mod that lets you turn off the first-person hand swing animation — the quick down-and-up arc your held item makes every time you swing, attack, or place a block. Vanilla offers no setting for it: View Bobbing controls walking sway, but the per-swing arm flick is always on.

What it does

• A single key (K by default) toggles the first-person hand-swing animation on or off.
• When off, your held item stays steady in your view while you mine, attack, and place blocks. Damage, block breaking, item use, hit registration, and packet timing are completely unaffected — only the local animation is suppressed.
• Other players still see your normal arm swing in third-person — the server-side swing packet is sent as usual, so multiplayer behavior is identical.
• Action-bar message confirms the new state every time you toggle.

Why

• Accessibility / motion sickness. Some players get queasy from the constant per-click arm flick, especially during fast mining or PvP. Vanilla View Bobbing: off doesn't disable swing arcs — this mod does.
• Clean stream feed. Streamers and recorders who want a calmer first-person view (especially with high-attack-speed combat or rapid building) can flatten the held item completely.
• Focus. With the hand-swing arc gone, the crosshair area stays visually quiet — easier to read HUDs, durability bars, or aim with a bow.

Controls

• K — toggle hand-swing animation on/off. Default is on (vanilla behavior). The action-bar shows Hand swing: ON / Hand swing: OFF when you press it.

Notes

• Pure client-side, no server install needed. Works on any Fabric server, fully vanilla compatible — the server can't tell the mod is there.
• One small mixin into LivingEntity.swingHand(Hand) that no-ops only for the local client player when toggled off. Other entities and the network packet path are untouched.
• No config file; the setting is per-session (resets on restart). Default-on so installing the mod doesn't change your game until you actually press K.
• ~80 lines of code, no extra dependencies beyond Fabric API.

Compatibility

Minecraft 1.21.8, 1.21.9, 1.21.10, 1.21.11 — Fabric Loader 0.16+. One JAR covers all four. Drop into your mods/ folder alongside Fabric API.