seal-jacks

name	seal-jacks
description	Performs seal jacks, a jumping-jacks variant that jumps the legs out while the straight arms sweep wide and clap together in front, via a looping sequence with small root.y. Use when a command mentions seal jacks, front-clap jacks, arms-forward jumping jacks, or seal claps. (For overhead jacks, use jumping-jacks.)
category	locomotion
disable-model-invocation	true
subskills	["move-arm","move-leg","balance-and-posture"]

seal-jacks

Hop the legs out and in while the straight arms open wide to the sides then clap together in front — a seal-clap jack.

Composes: move-arm + move-leg + balance-and-posture

How

• Use a sequence with loop:true with a small root.y bounce.
• Legs jack out (abduct 150) as the arms open to the sides (T); legs together as the arms clap forward (UpperArm X90).
• Short durationMs per cycle (~800).

Example

• "do seal jacks" -> {"durationMs":800,"say":"Seal jacks!","sequence":{"loop":true,"frames":[{"t":0,"pose":{"LeftUpLeg":[0,0,180],"RightUpLeg":[0,0,180],"LeftUpperArm":[90,0,0],"RightUpperArm":[90,0,0]},"root":{"y":-0.05}},{"t":0.5,"pose":{"LeftUpLeg":[0,0,150],"RightUpLeg":[0,0,-150],"LeftUpperArm":[0,0,0],"RightUpperArm":[0,0,0]},"root":{"y":0.18}},{"t":1,"pose":{"LeftUpLeg":[0,0,180],"RightUpLeg":[0,0,180],"LeftUpperArm":[90,0,0],"RightUpperArm":[90,0,0]},"root":{"y":-0.05}}]}}

Limits & posture

Keep ≥1 foot grounded except at a jump's airborne apex; stay inside human joint ranges and keep weight over the support — see balance-and-posture.