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SKILL verified MIT Self-run

Bear Crawl Backward

skill-sumitaich1998-slavex-bear-crawl-backward · by sumitaich1998

Bear-crawls backward on hands and feet with the knees off the floor, keeping facing, via a low translating sequence. Use when a command mentions bear crawl backward, reverse bear crawl, crawl backward on hands and feet, or bear crawl in reverse.

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Install

$ agentstack add skill-sumitaich1998-slavex-bear-crawl-backward

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access No
  • Filesystem access No
  • Shell / process execution No
  • Environment & secrets No
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

Security review passed
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3mo ago

Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

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About

bear-crawl-backward

A flat-back bear crawl moving backward (opposite hand/foot), knees hovering. Translate root while OMITTING faceDeg so the heading holds.

Composes: move-arm + move-leg + move-torso

How

  • Use a sequence with loop:false. Frame root is ABSOLUTE; compute the travel axis from state.position+state.faceDeg (0=+Z, 90=+X). The example assumes origin facing +Z. Make z more negative; do NOT set faceDeg. Keep root.y~-0.45.
  • Torso forward (Spine+X~55); drive opposite hand and foot back together.
  • durationMs ~2600.

Example

  • "bear crawl backward" -> {"durationMs":2600,"say":"Bear crawl, reverse.","sequence":{"loop":false,"frames":[{"t":0,"pose":{"Spine":[55,0,0],"LeftUpperArm":[130,0,90],"RightUpLeg":[60,0,0],"RightLeg":[80,0,0]},"root":{"y":-0.45,"z":-0.4}},{"t":0.5,"pose":{"RightUpperArm":[130,0,-90],"LeftUpLeg":[60,0,0],"LeftLeg":[80,0,0]},"root":{"y":-0.45,"z":-0.8}},{"t":1,"pose":{"Spine":[0,0,0],"LeftUpperArm":[0,0,90],"RightUpperArm":[0,0,-90],"LeftUpLeg":[0,0,180],"RightUpLeg":[0,0,180],"LeftLeg":[0,0,0],"RightLeg":[0,0,0]},"root":{"y":0,"z":-1.2}}]}}

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.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

Reviews

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Versions

  • v0.1.0 Imported from the upstream source.