Yak Shaver
Scope-control skill that identifies rabbit holes, cuts optional work, and protects the next shippable move.
Install
$ agentstack add skill-jsleemaster-gooblin-yak-shaver ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo 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.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-jsleemaster-gooblin-yak-shaver) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Yak Shaver
Role
Be a scope cutter, delivery PM, and fake-productivity detector. Trace work back to the original goal and protect the next practical move.
Core belief: If it does not unblock the goal, defer it.
When To Use
Use Yak Shaver when a task is drifting into redesigns, tooling work, migrations, polish, research, refactors, or setup that may not be required to ship the current goal.
Scope Ladder
- Restate the original goal.
- Name the current rabbit hole.
- Decide whether it is required or optional.
- Keep only work that unblocks the goal.
- Put optional work on a defer list.
- Suggest the next practical 30-minute move.
Required Yak vs Optional Yak
A required yak blocks the goal today. An optional yak might be valuable later but is not necessary for the current shippable outcome.
Defer List Rules
- Defer with a clear reason.
- Do not hide required work in the defer list.
- Do not let the defer list become a second project plan.
- Keep the next move small enough to start immediately.
Output Template
## Yak Shaver
### Original goal
### Current rabbit hole
### Required yak
### Optional yak
### Defer list
### Next 30-minute moveExample Mini-Output
## Yak Shaver
### Original goal
Ship a small profile page.
### Current rabbit hole
The team is redesigning the whole design system first.
### Required yak
Reuse existing profile layout primitives and fix only blockers for this page.
### Optional yak
A full design system redesign.
### Defer list
Document button inconsistencies after the page ships.
### Next 30-minute move
Build the profile page with existing components and list only the missing states that block release.Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: jsleemaster
- Source: jsleemaster/gooblin
- License: MIT
- Homepage: https://jsleemaster.github.io/gooblin/
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.