ras-commander: Skill for Claude Code

.claude/skills/dev_manage_git-worktrees/SKILL.md

dev_manage_git-worktrees is a skill for Claude Code from gpt-cmdr/ras-commander. It costs 97 tokens per session (1,911 once invoked), scanned A, original, MIT.

A workflow for creating a separate Git worktree, which is an additional working folder connected to the same repository but using its own branch.

In plain words
What is it for?
Use it before isolated implementation work, when working on several branches at once, or when a task specifically requires a Git worktree.
Why use it?
It keeps feature work isolated from the current files and branch, reducing accidental changes across tasks.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths; mentions subagents; names the AskUserQuestion tool.

This is gpt-cmdr/ras-commander's own configuration. It tells Claude Code how to work on ras-commander itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ras-commander configures →

Reuse

Borrowing it

Nothing to install: this file belongs to gpt-cmdr/ras-commander. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/gpt-cmdr/ras-commander/main/.claude/skills/dev_manage_git-worktrees/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/gpt-cmdr/ras-commander

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for dev_manage_git-worktrees

README.md
[![agentmods](https://agentmods.dev/badge/skills/gpt-cmdr/ras-commander/dev_manage_git-worktrees/github.svg)](https://agentmods.dev/skills/gpt-cmdr/ras-commander/dev_manage_git-worktrees)
Your own site
<a href="https://agentmods.dev/skills/gpt-cmdr/ras-commander/dev_manage_git-worktrees"><img src="https://agentmods.dev/badge/skills/gpt-cmdr/ras-commander/dev_manage_git-worktrees/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for dev_manage_git-worktrees

Your own site · 80×15
<a href="https://agentmods.dev/skills/gpt-cmdr/ras-commander/dev_manage_git-worktrees"><img src="https://agentmods.dev/badge/skills/gpt-cmdr/ras-commander/dev_manage_git-worktrees.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,911 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Rogue Agent · line 13
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
  • medium Excessive Agency · line 59
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 286
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00097 $0.01911
Opus 5.5 $0.00039 $0.00764
Sonnet 5.5 $0.00019 $0.00382
Haiku 4.5 $0.00010 $0.00191

Measured 1mo ago against content hash b5692f675f46, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dev_manage_git-worktrees scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/dev_manage_git-worktrees/SKILL.md · 305 lines

How it starts

The opening of the file, as written. The whole thing — 305 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Using Git Worktrees

Overview

Use git worktrees to create isolated workspaces sharing the same repository, enabling work on multiple branches simultaneously without switching.

Core principle: Apply systematic directory selection + safety verification to ensure reliable isolation.

Announce at start: "I'm using the dev_manage_git-worktrees skill to set up an isolated workspace."

Primary Sources

Git Documentation:

  • git worktree --help - Complete git worktree reference
  • git worktree list - Show all worktrees
  • git worktree remove - Cleanup worktrees

Integration:

  • .claude/agents/git-operations/ - Delegates worktree setup to this skill
  • finishing-a-development-branch skill - REQUIRED for cleanup after work complete

Directory Selection Process

Follow this priority order:

1. Check Existing Directories

# Check in priority order
ls -d .worktrees 2>/dev/null     # Preferred (hidden)
ls -d worktrees 2>/dev/null      # Alternative

If found: Use that directory. If both exist, prefer .worktrees.

2. Check AGENTS.md

grep -i "worktree.*director" AGENTS.md 2>/dev/null

If preference specified: Use it without asking.

3. Ask User

If no directory exists and no AGENTS.md preference:

No worktree directory found. Where should I create worktrees?

1. .worktrees/ (project-local, hidden)
2. ~/.config/superpowers/worktrees/<project-name>/ (global location)

Which would you prefer?

Safety Verification

For Project-Local Directories (.worktrees or worktrees)

MUST verify .gitignore before creating worktree:

# Check if directory pattern in .gitignore
grep -q "^\.worktrees/$" .gitignore || grep -q "^worktrees/$" .gitignore

If NOT in .gitignore:

Per "Fix broken things immediately" principle:

  1. Add appropriate line to .gitignore
  2. Commit the change
  3. Proceed with worktree creation

Why critical: Prevents accidentally committing worktree contents to repository.

Read the full file on GitHub · 305 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 305 lines · 97 tokens per session scan A b5692f675f46

Subscribe to this mod's changes

dev_manage_git-worktrees is a skill published in the GitHub repository gpt-cmdr/ras-commander (88 stars, last pushed today), licensed MIT. It adds 97 tokens to every session and 1,911 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.