Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/lucas-flatwhite/gstack-ko/gstack-upgradenpx skills add lucas-flatwhite/gstack-ko --skill gstack-upgradegit clone --depth 1 https://github.com/lucas-flatwhite/gstack-koWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00067 | $0.02387 |
| Opus 5 | $0.00034 | $0.01193 |
| Sonnet 5 | $0.00013 | $0.00477 |
| Haiku 4.5 | $0.00007 | $0.00239 |
Grade C, and why
gstack-upgrade scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf "$INSTALL_DIR.bak" "$TMP_DIR" This is a copy
86% identical to gstack-upgrade — 158 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 234 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reference-only note: 이 저장소는 upstream
gstack의 한국어 문서 레이어입니다. 아래 내용은 upstream 설치본을 기준으로 한 reference이며, 실제 실행은 upstream 환경을 따라야 합니다.
/gstack-upgrade
Upgrade gstack to the latest version and show what's new.
Inline upgrade flow
This section is referenced by all skill preambles when they detect UPGRADE_AVAILABLE.
Step 1: Ask the user (or auto-upgrade)
First, check if auto-upgrade is enabled:
_AUTO=""
[ "${GSTACK_AUTO_UPGRADE:-}" = "1" ] && _AUTO="true"
[ -z "$_AUTO" ] && _AUTO=$(~/.claude/skills/gstack/bin/gstack-config get auto_upgrade 2>/dev/null || true)
echo "AUTO_UPGRADE=$_AUTO"
If AUTO_UPGRADE=true or AUTO_UPGRADE=1: Skip AskUserQuestion. Log "Auto-upgrading gstack v{old} → v{new}..." and proceed directly to Step 2. If ./setup fails during auto-upgrade, restore from backup (.bak directory) and warn the user: "Auto-upgrade failed — restored previous version. Run /gstack-upgrade manually to retry."
Otherwise, use AskUserQuestion:
- Question: "gstack v{new} is available (you're on v{old}). Upgrade now?"
- Options: ["Yes, upgrade now", "Always keep me up to date", "Not now", "Never ask again"]
If "Yes, upgrade now": Proceed to Step 2.
If "Always keep me up to date":
~/.claude/skills/gstack/bin/gstack-config set auto_upgrade true
Tell user: "Auto-upgrade enabled. Future updates will install automatically." Then proceed to Step 2.
If "Not now": Write snooze state with escalating backoff (first snooze = 24h, second = 48h, third+ = 1 week), then continue with the current skill. Do not mention the upgrade again.
_SNOOZE_FILE=~/.gstack/update-snoozed
_REMOTE_VER="{new}"
_CUR_LEVEL=0
if [ -f "$_SNOOZE_FILE" ]; then
_SNOOZED_VER=$(awk '{print $1}' "$_SNOOZE_FILE")
if [ "$_SNOOZED_VER" = "$_REMOTE_VER" ]; then
_CUR_LEVEL=$(awk '{print $2}' "$_SNOOZE_FILE")
case "$_CUR_LEVEL" in *[!0-9]*) _CUR_LEVEL=0 ;; esac
fi
fi
_NEW_LEVEL=$((_CUR_LEVEL + 1))
[ "$_NEW_LEVEL" -gt 3 ] && _NEW_LEVEL=3
echo "$_REMOTE_VER $_NEW_LEVEL $(date +%s)" > "$_SNOOZE_FILE"
Note: {new} is the remote version from the UPGRADE_AVAILABLE output — substitute it from the update check result.
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.
- yesterday First seen · 234 lines · 67 tokens per session scan C eb302fc2e949
gstack-upgrade is a skill published in the GitHub repository lucas-flatwhite/gstack-ko (43 stars, last pushed 5mo ago), licensed MIT. It adds 67 tokens to every session and 2,387 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). It is 86% identical to gstack-upgrade, differing in 158 lines, and is treated as a copy.
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