SKILL

Careful

From gstack by @garrytan · View on GitHub

Safety guardrails for destructive commands. (gstack)

This skill ships inside the gstack package. Install the package to get this skill plus everything else in the bundle.

sv install garrytan/gstack

<!-- AUTO-GENERATED from SKILL.md.tmpl — do not edit directly --> <!-- Regenerate: bun run gen:skill-docs -->

When to invoke this skill

Warns before rm -rf, DROP TABLE, force-push, git reset --hard, kubectl delete, and similar destructive operations. User can override each warning. Use when touching prod, debugging live systems, or working in a shared environment. Use when asked to "be careful", "safety mode", "prod mode", or "careful mode".

/careful — Destructive Command Guardrails

Safety mode is now active. Every bash command will be checked for destructive patterns before running. If a destructive command is detected, you'll be warned and can choose to proceed or cancel.

bash
mkdir -p ~/.gstack/analytics
echo '{"skill":"careful","ts":"'$(date -u +%Y-%m-%dT%H:%M:%SZ)'","repo":"'$(basename "$(git rev-parse --show-toplevel 2>/dev/null)" 2>/dev/null || echo "unknown")'"}'  >> ~/.gstack/analytics/skill-usage.jsonl 2>/dev/null || true

What's protected

PatternExampleRisk
rm -rf / rm -r / rm --recursiverm -rf /var/dataRecursive delete
DROP TABLE / DROP DATABASEDROP TABLE users;Data loss
TRUNCATETRUNCATE orders;Data loss
git push --force / -fgit push -f origin mainHistory rewrite
git reset --hardgit reset --hard HEAD~3Uncommitted work loss
git checkout . / git restore .git checkout .Uncommitted work loss
kubectl deletekubectl delete podProduction impact
docker rm -f / docker system prunedocker system prune -aContainer/image loss

Safe exceptions

These patterns are allowed without warning:

  • rm -rf node_modules / .next / dist / pycache / .cache / build / .turbo / coverage

How it works

The hook reads the command from the tool input JSON, checks it against the patterns above, and returns permissionDecision: "ask" with a warning message if a match is found. You can always override the warning and proceed.

To deactivate, end the conversation or start a new one. Hooks are session-scoped.