guard

name	guard
version	0.1.0
description	Full safety mode: destructive command warnings + directory-scoped edits. (gstack)
triggers	["full safety mode","guard against mistakes","maximum safety"]
allowed-tools	["Bash","Read","AskUserQuestion"]
hooks	{"PreToolUse":[{"matcher":"Bash","hooks":[{"type":"command","command":"bash $HOME/.claude/skills/gstack/careful/bin/check-careful.sh","statusMessage":"Checking for destructive commands..."}]},{"matcher":"Edit","hooks":[{"type":"command","command":"bash $HOME/.claude/skills/gstack/freeze/bin/check-freeze.sh","statusMessage":"Checking freeze boundary..."}]},{"matcher":"Write","hooks":[{"type":"command","command":"bash $HOME/.claude/skills/gstack/freeze/bin/check-freeze.sh","statusMessage":"Checking freeze boundary..."}]}]}

When to invoke this skill

Combines /careful (warns before rm -rf, DROP TABLE, force-push, etc.) with /freeze (blocks edits outside a specified directory). Use for maximum safety when touching prod or debugging live systems. Use when asked to "guard mode", "full safety", "lock it down", or "maximum safety".

/guard — Full Safety Mode

Activates both destructive command warnings and directory-scoped edit restrictions. This is the combination of /careful + /freeze in a single command.

Dependency note: This skill references hook scripts from the sibling /careful and /freeze skill directories. Both must be installed (they are installed together by the gstack setup script).

mkdir -p ~/.gstack/analytics
echo '{"skill":"guard","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

Setup

Ask the user which directory to restrict edits to. Use AskUserQuestion:

• Question: "Guard mode: which directory should edits be restricted to? Destructive command warnings are always on. Files outside the chosen path will be blocked from editing."
• Text input (not multiple choice) — the user types a path.

Once the user provides a directory path:

1. Resolve it to an absolute path:

FREEZE_DIR=$(cd "<user-provided-path>" 2>/dev/null && pwd)
echo "$FREEZE_DIR"

2. Ensure trailing slash and save to the freeze state file:

FREEZE_DIR="${FREEZE_DIR%/}/"
eval "$(~/.claude/skills/gstack/bin/gstack-paths)"
STATE_DIR="$GSTACK_STATE_ROOT"
mkdir -p "$STATE_DIR"
echo "$FREEZE_DIR" > "$STATE_DIR/freeze-dir.txt"
echo "Freeze boundary set: $FREEZE_DIR"

Tell the user:

• "Guard mode active. Two protections are now running:"
• "1. Destructive command guard — rm -rf, DROP TABLE, force-push, etc. warn before executing (overridable); catastrophic shapes (recursive delete of / or ~, force-push to the default branch) are hard-denied"
• "2. Edit boundary — file edits restricted to <path>/. Edits outside this directory are blocked."
• "To remove the edit boundary, run /unfreeze. To deactivate everything, end the session."

What's protected

See /careful for the full list of destructive command patterns and safe exceptions. See /freeze for how edit boundary enforcement works.