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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).
GSTACK_STATE_ROOT=$(~/.claude/skills/gstack/bin/gstack-paths --get GSTACK_STATE_ROOT); : "${GSTACK_STATE_ROOT:?gstack-paths failed; reinstall with ./setup or /gstack-upgrade}"
mkdir -p "$GSTACK_STATE_ROOT"/analytics
echo '{"skill":"guard","ts":"'$(date -u +%Y-%m-%dT%H:%M:%SZ)'","repo":"'$(basename "$(git rev-parse --show-toplevel 2>/dev/null)" 2>/dev/null || echo "unknown")'"}' >> "$GSTACK_STATE_ROOT"/analytics/skill-usage.jsonl 2>/dev/null || true
Setup
Ask the user which directory to restrict edits to. Use AskUserQuestion:
- Question: "Guard mode: which directory should edits be restricted to? Destructive command warnings are always on. Files outside the chosen path will be blocked from editing."
- Text input (not multiple choice) — the user types a path.
Once the user provides a directory path:
Set the user-selected boundary with the shared writer, which resolves a physical absolute path and serializes replacement with investigation cleanup:
bash "$HOME/.claude/skills/gstack/freeze/bin/freeze-state.sh" set "<user-provided-path>"
On helper failure, do not claim the boundary is active. Preserve the state and report recovery; never bypass the shared writer with a direct write or deletion.
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 persistent edit boundary, run
/unfreeze. Ending the session stops its hooks but does not delete that boundary."
What's protected
See /careful for the full list of destructive command patterns and safe exceptions.
See /freeze for how edit boundary enforcement works.