What the reviewer found
PreToolUse on Bash runs .claude/hooks/pre-bash-guard.py, which denies foreign fallow binaries, unbounded cargo --workspace output and commits missing the VS Code dist bundle, then an inline step that runs rustfmt and typos on staged files before git commit. Deny guard plus local formatters.
What was read
The hook definition and the script it runs, fetched from fallow-rs/fallow:
.claude/settings.json.claude/hooks/pre-bash-guard.py
What the static scan said
The 26-rule scan found nothing in this file; the review read it anyway.
How this review was made
Fable 5.1 read the files above on 7 September 2026 and answered three questions: is it dangerous to whoever installs it, is each scanner finding real, and what should the installer know. The verdict is bound to the file's hash; when the file changes, it is scanned afresh and reviewed again. A script that changes while the definition does not is not re-reviewed — that is a known gap. How the scan and the review work.