Is PreToolUse safe to install?

Yes — PreToolUse is safe to install, on this review. Fable 5.1 read every file PreToolUse ships from heygen-com/hyperframes on 7 September 2026 and found nothing that acts against the person installing it; the static scan of its 26 rules grades it A.

Reviewed by Fable 5.1 on 7 September 2026 · a grade is what a scan and a reading found, not a guarantee · how this works

What the reviewer found

PreToolUse on Bash runs an inline node -e script that, only when the command is a git commit in the hyperframes-monorepo checkout, runs bun run build, lint and typecheck and denies the commit if any fail. Local build tooling; the shell commands it runs are the repo's own scripts.

What was read

The file as it ships in heygen-com/hyperframes:

What the static scan said

The scan flagged 1thing. The reviewer kept 1 and dismissed 0 as false.

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.

Produced by agentmods.dev · Fable 5.1 · 7 September 2026

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