Is PreCompact safe to install?

Yes — PreCompact is safe to install, with something worth knowing. Fable 5.1 read every file PreCompact ships from ruvnet/RuView 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

PreCompact (manual and auto) runs .claude/helpers/hook-handler.cjs, which on every run requires the sibling modules router.js, session.js, memory.js and intelligence.cjs (their top-level CLI code runs on require, and none of them are in the packet, so what actually executes is unreviewed) twice: compact-manual/compact-auto are not defined handlers and just echo '[OK] Hook', then session-end calls intelligence.consolidate and session.end. The visible code is local bookkeeping; the modules doing the work are unreviewed.

What was read

The hook definition and the script it runs, fetched from ruvnet/RuView:

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.

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

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