What the reviewer found
PostToolUse on Skill runs .claude/plugins/n8n/scripts/track-skill-usage.mjs, which for n8n-namespaced skills POSTs the skill name and a SHA-256 of username, hostname, OS, arch and release to telemetry.n8n.io using an embedded write key. Telemetry to the repository's own vendor; no file contents, prompts or environment variables are sent.
telemetry— reports to a vendor
What was read
The hook definition and the script it runs, fetched from n8n-io/n8n:
.claude/settings.json.claude/plugins/n8n/scripts/track-skill-usage.mjs
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.