Is youtube-to-book@1.0.0 safe to install?

Skills/npm/youtube-to-book

youtube-to-book@1.0.0

VERIFIED

Publisher claims: "A Claude Code skill that turns YouTube videos and playlists into typeset LaTeX textbooks" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher dev-shetty · joined 7 days agoInstalls 21Last detonated 7d ago

$claude mcp add youtube-to-book -- npx -y youtube-to-book

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KillerSkills ran it in the KillerSkills honeypot sandbox (1 scenario) on 2026-10-27 and scored it 88/100 (Verified). It did what it claims and nothing else we could detect: no undeclared network egress, no credential reads, no persistent instruction writes. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 1 scenarios · 0 deviations

t+CategoryObserved action

0.0sprocessno install scripts in bundle

0.0sprocessscript backend runs setup only

Static findings

MEDIUM

npx invocation of non-well-known packagebin/cli.js:28 · npx invocation of non-well-known package — may execute untrusted codeFix: Pin versions and sources; vendor anything fetched at install time.

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MEDIUM

npx invocation of non-well-known packagebin/cli.js:29 · npx invocation of non-well-known package — may execute untrusted codeFix: Pin versions and sources; vendor anything fetched at install time.

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Python subprocess execution detectedskill/scripts/render-figures.py:105 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

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MEDIUM

Python subprocess execution detectedskill/scripts/render-figures.py:75 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

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npx invocation of non-well-known packagebin/cli.js:31 · npx invocation of non-well-known package — may execute untrusted codeFix: Pin versions and sources; vendor anything fetched at install time.

AST06

MEDIUM

npx invocation of non-well-known packagebin/cli.js:30 · npx invocation of non-well-known package — may execute untrusted codeFix: Pin versions and sources; vendor anything fetched at install time.

AST06