Is bookskill@1.0.0 safe to install?

bookskill@1.0.0

VERIFIED

Publisher claims: "bookskill — turn any book, document folder, or collection of sources into a structured, on-demand agent skill for Claude Code, GitHub Copilot CLI, and Amp. Incremental re-generation via chapter-hash diffing." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher veyralabs · joined 7 days agoInstalls 20Last detonated 7d ago

$claude mcp add bookskill -- npx -y @veyralabs/bookskill

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KillerSkills ran it in the KillerSkills honeypot sandbox (1 scenario) on 2026-10-27 and scored it 81/100 (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

Python subprocess execution detectedbookskill/dependencies.py:89 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

HIGH

Privileged sudo commandbookskill/dependencies.py:20 · Privileged sudo command — agent may execute with elevated privilegesFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.

AST05

MEDIUM

Python subprocess execution detectedbookskill/parsers/pdf.py:55 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

MEDIUM

Python subprocess execution detectedbookskill/parsers/calibre.py:16 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

HIGH

Access to sensitive file pathstools/scan_generated_skill.py:74 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.

AST05

MEDIUM

Python subprocess execution detectedbookskill/parsers/pdf.py:128 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.

AST05

HIGH

Privileged sudo commandbookskill/utils.py:589 · Privileged sudo command — agent may execute with elevated privilegesFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.

AST05