yahoo-finance2@4.0.6
VERIFIED· install onlyPublisher claims: "JS API for Yahoo Finance" Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Nothing executable in the bundle ran; the trace covers the install step only.- Tested
- every file read, file written and host contacted by what ran
- Not tested
- use of the skill by an agent
Is [email protected] safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (1 scenario; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-10 and scored it 89/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 1 scenarios · 0 deviationsStatic findings
* console.log(`Number of puts: ${firstExpiration.puts.length}`);Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.text: "Please consider completing the survey at https://bit.ly/yahoo-finance-api-feedback " +Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.* console.log(`ATM Put: Strike $${atmPut.strike}, IV: ${(atmPut.impliedVolatility * 100).toFixed(2)}%`);Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why."lock:cloudflare": "npx -p [email protected] npm install --prefix tests/cloudflare --package-lock-only",Fix: Pin versions and sources; vendor anything fetched at install time.* console.log(`ATM Put: Strike $${atmPut.strike}, IV: ${(atmPut.impliedVolatility * 100).toFixed(2)}%`);Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.* console.log(`Number of puts: ${firstExpiration.puts.length}`);Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.Cost to the agent
Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.
Known vulnerabilities
No advisories in OSV for yahoo-finance2@4.0.6 as of 47 h ago. This is the package itself, not its dependencies.