ClaudeRabbit
New scan
npmjs.com/package/is-buffer · 2.0.5+s

90/ 100

No threats observed

No threats observed: The package completed an observed install and entry-point run with no score deductions. Scanned 29 Oct 2026.

Watch how it happenedScan another
NetworkNone
No network calls
CodeNothing taken off
no code deduction

Score

90 / 100
1000

Nothing was taken off for what the code did or what running it showed.

What it did

32 events in 15.3s
Fetched2.2s
2092 bytes
Checked3.1s
0 locked dependencies, 0 malicious
Read6.5s
0 scanner finding(s)
Jev11.8s
Answered questions from the evidence
Sandbox11.8s
install completed, entry completed, 0 forged call(s)
Score12.0s
90 No threats observed

Luna's report

No threats were observed in the tested run. Pin the scanned version. Behaviour outside the observed install and entry windows was not verified.

We installed the package, ran its entry point in a throwaway sandbox, and scanned the reachable code. The entry point completed, and the run produced a complete record with no score deductions.

What it ran

Installednpm · 1 package · 2.5s
Entry pointenv -i HOME=/hom…T=1 FAKETIME_NO_CAC
NetworkNo calls
MachineDestroyed after the scan

Jev's answers

answered from the evidence
Docs check
The docs do not say it makes no network calls
The docs do not say it has no side effects
Show all 3 answers
What it did fits what its docs say it is for
Install check
Install-time code uses the network
Install-time code does not read credentials
Show all 5 answers
Install-time code does not run other programs or payloads
Install-time code is not obfuscated
Jev judged this code harmlesspackage.json

Not verified

Behaviour outside the observed install and entry windows

Code paths not triggered by install or the entry point

Show all 3 items

Payloads gated on calendar dates past the accelerated clock window, or on hosts that need real responses

Reputation

npmWeekly npm downloads: 56964616
npmFirst npm publish: 4381 days ago
npmNo maintainer change within 30 days
npmFirst published 12 years ago
npmnpm maintainers: feross
npm57M weekly downloads

Shown apart from the code and behaviour findings.