Is @dyyz1993/agent-browser safe to install?

@dyyz1993/agent-browser was flagged as CRITICAL RISK (risk score 185) with 14 findings detected across 180 files. Review the findings before installing.

What security issues were found in @dyyz1993/agent-browser?

Sigil detected 14 findings in @dyyz1993/agent-browser, including patterns related to code_patterns, network_exfil, install_hooks. See the full scan report for details.

Scans/npm/@dyyz1993/agent-browser

@dyyz1993/agent-browser

npm

Summary

@dyyz1993/agent-browser v0.11.1 was classified as CRITICAL RISK with a risk score of 185. Sigil detected 14 findings across 180 files, covering phases including code patterns, network exfiltration, install hooks. Review the findings below before installing this package.

CRITICAL RISK(185)

v0.11.1

10 April 2026, 07:19 UTC

by Sigil Bot

Risk Score

185

Findings

Files Scanned

180

Provenance

Registry

https://www.npmjs.com/package/@dyyz1993/agent-browser/v/0.11.1

Scanned From

https://registry.npmjs.org/@dyyz1993/agent-browser/-/agent-browser-0.11.1.tgz

Findings by Phase

•

Phase Ordering

Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.

install-npm-postinstall

CRITICAL

npm lifecycle script — runs automatically on install

package/package.json:35

    "test:watch": "vitest",
    "postinstall": "node scripts/postinstall.js",
    "changeset": "changeset",

Why was this flagged?

npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.

Badge

Markdown

[![Sigil Scan](https://sigilsec.ai/badge/npm/@dyyz1993/agent-browser)](https://sigilsec.ai/scans/650875D4-3647-4489-ADF2-D658C5A84AD2)

HTML

<a href="https://sigilsec.ai/scans/650875D4-3647-4489-ADF2-D658C5A84AD2"><img src="https://sigilsec.ai/badge/npm/@dyyz1993/agent-browser" alt="Sigil Scan"></a>

Run This Scan Yourself