Is @vectorx/agent-simulator safe to install?

@vectorx/agent-simulator was flagged as CRITICAL RISK (risk score 1835) with 119 findings detected across 164 files. Review the findings before installing.

What security issues were found in @vectorx/agent-simulator?

Sigil detected 119 findings in @vectorx/agent-simulator, including patterns related to install_hooks, code_patterns, obfuscation. See the full scan report for details.

Scans/npm/@vectorx/agent-simulator

@vectorx/agent-simulator

npm

Summary

@vectorx/agent-simulator v1.1.0 was classified as CRITICAL RISK with a risk score of 1835. Sigil detected 119 findings across 164 files, covering phases including install hooks, code patterns, obfuscation. Review the findings below before installing this package.

CRITICAL RISK(1835)

v1.1.0

25 March 2026, 13:06 UTC

by Sigil Bot

Risk Score

1835

Findings

119

Files Scanned

164

Provenance

Registry

https://www.npmjs.com/package/@vectorx/agent-simulator/v/1.1.0

Scanned From

https://registry.npmjs.org/@vectorx/agent-simulator/-/agent-simulator-1.1.0.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-makefile-curl

HIGH

Makefile/script pipes remote content to shell

package/public/assets/index-j_rEEDWU.js:87

`,1;if(On>1e5&&On>U.index*3)throw new Error("potential infinite loop, way more iterations than matches");return J+=Y,Y.length}const ze=O(h);if(!ze)throw _n(i.replace("{}",h)),new Error('Unknown language: "'+h+'"');const Nn=GN(ze);let en="",F=M||Nn;const rr={},Re=new s.__emitter(s);De();let J="",tn=0,pt=0,On=0,Ct=!1;try{if(ze.__emitTokens)ze.__emitTokens(A,Re);else{for(F.matcher.considerAll();;){On++,Ct?Ct=!1:F.matcher.considerAll(),F.matcher.lastIndex=pt;const D=F.matcher.exec(A);if(!D)break;con

Why was this flagged?

A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.

install-npm-postinstall

CRITICAL

npm lifecycle script — runs automatically on install

package/public/assets/main.js:565

`):(this.indentate=function(){return""},this.tagEndChar=">",this.newLine="")}l.prototype.build=function(p){return this.options.preserveOrder?i(p,this.options):(Array.isArray(p)&&this.options.arrayNodeName&&this.options.arrayNodeName.length>1&&(p={[this.options.arrayNodeName]:p}),this.j2x(p,0,[]).val)},l.prototype.j2x=function(p,g,h){let m="",b="";const y=h.join(".");for(let v in p)if(Object.prototype.hasOwnProperty.call(p,v))if(typeof p[v]>"u")this.isAttribute(v)&&(b+="");else if(p[v]===null)thi

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/@vectorx/agent-simulator)](https://sigilsec.ai/scans/EAE5996E-4087-4117-9EDE-1C262E0B1A65)

HTML

<a href="https://sigilsec.ai/scans/EAE5996E-4087-4117-9EDE-1C262E0B1A65"><img src="https://sigilsec.ai/badge/npm/@vectorx/agent-simulator" alt="Sigil Scan"></a>

Run This Scan Yourself