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@babylonjs-toolkit/agent@1.1.44: AI-agent control-surface risk | LPM Firewall

registry / @babylonjs-toolkit/agent / 1.1.44

@babylonjs-toolkit/agent@1.1.44

Installs the Babylon Toolkit Desktop Agent for Claude Code, Codex, GitHub Copilot, Gemini CLI and Antigravity.

AI Security Review

scanned 7d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Global npm installation automatically changes multiple AI clients' instruction surfaces and Codex network permissions without a separate consent gate.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review

Trigger

Global npm installation with lifecycle scripts enabled.

Impact

Changes future agent instructions and expands Codex network capability beyond package-owned configuration.

Mechanism

The postinstall hook invokes the global installer, which inserts package persona instructions and writes Codex configuration enabling workspace network access.

Policy narrative

Installing the package globally activates its postinstall hook. Without requesting consent, the hook invokes an installer targeting multiple global AI-client instruction files and the user's Codex configuration. The installer adds package persona instructions and enables workspace network access. The global-install guard and backups limit scope and support recovery, but do not authorize these broad agent control changes.

AI rationale

The inspected lifecycle chain performs unconsented global AI-agent instruction and permission mutation, meeting the supplied blocking policy. The local-install guard and backups do not remove the global-install attack surface.

Evidence

package.jsonscripts/postinstall.jslib/targets.jslib/install.jslib/codex-config.jslib/persona.js.codex/config.toml~/.claude/CLAUDE.md

Source & flagged code

12 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

lib/bridge/service.jsView file

17Trigger-reachable persistence chain: scripts.postinstall -> scripts/postinstall.js -> lib/doctor.js -> lib/bridge/service.js L17: const path = require('path'); L18: const { spawnSync, spawn: nodeSpawn } = require('child_process'); L19: ... L25: /** What the service copy carries — the package minus the skills payload the bridge never reads. */ L26: const PACKAGE_PARTS = ['package.json', 'bin', 'lib']; L27: const BOOTSTRAP_ATTEMPTS = 5; ... L29: /** L30: * @typedef {{ code: number|null, stdout: string, stderr: string }} ExecResult L31: * @typedef {(file: string, args: string[]) => ExecResult} ServiceExec ... L276: fs.writeFileSync(registration, launchdPlist({ argv, path: pathEnv, home: deps.home, logFile: paths.logFile }), { mode: 0o644 }); L277: exec('launchctl', ['bootout', `gui/${uid}/${

High

Trigger Reachable Persistence

A manifest entrypoint or package-local install chain reaches persistence behavior.

lib/bridge/service.jsView on unpkg · L17

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/bridge/service.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/bridge/service.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 0f0d53140cc2dcd5 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/bridge/service.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 shingleOverlap = 29 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

lib/bridge/service.jsView on unpkg

17const path = require('path'); L18: const { spawnSync, spawn: nodeSpawn } = require('child_process'); L19: ... L25: /** What the service copy carries — the package minus the skills payload the bridge never reads. */ L26: const PACKAGE_PARTS = ['package.json', 'bin', 'lib']; L27: const BOOTSTRAP_ATTEMPTS = 5; ... L29: /** L30: * @typedef {{ code: number|null, stdout: string, stderr: string }} ExecResult L31: * @typedef {(file: string, args: string[]) => ExecResult} ServiceExec ... L276: fs.writeFileSync(registration, launchdPlist({ argv, path: pathEnv, home: deps.home, logFile: paths.logFile }), { mode: 0o644 }); L277: exec('launchctl', ['bootout', `gui/${uid}/${LAUNCHD_LABEL}`]); // not loaded yet is fine L278: // `bootout` returns before launchd has finished tearing the old instance

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

lib/bridge/service.jsView on unpkg · L17

lib/targets.jsView file

1Install-time code directly mutates a foreign AI-agent control surface: L20: default: true, L21: global: { skills: '~/.claude/skills', instructions: '~/.claude/CLAUDE.md' }, L22: project: { skills: '.claude/skills', instructions: 'CLAUDE.md' }, L23: }, ... L27: default: true, L28: global: { skills: '~/.agents/skills', instructions: '~/.agents/AGENTS.md' }, L29: project: { skills: '.agents/skills', instructions: 'AGENTS.md' }, L30: }, ... L34: default: true, L35: global: { skills: null, instructions: '~/.codex/AGENTS.md', config: '~/.codex/config.toml' }, L36: project: { skills: null, instructions: 'AGENTS.md', config: '.codex/config.toml' }, L37: }, Write operation from lib/bridge/config.js: L90: function writeSettings(settings, file = bridgeConfigPath()) { L91: fs.mkdirSync(path.dirname(fi

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

lib/targets.jsView on unpkg · L1

skills/bt-atlas/scripts/preview.pyView file

•path = skills/bt-atlas/scripts/preview.py kind = build_helper sizeBytes = 2478 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

skills/bt-atlas/scripts/preview.pyView on unpkg

lib/bridge/unity/discover.jsView file

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/bridge/unity/discover.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/bridge/unity/discover.jsView on unpkg

lib/bridge/blender/discover.jsView file

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/bridge/blender/discover.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/bridge/blender/discover.jsView on unpkg

lib/selfupdate.jsView file

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/selfupdate.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/selfupdate.jsView on unpkg

lib/bridge/unity/ops.jsView file

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/bridge/unity/ops.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/bridge/unity/ops.jsView on unpkg

Source & flagged code

12 flagged

package.jsonView file

Lines 15-46json

15 "url": "https://github.com/babylontoolkit/skills/issues"

16 },

17 "repository": {

18 "type": "git",

19 "url": "git+https://github.com/babylontoolkit/skills.git"

20 },

21 "license": "MIT",

22 "author": "Mackey Kinard",

23 "bin": {

24 "bt-agent": "bin/bt-agent.js"

25 },

26 "files": [

27 "skills",

28 "bin",

29 "lib",

30 "scripts",

31 "persona.md",

32 ".codex/config.toml"

33 ],

34 "scripts": {

35 "postinstall": "node scripts/postinstall.js",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L35

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L35

36 "deploy-all": "npm publish --access public",

37 "test": "node --test tests/*.test.js"

38 },

39 "engines": {

40 "node": ">=18"

41 },

42 "publishConfig": {

43 "access": "public"

44 }

45}

46

lib/bridge/service.jsView file

Lines 1-37javascript

1'use strict';

2

3/**

4 * The start-at-login service (D55). `bt-agent bridge --install-service` copies this zero-dependency

5 * package to `~/.babylon-toolkit/service/` (so the service never points into an ephemeral npx cache) and

6 * registers `node <service>/bin/bt-agent.js bridge --service` to start when the user logs in:

7 *

8 * macOS a launchd agent ~/Library/LaunchAgents/com.babylontoolkit.bridge.plist

9 * Linux a systemd user unit ~/.config/systemd/user/babylon-toolkit-bridge.service

10 * Windows a Startup-folder script %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\babylon-toolkit-bridge.vbs

lib/targets.jsView file

Lines 1-21javascript

1'use strict';

2

3const { resolveTargetPath } = require('./paths');

4

5/**

6 * The install target matrix.

7 *

8 * Adding support for another AI client is one entry here — no other file changes.

9

skills/bt-atlas/scripts/preview.pyView file

•path = skills/bt-atlas/scripts/preview.py kind = build_helper sizeBytes = 2478 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

skills/bt-atlas/scripts/preview.pyView on unpkg

lib/bridge/unity/discover.jsView file

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/bridge/unity/discover.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/bridge/unity/discover.jsView on unpkg

lib/bridge/blender/discover.jsView file

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/bridge/blender/discover.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/bridge/blender/discover.jsView on unpkg

lib/selfupdate.jsView file

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/selfupdate.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/selfupdate.jsView on unpkg

lib/bridge/unity/ops.jsView file

•matchType = normalized_sha256 matchedPackage = @babylonjs-toolkit/agent@1.1.42 matchedPath = lib/bridge/unity/ops.js matchedIdentity = npm:[redacted]:1.1.42 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/bridge/unity/ops.jsView on unpkg