beast-agent@2.89.1

⚠ Under review

Ultra-fast local agent shell for Windows.

AI Security Review

scanned 2d ago · by lpm-firewall-ai

Inspected source does not confirm the scanner’s malicious label, but this review did not resolve the package’s broad runtime behavior and required source coverage. The evidence is insufficient for a clean or malicious verdict.

Static reason

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

Trigger

The application starts or processes agent inputs.

Impact

The available evidence does not establish an attack or its impact.

Mechanism

The inspected sources show workspace instructions entering an agent prompt and Discord messages reaching a callback; the downstream effects were not fully reviewed.

AI rationale

Decision evidence

public snapshot

AI called this Manual Review at 38.0% confidence as Unknown with medium false-positive risk.

AI review observations

The package postinstall runs an Electron repair script; the inspected code describes checking and repairing the Electron runtime.
The engine reads workspace instruction files and adds them to the agent prompt; Discord input is routed to a configured callback.
The main entrypoint and launcher expose a substantial application surface that was not fully resolved in this inspection.

Evidence against

The scanner’s source-similarity labels do not establish malicious behavior, and the inspected excerpts do not show a concrete attack.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 92 file(s), 3.46 MB of source, external domains: 127.0.0.1, api.anthropic.com, api.github.com, api.groq.com, api.openai.com, api.ornek.com, api.search.tinyfish.ai, api.telegram.org, api.typesafe.ai, api.z.ai, beastagent-skills.web.app, bootstrap.pypa.io, codeload.github.com, connectivitycheck.gstatic.com, cp.cloudflare.com, discord.com, docs.astral.sh, duckduckgo.com, fapi.binance.com, feeds.content.dowjones.io, generativelanguage.googleapis.com, git-scm.com, github.com, html.duckduckgo.com, huggingface.co, integrate.api.nvidia.com, news.google.com, npmmirror.com, opencode.ai, openrouter.ai, raw.githubusercontent.com, registry.npmjs.org, schemas.openxmlformats.org, skills.algokod.com, www.bloomberght.com, www.forexcrunch.com, www.forexlive.com, www.google.com, www.investing.com, www.msftconnecttest.com, www.npmjs.com, www.okx.com, www.python.org, www.w3.org

Source & flagged code

27 flagged

package.jsonView file

Lines 25-65json

25 ],

26 "main": "src/main.js",

27 "preferGlobal": true,

28 "bin": {

29 "beast-agent": "bin/beast-agent.js",

30 "beast": "bin/beast-agent.js"

31 },

32 "files": [

33 "src/**/*",

34 "assets/**/*",

35 "scripts/**/*",

36 "bin/**/*",

37 "apk/www/**/*",

38 "!**/__pycache__/**"

39 ],

40 "scripts": {

41 "start": "electron .",

42 "dist": "electron-builder --win nsis portable",

43 "test": "node --test --test-concurrency=6 tests/*.test.js",

44 "release": "node scripts/release.js",

45 "postinstall": "node scripts/fix-electron.js --soft",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L45

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L45

46 "prepublishOnly": "node scripts/swap-electron.js deps",

47 "postpublish": "node scripts/swap-electron.js devdeps"

48 },

49 "devDependencies": {

50 "electron-builder": "^26.15.3"

51 },

52 "dependencies": {

53 "@huggingface/transformers": "3.7.5",

54 "@ngrok/ngrok": "^1.7.0",

55 "ngrok": "5.0.0-beta.2",

56 "@pdf-lib/fontkit": "^1.1.1",

57 "@whiskeysockets/baileys": "^7.0.0-rc14",

58 "@xenova/transformers": "^2.17.2",

59 "electron-updater": "^6.8.9",

60 "ffmpeg-static": "^5.3.0",

61 "imapflow": "^1.7.6",

62 "nodemailer": "^9.0.5",

63 "pdf-lib": "^1.17.1",

64 "pdf-parse": "^2.4.5",

65 "pdf-to-img": "^6.3.0",

bin/beast-agent.jsView file

Lines 1-40javascript

1#!/usr/bin/env node

2'use strict';

4/* Beast Agent global npm launcher (`beast` short alias points to the same script):

5 `beast` / `beast-agent` → launches the app detached, frees the terminal immediately

6 `beast update` → installs the latest version from npm (run while the app is closed) */

8const { spawn, spawnSync } = require(

src/agent/docchat.jsView file

Lines 25-65javascript

25const mem0 = require('./mem0');

27const DIMS = mem0.DIMS || 384;

28const SEARCH_SEM_W

src/agent/searxng.jsView file

Lines 1-35javascript

1'use strict';

3/* SearXNG — local metasearch integration (github.com/searxng/searxng)

4 SearXNG officially targets Linux/Docker; on Windows it crashes because of

5 `import pwd`. This module installs the real searxng (GitHub master) into

6 Beast's EMBEDDED Python + writes a pwd shim + runs it in the background on

7 127.0.0.1:8888. The search chain only uses the 'searxng' engine while it is UP.

9 CLI: beast searxng → install if needed + start

10 beast searxng status → status

src/main.jsView file

5Trigger-reachable chain: manifest.main -> src/main.js L5: const fs = require('fs'); L6: const http = require('http'); L7: const https = require('https'); L8: const dns = require('dns'); L9: const crypto = require('crypto'); ... L13: const OPENCODE_SESSION = 'beast-' + crypto.randomUUID(); L14: const { spawn } = require('child_process'); L15: const { Engine, OBSERVE_MARK, stripAiDashes } = require('./agent/engine'); ... L84: if (res.ok) { L85: const j = await res.json(); L86: const v = String(j.version || '').trim(); ... L95: if (win && !win.isDestroyed()) {

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

src/main.jsView on unpkg · L5

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. src/main.js: sadece API key gir, modeller otomatik çekilir. Hepsi OpenAI-uyumlu. */ { id: 'opencode-zen', name: 'OpenCode Zen', baseUrl: 'https://opencode.ai/zen/v1', hint: 'Ücretsiz modeller var — anahtar: opencode.ai/auth' }, { id: 'opencode-go', name: 'OpenCode Go', baseUrl: 'https://opencode.ai/zen/go/v1', hint: 'Abonelik anahtarı' }, { id: 'openrouter', name: 'OpenRouter', baseUrl: 'https://openrouter.ai/api/v1', hint: 'openrouter.ai/keys' }, { id: 'openai', name: 'OpenAI', baseUrl: 'https://api.openai.com/v1', hint: 'platform.openai.com/api-keys' }, { id: 'anthropic', name: 'Anthropic', baseUrl: 'https://api.anthropic.com/v1', hi

High

Credential Redirect Persistence

Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.

src/main.jsView on unpkg

5const fs = require('fs'); L6: const http = require('http'); L7: const https = require('https'); L8: const dns = require('dns'); L9: const crypto = require('crypto'); ... L13: const OPENCODE_SESSION = 'beast-' + crypto.randomUUID(); L14: const { spawn } = require('child_process'); L15: const { Engine, OBSERVE_MARK, stripAiDashes } = require('./agent/engine'); ... L84: if (res.ok) { L85: const j = await res.json(); L86: const v = String(j.version || '').trim(); ... L95: if (win && !win.isDestroyed()) {

src/agent/store.jsView file

•Manifest-reachable source resolves another installed package, overwrites its runtime code, and injects package-defined remote behavior. src/agent/store.js: const SITE_URL = 'https://sk[redacted]'; const SITE_FALLBACK_URL = 'https://beastagent-sk[redacted]'; const COMMUNITY_URL = 'https://raw.githubusercontent.com/algokodcom/beast-agent/main/store/skills.json'; const SKIP_DIRS = new Set(['node_modules', '.git', '__pycache__', '.drafts']); fs.writeFileSync(p, JSON.stringify(obj, null, 2)); fs.writeFileSync(target, String(content ?? ''), 'utf8');

High

Entrypoint Foreign Package Code Overwrite

Manifest-reachable source overwrites another installed package with package-defined remote behavior.

src/agent/store.jsView on unpkg

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/store.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/store.jsView on unpkg

src/agent/tools.jsView file

5const path = require('path'); L6: const https = require('https'); L7: const dns = require('dns'); L8: const net = require('net'); L9: const { execFile } = require('child_process'); L10: const { spawn } = require('child_process'); ... L222: if (/\bnpm\s+init\b/i.test(raw) && !/(\s-y\b|\s--yes\b)/i.test(raw)) { L223: return '`npm init` sihirbazı soru sorar — `npm init -y` kullan ya da package.json\'u write_file ile yaz.'; L224: } ... L256: ['-NoProfile', '-NonInteractive', '-NoExit', '-ExecutionPolicy', 'Bypass', '-Command', '-'], L257: { cwd: cwd || process.cwd(), windowsHide: true, env: envWithPathPrefix() } L258: );

Critical

Download Execute

Source downloads or fetches remote code and executes it.

src/agent/tools.jsView on unpkg · L5

bin/beast-agent.js#virtual:normalized:round1View file

44} else { L45: try { spawnSync("pkill", ["-f", "node_modules/beast-agent"], { stdio: "ignore" }); } catch {} L46: } ... L57: This command is run by the update button inside a VISIBLE cmd window; L58: it also works from a terminal — npm install output streams on screen. */ L59: if (process.argv[2] === "update") {

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

bin/beast-agent.js#virtual:normalized:round1View on unpkg · L44

src/agent/defaulttools/fastbrowse_task/fastbrowse_bridge.pyView file

•path = src/agent/defaulttools/fastbrowse_task/fastbrowse_bridge.py kind = build_helper sizeBytes = 14937 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

src/agent/defaulttools/fastbrowse_task/fastbrowse_bridge.pyView on unpkg

src/agent/mcp.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/mcp.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/mcp.jsView on unpkg

scripts/release.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = scripts/release.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

scripts/release.jsView on unpkg

src/agent/gittools.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/gittools.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/gittools.jsView on unpkg

src/agent/apps.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/apps.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/apps.jsView on unpkg

src/agent/logger.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/logger.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/logger.jsView on unpkg

src/agent/bus.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/bus.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/bus.jsView on unpkg

src/agent/config.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/config.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/config.jsView on unpkg

src/agent/memory.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/memory.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/memory.jsView on unpkg

src/agent/xlsx.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/xlsx.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/xlsx.jsView on unpkg

src/agent/perception.jsView file

•matchType = normalized_sha256 matchedPackage = beast-agent@2.44.2 matchedPath = src/agent/perception.js matchedIdentity = npm:YmVhc3QtYWdlbnQ:2.44.2 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.

src/agent/perception.jsView on unpkg

Source & flagged code

27 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/fix-electron.js --soft

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/fix-electron.js --soft

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

bin/beast-agent.jsView file

7L8: const { spawn, spawnSync } = require('child_process'); L9: const path = require('path');

High

Child Process

Package source references child process execution.

bin/beast-agent.jsView on unpkg · L7

Findings

2 Critical21 High6 Medium7 Low

CriticalDownload Executesrc/agent/tools.js

CriticalTrigger Reachable Dangerous Capabilitysrc/main.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processbin/beast-agent.js

HighShellbin/beast-agent.js

HighSame File Env Network Executionsrc/agent/searxng.js

HighCredential Redirect Persistencesrc/main.js

HighEntrypoint Foreign Package Code Overwritesrc/agent/store.js

HighCommand Output Exfiltrationsrc/main.js

HighRuntime Package Installbin/beast-agent.js#virtual:normalized:round1

HighSemantic Analysis Limitedbin/beast-agent.js

Affected versions and remediation

This report applies to beast-agent@2.89.1.

See all versions of beast-agent for other recorded verdicts.

Review the evidence and your use of beast-agent@2.89.1 before allowing it. Restrict the permissions described in this report.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.

Evidence last updated: 2026-10-20 19:06:26.556Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Runtime surface

Behavioral surface

Source & flagged code