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agent-takkub@1.0.87: AI-agent control-surface risk | LPM Firewall

registry / agent-takkub / 1.0.87

agent-takkub@1.0.87

Desktop cockpit for orchestrating a team of Claude Code agents (Windows + macOS). Install globally: npm i -g agent-takkub

AI Security Review

scanned 2h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the package executes a postinstall hook that globally installs Anthropic's Claude Code CLI if absent and persists the npm global bin directory. It also creates a desktop launcher.

Static reason

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

Trigger

npm install (including global installation)

Impact

Introduces and exposes a foreign AI-agent control surface without an explicit user command.

Mechanism

unconsented postinstall mutation of a foreign AI-agent CLI and user environment

Policy narrative

On installation, the lifecycle hook provisions its own environment, then automatically invokes npm to globally install Anthropic's Claude Code CLI when it is missing. It persists the corresponding global bin directory through shell startup files or the Windows user PATH and creates a launcher. This is an unconsented install-time expansion and mutation of a foreign AI-agent control surface.

Rationale

Source confirms concrete install-time global installation of a foreign AI-agent CLI plus persistent user-environment mutation. This meets the block boundary even though no credential exfiltration was confirmed in the inspected lifecycle code.

Evidence

package.jsonnpm/scripts/postinstall.jsnpm/scripts/pathfix.jsnpm/scripts/shortcut.js~/.agent-takkubnpm global package prefix~/.zshrc~/.bashrcHKCU\Environment\Path~/Desktop/Takkub Cockpit.app

Source & flagged code

7 flagged · loading source

package.jsonView file

•scripts.postinstall = node npm/scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node npm/scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

npm/scripts/postinstall.jsView file

1Install-time code directly mutates a foreign AI-agent control surface: L8: // • REUSES an existing cockpit venv (upgrade in place) instead of wiping it. L9: // • Does NOT touch the global claude CLI, ~/.claude plugins, or ~/.takkub L10: // config. Anything shared/missing is left for an explicit, detect-first ... L87: L88: fs.mkdirSync(agentTakkubHome(), { recursive: true }); L89: ... L116: L117: const claudeOk = ensureClaudeCli(env.claudeCli.present); L118: ... L140: } L141: console.log(' Left untouched: ~/.claude plugins, ~/.takkub config (nothing overwritten).'); L142: console.log('\n Next steps:'); Write operation from npm/scripts/postinstall.js: L8: // • REUSES an existing cockpit venv (upgrade in place) instead of wiping it. L9: // • Does NOT touch the global claud

Critical

Ai Agent Control Hijack

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

npm/scripts/postinstall.jsView on unpkg · L1

dist/agent_takkub-1.0.87-py3-none-any.whlView file

•path = dist/agent_takkub-1.0.87-py3-none-any.whl kind = high_entropy_blob sizeBytes = 2577132 magicHex = [redacted]

High

Ships High Entropy Blob

Package ships high-entropy non-source blobs.

dist/agent_takkub-1.0.87-py3-none-any.whlView on unpkg

•path = dist/agent_takkub-1.0.87-py3-none-any.whl kind = compressed_blob sizeBytes = 2577132 magicHex = [redacted]

Medium

Ships Compressed Blob

Package ships compressed or archive-like blobs.

dist/agent_takkub-1.0.87-py3-none-any.whlView on unpkg

•path = dist/agent_takkub-1.0.87-py3-none-any.whl kind = nested_archive_needs_inspection sizeBytes = 2577132 magicHex = [redacted]

Low

Nested Archive Needs Inspection

Package ships a nested archive or MCP bundle that was inventoried but not recursively analyzed.

dist/agent_takkub-1.0.87-py3-none-any.whlView on unpkg

npm/scripts/shortcut.jsView file

•matchType = normalized_sha256 matchedPackage = agent-takkub@1.0.86 matchedPath = npm/scripts/shortcut.js matchedIdentity = npm:YWdlbnQtdGFra3Vi:1.0.86 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.

npm/scripts/shortcut.jsView on unpkg

Source & flagged code

7 flagged

package.jsonView file

Lines 9-49json

9 "agent-orchestration",

10 "cockpit",

11 "desktop",

12 "cli",

13 "developer-tools"

14 ],

15 "author": "takkub",

16 "repository": {

17 "type": "git",

18 "url": "git+https://github.com/takkub/agent-takkub.git"

19 },

20 "homepage": "https://github.com/takkub/agent-takkub#readme",

21 "bugs": {

22 "url": "https://github.com/takkub/agent-takkub/issues"

23 },

24 "bin": {

25 "agent-takkub": "npm/bin/agent-takkub.js",

26 "takkub": "npm/bin/takkub.js"

27 },

28 "scripts": {

29 "postinstall": "node npm/scripts/postinstall.js",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L29

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L29

30 "prepublishOnly": "node npm/scripts/preflight-publish.js",

31 "test": "node --test npm/scripts/*.test.js"

32 },

33 "files": [

34 "npm/",

35 "!npm/scripts/*.test.js",

36 "dist/*.whl",

37 "assets/icon.ico",

38 "assets/icon.png",

39 "assets/cockpit-main.png"

40 ],

41 "os": [

42 "win32",

43 "darwin"

44 ],

45 "engines": {

46 "node": ">=18"

47 },

48 "engines-note": "This floor is for agent-takkub itself. The OPTIONAL graft code-intelligence feature (installed separately via `takkub doctor --fix`, not an npm dependency of this package) needs Node >=20 — see README's Requirements section. Not raised here because it would force the >=20 floor onto every user even though graft stays off until explicitly enabled.",

49 "license": "MIT"

npm/scripts/postinstall.jsView file

Lines 1-21javascript

1'use strict';

2// npm postinstall bootstrap for `npm install -g agent-takkub`.

3//

4// SAFETY MODEL — check first, never clobber:

5// • Detects what's already present (preflight.js, non-mutating) and REPORTS it.

6// • Provisions ONLY into the isolated AGENT_TAKKUB_HOME (default

7// ~/.agent-takkub) — never a repo `.venv`, never shared user state.

8// • REUSES an existing cockpit venv (upgrade in place) instead of wiping it.

9// • Does NOT touch the global claude CLI, ~/.claude plugins, or ~/.takkub

10

dist/agent_takkub-1.0.87-py3-none-any.whlView file

•path = dist/agent_takkub-1.0.87-py3-none-any.whl kind = high_entropy_blob sizeBytes = 2577132 magicHex = [redacted]

High

Ships High Entropy Blob

Package ships high-entropy non-source blobs.

dist/agent_takkub-1.0.87-py3-none-any.whlView on unpkg

•path = dist/agent_takkub-1.0.87-py3-none-any.whl kind = compressed_blob sizeBytes = 2577132 magicHex = [redacted]

Medium

Ships Compressed Blob

Package ships compressed or archive-like blobs.

dist/agent_takkub-1.0.87-py3-none-any.whlView on unpkg

•path = dist/agent_takkub-1.0.87-py3-none-any.whl kind = nested_archive_needs_inspection sizeBytes = 2577132 magicHex = [redacted]

Low

Nested Archive Needs Inspection

Package ships a nested archive or MCP bundle that was inventoried but not recursively analyzed.

dist/agent_takkub-1.0.87-py3-none-any.whlView on unpkg

npm/scripts/shortcut.jsView file

•matchType = normalized_sha256 matchedPackage = agent-takkub@1.0.86 matchedPath = npm/scripts/shortcut.js matchedIdentity = npm:YWdlbnQtdGFra3Vi:1.0.86 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.

npm/scripts/shortcut.jsView on unpkg