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@doist/twist-cli@3.0.8: AI-agent control-surface risk | LPM Firewall

registry / @doist/twist-cli / 3.0.8

@doist/twist-cli@3.0.8

TypeScript CLI for Twist

AI Security Review

scanned 28d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installing the package automatically updates existing skills across several AI-agent control directories. It writes package-controlled skill content without an explicit user command.

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

npm postinstall during package installation

Impact

Changes instructions available to installed AI agents, including broad .agents support.

Mechanism

automatic overwrite of detected agent skill files

Policy narrative

When npm installs this package, its postinstall hook loads the compiled installer. That installer scans supported agent directories and overwrites every already-installed Twist skill, including Codex, Claude Code, Cursor, and .agents. The mutation is automatic and occurs outside an explicit skill-management command.

AI rationale

The postinstall lifecycle performs unconsented mutation of foreign and broad AI-agent control surfaces. This meets the install-hook abuse blocking boundary despite skipping paths where no prior skill exists.

Evidence

package.jsonscripts/postinstall.jsdist/postinstall.jsdist/lib/skills/update-installed.jsdist/lib/skills/index.jsdist/lib/skills/create-installer.js.claude/skills/twist-cli/SKILL.md.codex/skills/twist-cli/SKILL.md.cursor/skills/twist-cli/SKILL.md

Source & flagged code

7 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

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

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

scripts/check-skill-sync.jsView file

17const modulePath = pathToFileURL(join(root, 'dist/lib/skills/content.js')).href L18: const { SKILL_FILE_CONTENT } = await import(modulePath) L19: const expected = SKILL_FILE_CONTENT

Medium

Dynamic Require

Package source references dynamic require/import behavior.

scripts/check-skill-sync.jsView on unpkg · L17

dist/lib/skills/create-installer.jsView file

24async install(options) { L25: if (!options.local && config.dirName !== '.agents') { L26: const agentDir = join(homedir(), config.dirName); ... L38: } L39: await mkdir(dirname(skillPath), { recursive: true }); L40: await writeFile(skillPath, SKILL_FILE_CONTENT);

Critical

Ai Agent Control Hijack

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

dist/lib/skills/create-installer.jsView on unpkg · L24

dist/lib/input.jsView file

•matchType = normalized_sha256 matchedPackage = @doist/twist-cli@3.0.7 matchedPath = dist/lib/input.js matchedIdentity = npm:QGRvaXN0L3R3aXN0LWNsaQ:3.0.7 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.

dist/lib/input.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = acd00388ab62c770 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @doist/twist-cli@3.0.7 matchedPath = dist/lib/input.js matchedIdentity = npm:QGRvaXN0L3R3aXN0LWNsaQ:3.0.7 similarity = 1.000 shingleOverlap = 22 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.

dist/lib/input.jsView on unpkg

Source & flagged code

7 flagged

package.jsonView file

Lines 1-37json

1{

2 "name": "@doist/twist-cli",

3 "version": "3.0.8",

4 "description": "TypeScript CLI for Twist",

5 "type": "module",

6 "main": "dist/index.js",

7 "bin": {

8 "tw": "dist/index.js"

9 },

10 "scripts": {

11 "build": "tsc -p tsconfig.build.json && chmod +x dist/index.js",

12 "dev": "tsc -p tsconfig.build.json --watch",

13 "start": "node dist/index.js",

14 "type-check": "tsc --noEmit",

15 "lint": "oxlint . --fix && oxfmt",

16 "lint:check": "oxlint . && oxfmt --check",

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

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L17

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L17

18 "check:skill-sync": "node scripts/check-skill-sync.js",

19 "sync:skill": "npm run build && node scripts/sync-skill.js",

20 "test": "vitest run",

21 "test:watch": "vitest",

22 "prepublishOnly": "npm run build && npm test"

23 },

24 "keywords": [

25 "twist",

26 "cli",

27 "messaging",

28 "doist"

29 ],

30 "author": "Ernesto García <ernesto@ernesto.dev>",

31 "license": "MIT",

32 "engines": {

33 "node": ">=24",

34 "npm": ">=11"

35 },

36 "repository": {

37 "type": "git",

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

package.jsonView on unpkg

scripts/check-skill-sync.jsView file

Lines 1-37javascript

1#!/usr/bin/env node

2

3/**

4 * Verifies that skills/twist-cli/SKILL.md is in sync with the generated

5 * skill content from src/lib/skills/content.ts.

6 *

7 * Requires `npm run build` to have been run first.

8 */

9

10import { readFile } from 'node:fs/promises'

dist/lib/skills/create-installer.jsView file

Lines 4-44javascript

4import { CliError } from '../errors.js';

5import { SKILL_FILE_CONTENT, SKILL_NAME } from './content.js';

6export function createInstaller(config) {

7 function getInstallPath

dist/lib/input.jsView file

•matchType = normalized_sha256 matchedPackage = @doist/twist-cli@3.0.7 matchedPath = dist/lib/input.js matchedIdentity = npm:QGRvaXN0L3R3aXN0LWNsaQ:3.0.7 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.

dist/lib/input.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = acd00388ab62c770 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = @doist/twist-cli@3.0.7 matchedPath = dist/lib/input.js matchedIdentity = npm:QGRvaXN0L3R3aXN0LWNsaQ:3.0.7 similarity = 1.000 shingleOverlap = 22 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.

dist/lib/input.jsView on unpkg