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@nerdev/skillset: Suspicious npm security report (Warn) | LPM Firewall

registry / @nerdev/skillset / 0.3.0

@nerdev/skillset@0.3.0

A curated, auto-synced collection of agent skills (design, animation, dev workflow) with a CLI to install them into any harness: Claude Code, OpenCode, Cursor, Codex, Gemini.

AI Security Review

scanned 17h ago · by lpm-firewall-ai

No attack was identified. The CLI copies package skills into selected agent skill directories when a user invokes install.

Static reason

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

Trigger

Explicit invocation of the skillset install command.

Impact

No confirmed malicious effect or unconsented install-time agent control-surface mutation was established.

Mechanism

The CLI selects configured global or project skill directories and copies the selected skill folders there.

AI rationale

The manifest contains no npm install lifecycle hook, and the inspected agent-skill writes occur only through the explicit CLI install command. The flagged source excerpts show module packaging and manually invoked synchronization behavior, not a concrete attack.

Decision evidence

public snapshot

AI called this Clean at 91.0% confidence as Benign with low false-positive risk.

Why the final policy warns

The AI recommended clean. Static policy retained a warning. The static scanner classified the package as malicious with confidence of at least 85%. A critical static finding has confidence of at least 90%. These conditions do not mean that the AI confirmed malicious behavior.

Evidence for AI clean decision

package.json defines CLI commands but no preinstall, install, or postinstall lifecycle hook.
The CLI install command is explicitly invoked and accepts target, scope, and dry-run options.

Source & flagged code

10 flagged · loading source

package.jsonView file

•scripts.install = node bin/skillset.mjs install

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.install = node bin/skillset.mjs install

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

skills/ui/impeccable/scripts/live-browser.jsView file

5297const url = bust ? candidate + (candidate.includes('?') ? '&' : '?') + 't=' + Date.now() : candidate; L5298: const mod = await import(/* @vite-ignore */ url); L5299: return { mod, url: candidate };

Medium

Dynamic Require

Package source references dynamic require/import behavior.

skills/ui/impeccable/scripts/live-browser.jsView on unpkg · L5297

bin/skillset.mjsView file

13import { execSync } from "node:child_process"; L14: import { cpSync, existsSync, mkdirSync, readFileSync, readdirSync, rmSync } from "node:fs"; L15: import { homedir } from "node:os"; ... L22: const HARNESSES = { L23: claude: { global: join(homedir(), ".claude", "skills"), project: ".claude/skills" }, L24: opencode: { global: join(homedir(), ".config", "opencode", "skills"), project: ".opencode/skills" }, L25: cursor: { global: join(homedir(), ".cursor", "skills"), project: ".cursor/skills" }, L26: codex: { global: join(homedir(), ".agents", "skills"), project: ".agents/skills" }, L27: gemini: { global: join(homedir(), ".gemini", "skills"), project: ".gemini/skills" }, ... L150: } L151: mkdirSync(destBase, { recursive: true }); L152: cpSync(join(SKILLS_DIR, skill), dest, { recursive:

Critical

Ai Agent Control Hijack

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

bin/skillset.mjsView on unpkg · L13

•Runtime or CLI code links a write operation to an explicit external AI-agent control path: #!/usr/bin/env node import { execsync } from "node:child_process"; import { cpsync, existssync, mkdirsync, readfilesync, readdirsync, rmsync } from "node:fs"; import { homedir } from "node:os"; import { dirname, join, resolve } from "node:path"; import { fi

High

External Ai Agent Control Surface Mutation

Runtime or CLI source writes behavior-bearing configuration into a user or project AI-agent control surface.

bin/skillset.mjs

skills/ui/impeccable/scripts/impeccable.cmdView file

•path = [redacted].cmd kind = build_helper sizeBytes = 8498 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

skills/ui/impeccable/scripts/impeccable.cmdView on unpkg

skills/ui/impeccable/scripts/modern-screenshot.umd.js#virtual:normalized:round1View file

•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.

skills/ui/impeccable/scripts/modern-screenshot.umd.js#virtual:normalized:round1View on unpkg

scripts/sync.mjsView file

•matchType = normalized_sha256 matchedPackage = @nerdev/skillset@0.2.3 matchedPath = scripts/sync.mjs matchedIdentity = npm:QG5lcmRldi9za2lsbHNldA:0.2.3 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/sync.mjsView on unpkg

Source & flagged code

10 flagged

package.jsonView file

Lines 1-40json

1{

2 "name": "@nerdev/skillset",

3 "version": "0.3.0",

4 "description": "A curated, auto-synced collection of agent skills (design, animation, dev workflow) with a CLI to install them into any harness: Claude Code, OpenCode, Cursor, Codex, Gemini.",

5 "type": "module",

6 "bin": {

7 "skillset": "bin/skillset.mjs"

8 },

9 "files": [

10 "bin",

11 "scripts",

12 "skills",

13 "curations",

14 "vendor.json",

15 "!skills/business/brag/assets/music/*.mp3"

16 ],

17 "scripts": {

18 "sync": "node scripts/sync.mjs",

19 "list": "node bin/skillset.mjs list",

20 "install": "node bin/skillset.mjs install",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L20

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L20

21 "lint:ste": "node scripts/ste-gate.mjs",

22 "fix:em-dashes": "node fix-em-dashes.mjs"

23 },

24 "keywords": [

25 "agent",

26 "skills",

27 "claude",

28 "opencode",

29 "cursor",

30 "codex",

31 "design",

32 "ai"

33 ],

34 "license": "MIT",

35 "repository": {

36 "type": "git",

37 "url": "git+https://github.com/NalinDalal/skillset.git"

38 },

39 "publishConfig": {

40 "access": "public"

skills/ui/impeccable/scripts/live-browser.jsView file

5297const url = bust ? candidate + (candidate.includes('?') ? '&' : '?') + 't=' + Date.now() : candidate; L5298: const mod = await import(/* @vite-ignore */ url); L5299: return { mod, url: candidate };

Medium

Dynamic Require

Package source references dynamic require/import behavior.

skills/ui/impeccable/scripts/live-browser.jsView on unpkg · L5297

bin/skillset.mjsView file

Lines 1-33javascript

1#!/usr/bin/env node

2/**

3 * skillset: install, list, and sync agent skills from this repo.

4 *

5 * skillset list list available skills

6 * skillset install [--skill <name>]... install into agent harnesses

7 * --target claude,opencode,cursor,codex,gemini (default: all detected)

8 * --scope global|project (default: global)

9 * --dry-run

10 * skillset sync [--dry-run] re-vendor from upstream repos

skills/ui/impeccable/scripts/impeccable.cmdView file

•path = [redacted].cmd kind = build_helper sizeBytes = 8498 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

skills/ui/impeccable/scripts/impeccable.cmdView on unpkg

skills/ui/impeccable/scripts/modern-screenshot.umd.js#virtual:normalized:round1View file

•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.

skills/ui/impeccable/scripts/modern-screenshot.umd.js#virtual:normalized:round1View on unpkg

scripts/sync.mjsView file

•matchType = normalized_sha256 matchedPackage = @nerdev/skillset@0.2.3 matchedPath = scripts/sync.mjs matchedIdentity = npm:QG5lcmRldi9za2lsbHNldA:0.2.3 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/sync.mjsView on unpkg