registry / AI-agent capability abuse / @chem-x/starter-kit / 26.9.16-668

@chem-x/starter-kit@26.9.16-668

Chemical X Protocol: Private drop-in architecture starter kit and capsule generator

AI Security Review

scanned 11d ago · by lpm-firewall-ai

The inspected agent configuration changes are available through explicit setup commands, so the source supports a warning for agent capability rather than an install-time control hijack. The manifest's postinstall target is absent from this package snapshot, and the inspected sources show no concrete attack behavior.

Static reason

One or more suspicious static signals were detected.

Trigger

A user runs the install hooks or install MCP command and selects or invokes the relevant setup.

Impact

Agent behavior and project editor configuration may change after setup; the inspected code does not establish an unconsented install-time change.

Mechanism

The installer can append a search directive to AGENTS.md and write a Chemical X MCP server entry to editor configuration.

AI rationale

Evidence

AGENTS.md.cursor/mcp.json.vscode/mcp.json

Decision evidence

public snapshot

AI called this Suspicious at 85.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The manifest defines a postinstall command that points to scripts/postinstall.mjs; that file is absent from the package snapshot.
The installer can append a directive to an existing AGENTS.md file.
The installer exposes agent and MCP setup through explicit CLI commands.
The MCP installer writes configuration under .cursor/mcp.json; its test invokes that installer directly.

Evidence against

The package snapshot contains no scripts/postinstall.mjs, so the declared postinstall command has no corresponding source file here.
The reviewed agent configuration changes are reached through installer commands, not shown as automatic import-time behavior.

Behavioral surface

Source

ChildProcessEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 89 file(s), 590 KB of source, external domains: api.github.com, chemicalx.xophz.com, github.com, img.shields.io, mycompassconsulting.com, www.w3.org

Source & flagged code

6 flagged

package.jsonView file

•scripts.postinstall = node scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

cli/audit-preflight-git.jsView file

Lines 1-21javascript

1import fs from 'node:fs';

2import { spawnSync } from 'node:child_process';

High

Child Process

Package source references child process execution.

cli/audit-preflight-git.jsView on unpkg · L1

4const SOURCE_FILE_PATTERN = /\.(tsx|ts|jsx|js|vue|svelte)$/;

5const EXCLUDED_PATTERNS = ['.test.', '.spec.', '.min.', '.d.ts'];

7export const isSourceFilePath = (filePath) => {

8 const isExtensionValid = SOURCE_FILE_PATTERN.test(filePath);

9 if (!isExtensionValid) return false;

10 const isExcluded = EXCLUDED_PATTERNS.some((pat) => filePath.includes(pat));

11 return !isExcluded;

12};

14export const parseGitStatusOutput = (output) => {

15 const lines = output.split('\n');

16 const files = [];

18 for (const rawLine of lines) {

19 const trimmed = rawLine.trim();

20 if (!trimmed) continue;

21 const cleanPath = trimmed.replace(/^[MADRCU?! ]+\s+/, '').trim().replace(/^"|"$/g, '');

cli/terminal.jsView file

10} else if (platform === "win32") { L11: spawnSync("cmd.exe", ["/c", "start", '""', url], { stdio: "ignore", timeout: 3000 }); L12: } else {

High

Shell

Package source references shell execution.

cli/terminal.jsView on unpkg · L10

cli/license.jsView file

3import os from 'node:os'; L4: import { spawnSync } from 'node:child_process'; L5: import { ... L17: L18: export const API_BASE = process.env.CHEMICAL_X_API_URL || 'https://chemicalx.xophz.com'; L19: export const GATEKEEPER_API_URL = process.env.COMPASS_GATEKEEPER_URL || 'https://mycompassconsulting.com/wp-json/compass/v1/gatekeeper';

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

cli/license.jsView on unpkg · L3

cli/scaffold.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. import fs from 'node:fs'; import path from 'node:path'; import { hasgum, guminput, promptquestion, renderbanner } from './terminal.js'; import { obtainlicensekey, fetchstarterkitfiles, loadlocalblueprintfiles } from './license.js'; export const runscaffold = async (projectname, rawargs = [], onrunaudit = null) => { renderbanner('chemical x: molecular architecture scaffolder (npm create chemx)'); const licensekey = await obtainlicensekey(rawargs, onrunaudit); let iscommunity = false; let files = {}; if (!licensekey) { process.stdout.write( '\n\x1b[38;2;98;201;255m⚡ chemical x: community edition (free)\x1b[0m\n' + 'the community version is free because

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

cli/scaffold.jsView on unpkg

Source & flagged code

6 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

cli/audit-preflight-git.jsView file

1import fs from 'node:fs'; L2: import { spawnSync } from 'node:child_process'; L3:

High

Child Process

Package source references child process execution.

cli/audit-preflight-git.jsView on unpkg · L1

Findings

5 High4 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processcli/audit-preflight-git.js

HighShellcli/terminal.js

HighSame File Env Network Executioncli/license.js

HighTrigger Reachable External Ai Agent Control Surface Mutationcli/scaffold.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to @chem-x/starter-kit@26.9.16-668.

See all versions of @chem-x/starter-kit for other recorded verdicts.

Review the evidence and your use of @chem-x/starter-kit@26.9.16-668 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: 2026-10-12 05:55:05.241Z (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

Related packages

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Behavioral surface

Related packages

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Source & flagged code