registry / AI-agent capability abuse / create-chemx / 26.9.16-41

create-chemx@26.9.16-41

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

AI Security Review

scanned 11d ago · by lpm-firewall-ai

Static inspection found explicit CLI setup that writes first-party agent instructions and MCP configuration, a warning-level agent capability. The declared postinstall target is absent, and no lifecycle-triggered attack was established.

Static reason

One or more suspicious static signals were detected.

Trigger

A user runs the CLI hook/setup wizard or install-mcp command and selects setup.

Impact

The setup changes how configured agents discover code and enables them to launch the Chemical X MCP command.

Mechanism

The wizard can append a directive steering agents to use the package query command; MCP setup writes the named server configuration for Cursor, VS Code, and, when present, Antigravity.

AI rationale

Evidence

AGENTS.md.cursor/mcp.json.vscode/mcp.json~/.gemini/config/mcp_config.json

Decision evidence

public snapshot

AI called this Suspicious at 88.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The interactive installer offers an option that writes a query directive into an existing AGENTS.md, instructing agents to use this package’s search command.
The CLI exposes that installer through explicit hook/setup commands, and the installer presents target choices before making changes.
The MCP setup adds a named Chemical X server to Cursor and VS Code project configuration; its fallback runs `npx -y chemx mcp`.
Antigravity configuration is also an installer operation and is skipped unless its expected config directory exists.

Evidence against

The manifest names a postinstall script, but the referenced scripts/postinstall.mjs file is absent from the inspected package snapshot.
The inspected agent configuration changes are reachable through explicit CLI setup flows, not through an automatic lifecycle hook.

Behavioral surface

Source

ChildProcessEnvironmentVarsFilesystemNetworkShell

Supply chain

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/navigator-share.jsView file

2import path from 'node:path'; L3: import { spawnSync } from 'node:child_process'; L4: import {

High

Child Process

Package source references child process execution.

cli/navigator-share.jsView on unpkg · L2

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/navigator-share.jsView file

2import path from 'node:path'; L3: import { spawnSync } from 'node:child_process'; L4: import {

High

Child Process

Package source references child process execution.

cli/navigator-share.jsView on unpkg · L2

Findings

5 High4 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processcli/navigator-share.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 create-chemx@26.9.16-41.

See all versions of create-chemx for other recorded verdicts.

Review the evidence and your use of create-chemx@26.9.16-41 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 08:09:50.952Z (UTC).

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