registry / AI-agent control-surface risk / @chem-x/starter-kit / 26.9.23-1269

@chem-x/starter-kit@26.9.23-1269

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

AI Security Review

scanned 11d ago · by lpm-firewall-ai

The manifest and source confirm an unconsented postinstall mutation of project and global AI-agent control surfaces. Under the install-time control-surface policy, this warrants blocking even though the registered server is package-aligned and no credential theft or remote payload execution was identified.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

Installing the package through npm in a consumer project.

Impact

Agent clients may load and expose the package's MCP tools automatically.

Mechanism

The hook calls the MCP installer, which writes a Chemical X server entry into project-level agent configuration and also attempts global Antigravity configuration.

Policy narrative

During npm installation, the postinstall hook invokes the MCP installer for the consumer directory without asking first. The installer registers the package's MCP server in supported agent configuration files, enabling agent tools as a side effect of package installation.

AI rationale

Evidence

package.jsoncli/postinstall.jscli/mcp/installer.js.cursor/mcp.json.vscode/mcp.json~/.gemini/config/mcp_config.json

Decision evidence

public snapshot

AI identified this as a dangerous AI-agent capability at 96.0% confidence with low false-positive risk.

Evidence for policy risk

package.json runs cli/postinstall.js from its postinstall hook.
The postinstall hook targets the consumer directory and calls installAllMcpConfigs without a consent prompt.
The installer writes a Chemical X MCP server entry into the consumer's Cursor MCP configuration; the same install routine also configures VS Code and Antigravity.

Evidence against

The configured MCP server is package-aligned and intended to expose Chemical X tools; the inspected source shows no credential forwarding or remote payload execution.

Behavioral surface

Source

ChildProcessEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 274 file(s), 1.41 MB of source, external domains: api.github.com, chemicalx.xophz.com, example.com, fallback.com, github.com, img.shields.io, mycompassconsulting.com, reports.chemicalx.xophz.com, www.w3.org

Source & flagged code

10 flagged

package.jsonView file

Lines 31-71json

31 "docs",

32 "assets"

33 ],

34 "exports": {

35 ".": "./cli/index.js",

36 "./audit": "./cli/audit.js",

37 "./build": "./cli/build.js",

38 "./search": "./cli/search.js",

39 "./mcp": "./cli/mcp/index.js",

40 "./reader": "./cli/reader.js",

41 "./patcher": "./cli/patcher.js",

42 "./errors": "./cli/errors/index.js"

43 },

44 "scripts": {

45 "chemx": "node cli/index.js",

46 "test": "node --test cli/audit/*.spec.js cli/mcp/*.spec.js cli/build/*.spec.js cli/team/*.spec.js cli/errors/*.spec.js cli/*.spec.js",

47 "check:frameworks": "node scripts/check-framework-generation.mjs",

48 "prepublishOnly": "node scripts/check-framework-generation.mjs",

49 "typecheck": "tsc --noEmit",

50 "publish:both": "node scripts/publish-both.mjs",

51 "postinstall": "node cli/postinstall.js",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L51

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L51

52 "chemx:mcp": "chemx mcp",

53 "chemx:verify": "chemx verify",

54 "chemx:test": "chemx test",

55 "chemx:typecheck": "chemx typecheck"

56 },

57 "dependencies": {

58 "@babel/parser": "^7.29.8",

59 "@babel/traverse": "^7.29.8",

60 "@babel/types": "^7.29.8",

61 "react": "^18.3.1",

62 "react-dom": "^18.3.1"

63 },

64 "devDependencies": {

65 "@types/babel__traverse": "^7.28.0",

66 "@types/node": "^22.20.2",

67 "@types/react": "^18.3.31",

68 "@types/react-dom": "^18.3.7",

69 "chemx": "26.9.20-408",

70 "typescript": "^5.9.3"

71 }

cli/errors/errors.spec.jsView file

27patternName = github_pat severity = critical line = 27

Critical

Critical Secret

Package contains a critical-looking secret pattern.

cli/errors/errors.spec.jsView on unpkg · L27

27patternName = github_pat severity = critical line = 27

Critical

Secret Pattern

GitHub personal access token in cli/errors/errors.spec.js

cli/errors/errors.spec.jsView on unpkg · L27

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 = /

cli/build/executor.jsView file

11const child = spawn(command, { L12: shell: true, L13: cwd,

High

Shell

Package source references shell execution.

cli/build/executor.jsView on unpkg · L11

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/mcp/installer.jsView file

Lines 1-21javascript

1import fs from 'node:fs';

2import path from 'node:path';

3import os from 'node:os';

4import { syncAntigravityMcpSchemas } from './antigravity.js';

cli/pillars-wizard.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. st pick = usegum ? gumchoose(choices, 'select architectural pillars configuration') : await promptquestion('select pillars: [1=recommended, 2=strict, 3=custom, 4=minimal, 5=none] (default: 1): '); if (pick && (pick.startswith('2.') || pick === '2')) { selectedpresetkey = 'strict'; selectedpillarids = [...pillar_presets.strict.pillars]; } else if (pick && (pick.startswith('3.') || pick === '3')) { selectedpresetkey = 'custom'; for (const pillar of pillars) { const defaultchoice = pillar_presets.recommended.pillars.includes(pillar.id) ? 'y/n' : 'y/n'; const isdefaultyes = defaultchoice === 'y/n'; const answer = a

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/pillars-wizard.jsView on unpkg

scripts/pre-commit.shView file

•path = scripts/pre-commit.sh kind = build_helper sizeBytes = 4925 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

scripts/pre-commit.shView on unpkg

Source & flagged code

10 flagged · loading source

package.jsonView file

•scripts.postinstall = node cli/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node cli/postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

cli/errors/errors.spec.jsView file

27patternName = github_pat severity = critical line = 27

Critical

Critical Secret

Package contains a critical-looking secret pattern.

cli/errors/errors.spec.jsView on unpkg · L27

Findings

3 Critical5 High5 Medium5 Low

CriticalCritical Secretcli/errors/errors.spec.js

CriticalAi Agent Control Hijackcli/mcp/installer.js

CriticalSecret Patterncli/errors/errors.spec.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processcli/audit-preflight-git.js

HighShellcli/build/executor.js

HighSame File Env Network Executioncli/license.js

HighTrigger Reachable External Ai Agent Control Surface Mutationcli/pillars-wizard.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumShips Build Helperscripts/pre-commit.sh

Affected versions and remediation

This report applies to @chem-x/starter-kit@26.9.23-1269.

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

Avoid installing @chem-x/starter-kit@26.9.23-1269. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-10-12 06:00:26.523Z (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

More from @chem-x

Other AI-agent control-surface risk packages

Behavioral surface

Related packages

More from @chem-x

Other AI-agent control-surface risk packages

Source & flagged code