registry / AI-agent control-surface risk / @raditia/craftkit / 1.51.0

@raditia/craftkit@1.51.0

AI coding skills that auto-sync across Claude Code, Cursor, Gemini CLI, and Codex CLI

AI Security Review

scanned 14d ago · by lpm-firewall-ai

The active postinstall chain performs broad agent setup and registers hooks in global configuration without a separate user command. This supports blocking the package for install-time agent control-surface mutation.

Static reason

One or more suspicious static signals were detected.

Trigger

Installing the package through npm invokes its postinstall hook.

Impact

Agent behavior and global configuration can change without a separate setup command; the setup can also fetch and run a remote installer when RTK is missing.

Mechanism

The hook enables setup, synchronizes CraftKit rules, skills, commands, and agents across configured adapters, and installs and registers Claude hooks.

Policy narrative

During npm installation, the postinstall hook starts the sync script with setup enabled. The script synchronizes package content across configured agent adapters, while the Claude adapter copies hooks into the global hooks directory and registers them. If RTK is absent, setup fetches and runs its remote installer. This is an unconsented install-time change to agent control surfaces.

AI rationale

Evidence

package.jsonscripts/postinstall.shsync.shadapters/claude.sh

Network endpoints1

raw.githubusercontent.com/rtk-ai/rtk/refs/heads/master/install.sh

Decision evidence

public snapshot

AI identified this as a dangerous AI-agent capability at 91.0% confidence with low false-positive risk.

Evidence for policy risk

The npm postinstall hook runs the package sync script with setup enabled, without a separate user command.
The setup path downloads and runs an installer when RTK is absent, and the sync runs rule, skill, command, and agent setup for each configured adapter.
The Claude adapter copies package hooks into the user's global Claude hooks directory and wires them into settings.

Evidence against

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystem

Supply chain

HighEntropyStrings

ManifestNo manifest risk signals triggered.

scanned 12 file(s), 63.2 KB of source

Source & flagged code

7 flagged

package.jsonView file

Lines 1-26json

2 "name": "@raditia/craftkit",

3 "version": "1.51.0",

4 "description": "AI coding skills that auto-sync across Claude Code, Cursor, Gemini CLI, and Codex CLI",

5 "scripts": {

6 "postinstall": "bash scripts/postinstall.sh"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L6

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L6

7 },

8 "engines": {

9 "os": ["darwin", "linux"]

High

Suspicious Lifecycle Evidence

The npm postinstall hook runs the package sync script with setup enabled, without a separate user command.

package.jsonView on unpkg · L5

10 },

11 "files": [

12 "rules/",

13 "skills/",

14 "commands/",

15 "agents/",

16 "partials/",

17 "adapters/",

18 "hooks/",

19 "scripts/",

20 "sync.sh",

21 "install.sh",

22 "CHANGELOG.md"

23 ],

24 "keywords": [

25 "claude-code",

26 "cursor",

hooks/craftkit-read-cap.jsView file

Lines 1-33javascript

1#!/usr/bin/env node

2// CraftKit PreToolUse rewrite: an uncapped whole-file read gets a line cap.

3// `rtk hook claude` already rewrites `cat F` to `rtk read F`, but passes no flags at any

4// size, so a 2000-line file still lands whole and is re-sent every turn after. This adds

5// the cap rtk already supports. It rewrites, it never refuses: nothing here can block a

6// call, and a skipped rewrite leaves today's behavior.

7// `-m` and not `-l`: the `-l` filters strip comments and nothing else, measured 10577 to

8// 5506 bytes on craftkit-routing.js and a no-op on markdown, so they delete the `why`

9// comments plus every ponytail:/flag: marker that karpathy-guidelines makes contract.

hooks/craftkit-transcript.jsView file

Lines 4-44javascript

4// once: a disagreement between the two would make one of them fire on the wrong turn,

5// which is indistinguishable from a broken gate.

6// Installed alongside the gates by adapters/claude.sh; required by relative path.

8const crypto = require('crypto');

9const fs =

install.shView file

•path = install.sh kind = build_helper sizeBytes = 1104 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

install.shView on unpkg

hooks/craftkit-platform-rules.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 3

High

Semantic Analysis Limited

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

hooks/craftkit-platform-rules.js#virtual:normalized:round1View on unpkg

Source & flagged code

7 flagged · loading source

package.jsonView file

•scripts.postinstall = bash scripts/postinstall.sh

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

5"scripts": { "postinstall": "bash scripts/postinstall.sh" }, "engines": { "os": [

High

Suspicious Lifecycle Evidence

The npm postinstall hook runs the package sync script with setup enabled, without a separate user command.

package.jsonView on unpkg · L5

•scripts.postinstall = bash scripts/postinstall.sh

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

hooks/craftkit-read-cap.jsView file

Findings

3 High5 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighSemantic Analysis Limitedhooks/craftkit-platform-rules.js#virtual:normalized:round1

HighSuspicious Lifecycle Evidencepackage.json

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requirehooks/craftkit-read-cap.js

MediumEnvironment Vars

MediumShips Build Helperinstall.sh

MediumStructural Risk Force Deep Review

LowScripts Present

LowWeak Cryptohooks/craftkit-transcript.js

LowFilesystem

LowHigh Entropy Strings

Affected versions and remediation

This report applies to @raditia/craftkit@1.51.0.

See all versions of @raditia/craftkit for other recorded verdicts.

Avoid installing @raditia/craftkit@1.51.0. 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: 2026-10-09 10:06:51.977Z (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

Other AI-agent control-surface risk packages

Runtime surface

Behavioral surface

Related packages

Other AI-agent control-surface risk packages

Source & flagged code