registry / @jenga-ai/agent / 3.1.0

@jenga-ai/agent@3.1.0

⚠ Under review

An agentic development workflow for Claude Code, Copilot, and Codex — with a persistent Epic/Story/Task board, an isolated git worktree per task, and a separate tester agent that runs your test suite before anything is marked done.

Static Scan Results

scanned 25d ago · by rust-scanner

Static analysis flagged 16 finding(s) at 97.0% confidence. This version is warn-only unless an AI or security-team review confirms malicious behavior.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Decision evidence

public snapshot

Behavioral surface

Source

ChildProcessEnvironmentVarsFilesystemShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 21 file(s), 146 KB of source, external domains: github.com

Source & flagged code

10 flagged

package.jsonView file

Lines 1-36json

2 "name": "@jenga-ai/agent",

3 "version": "3.1.0",

4 "description": "An agentic development workflow for Claude Code, Copilot, and Codex — with a persistent Epic/Story/Task board, an isolated git worktree per task, and a separate tester agent that runs your test suite before anything is marked done.",

5 "type": "module",

6 "publishConfig": {

7 "access": "public"

8 },

9 "bin": {

10 "jenga": "bin/jenga.js"

11 },

12 "engines": {

13 "node": ">=14.13.1"

14 },

15 "scripts": {

16 "postinstall": "node scripts/postinstall.js",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L16

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L16

17 "generate:legacy-paths": "node scripts/generate-legacy-shipped-paths.js",

18 "test": "bats tests/*.bats",

19 "validate:npm-metadata": "bash scripts/validate_npm_metadata.sh",

20 "ui:dev": "npm run ui:dev --prefix project/app --",

21 "ui:build": "npm run ui:build --prefix project/app --",

22 "api:start": "npm run api:start --prefix project/app --",

23 "api:dev": "npm run api:dev --prefix project/app --",

24 "dashboard:start": "npm run dashboard:start --prefix project/app --",

25 "dashboard:open": "npm run dashboard:open --prefix project/app --"

26 },

27 "files": [

28 "skills/",

29 "agents/",

30 "hooks/",

31 "scripts/",

32 "templates/",

33 "bin/",

34 "lib/",

35 "mcp/execute-ticket/*.js",

36 "mcp/execute-ticket/package.json",

scripts/postinstall.jsView file

Lines 1-26javascript

1#!/usr/bin/env node

2/**

3 * postinstall.js — Jenga AI consumer installation hook

4 *

5 * Runs automatically when a consumer project installs jenga-agent via npm.

6 * Copies the discovery-bound dirs — `skills/` and `agents/` — into BOTH

7 * `<consumer>/.claude/` (where Claude Code looks) and `<consumer>/.agents/`

8 * (where non-Claude agents like Copilot / custom look, per the framework's

Critical

Ai Agent Control Hijack

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

scripts/postinstall.jsView on unpkg · L6

lib/commands/init.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. const __dirname = dirname(fileurltopath(import.meta.url)); const package_root = join(__dirname, "..", ".."); async function prompt(rl, question, defaultvalue) { return new promise(resolve => { const hint = defaultvalue !== undefined ? ` (default: ${defaultvalue})` : ""; rl.question(`${question}${hint}: `, answer => { resolve(answer.trim() || string(defaultvalue ?? "")); }); }); } export async function runinit(args, projectroot = process.cwd()) { const configpath = join(projectroot, config_file); let existing = {}; if (existssync(configpath)) { try { existing = json.parse(readfilesyn

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.

lib/commands/init.jsView on unpkg

hooks/on_session_end.shView file

•path = hooks/on_session_end.sh kind = build_helper sizeBytes = 20756 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

hooks/on_session_end.shView on unpkg

scripts/generate-legacy-shipped-paths.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.

scripts/generate-legacy-shipped-paths.js#virtual:normalized:round1View on unpkg

mcp/training_runner/index.jsView file

•matchType = normalized_sha256 matchedPackage = @jenga-ai/agent@3.1.1 matchedPath = mcp/training_runner/index.js matchedIdentity = npm:QGplbmdhLWFpL2FnZW50:3.1.1 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.

mcp/training_runner/index.jsView on unpkg

skills/j-publish/scripts/npm_stage_pipeline.shView file

•matchType = normalized_sha256 matchedPackage = @jenga-ai/agent@3.1.1 matchedPath = skills/j-publish/scripts/npm[redacted] matchedIdentity = npm:QGplbmdhLWFpL2FnZW50:3.1.1 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.

skills/j-publish/scripts/npm_stage_pipeline.shView on unpkg

•matchType = previous_version_dangerous_delta matchedPackage = @jenga-ai/agent@3.2.0 matchedIdentity = npm:QGplbmdhLWFpL2FnZW50:3.2.0 similarity = 0.937 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

skills/j-publish/scripts/npm_stage_pipeline.shView on unpkg

skills/j-uncharted/scripts/import-source.shView file

•matchType = normalized_sha256 matchedPackage = @jenga-ai/agent@3.1.1 matchedPath = skills/j-uncharted/scripts/import-source.sh matchedIdentity = npm:QGplbmdhLWFpL2FnZW50:3.1.1 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.

skills/j-uncharted/scripts/import-source.shView on unpkg

Source & flagged code

10 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

scripts/postinstall.jsView file

6* Copies the discovery-bound dirs — `skills/` and `agents/` — into BOTH L7: * `<consumer>/.claude/` (where Claude Code looks) and `<consumer>/.agents/` L8: * (where non-Claude agents like Copilot / custom look, per the framework's ... L40: * Location : one manifest per destination root, inside that root — L41: * <consumer>/.agents/.jenga-postinstall-manifest.json L42: * <consumer>/.claude/.jenga-postinstall-manifest.json L43: * Keeping it inside the root it describes means it travels with that ... L50: * "generated_at": "<ISO 8601>", L51: * "dest_root": ".agents", L52: * "paths": ["agents/developer.md", "skills/do/SKILL.md"] ... L203: L204: // Discovery-bound dirs get mirror

Critical

Ai Agent Control Hijack

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

scripts/postinstall.jsView on unpkg · L6

lib/commands/init.jsView file

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.

lib/commands/init.jsView on unpkg

hooks/on_session_end.shView file

•path = hooks/on_session_end.sh kind = build_helper sizeBytes = 20756 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

hooks/on_session_end.shView on unpkg

scripts/generate-legacy-shipped-paths.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.

scripts/generate-legacy-shipped-paths.js#virtual:normalized:round1View on unpkg

mcp/training_runner/index.jsView file

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

mcp/training_runner/index.jsView on unpkg

skills/j-publish/scripts/npm_stage_pipeline.shView file

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

skills/j-publish/scripts/npm_stage_pipeline.shView on unpkg

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

skills/j-publish/scripts/npm_stage_pipeline.shView on unpkg

skills/j-uncharted/scripts/import-source.shView file

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

skills/j-uncharted/scripts/import-source.shView on unpkg

Findings

1 Critical7 High4 Medium4 Low

CriticalAi Agent Control Hijackscripts/postinstall.js

HighInstall Time Lifecycle Scriptspackage.json

HighTrigger Reachable External Ai Agent Control Surface Mutationlib/commands/init.js

HighSemantic Analysis Limitedscripts/generate-legacy-shipped-paths.js#virtual:normalized:round1

HighKnown Malware Source Similaritymcp/training_runner/index.js

HighKnown Malware Source Similarityskills/j-publish/scripts/npm_stage_pipeline.sh

HighKnown Malware Source Similarityskills/j-uncharted/scripts/import-source.sh

HighPrevious Version Dangerous Deltaskills/j-publish/scripts/npm_stage_pipeline.sh

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumEnvironment Vars

MediumShips Build Helperhooks/on_session_end.sh

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to @jenga-ai/agent@3.1.0.

See version security history for other recorded verdicts.

Review the evidence and your use of @jenga-ai/agent@3.1.0 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: 2026-09-13 04:31:26.686Z (UTC).