pennyrouter@0.3.69

Install and manage PennyRouter local coding-agent integrations.

AI Security Review

scanned 6d ago · by lpm-firewall-ai

Source inspection found no npm install hook or concrete malicious behavior. The reviewed network and configuration activity is tied to user-run PennyRouter setup and its gateway integration.

Static reason

One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source

Trigger

A user runs the CLI setup flow or later uses a configured PennyRouter integration.

Impact

No unrelated collection, destructive action, or unconsented control-surface change was established.

Mechanism

Setup sends approval-session details to PennyRouter and may link a local Claude login to the configured gateway. The status-line integration uses that gateway and preserves an existing user command.

AI rationale

Source inspection found no npm install hook or concrete malicious behavior. The reviewed network and configuration activity is tied to user-run PennyRouter setup and its gateway integration.

Evidence

src/cli.jssrc/session.jssrc/claude-signin.jssrc/launch.jssrc/statusline.js

Network endpoints2

pennyrouter.comapi.pennyrouter.com

Decision evidence

public snapshot

AI called this Clean at 86.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

The manifest exposes a CLI and lists start and check scripts; the binary delegates to the CLI. No npm install lifecycle hook is declared.
CLI setup creates an authorization session with an operating-system label and selected harness names, using PennyRouter’s app URL by default. The hostname is sent as a key label only in the explicit private-gateway flow.
Claude sign-in reads a local OAuth token and sends it to the configured gateway only when account linking is enabled and the account is not already linked; the CLI invokes this during Claude Code setup.
The required agent-related locations concern local configuration paths, session data, and test fixtures. The launcher configures the Claude status line while preserving an existing user command.
CodeGPT setup prints manual instructions, and the standalone demo server binds to loopback.

Evidence against

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell

Source & flagged code

7 flagged

src/launch.test.jsView file

Lines 1-21javascript

1import assert from "node:assert/strict";

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

3import fs from "node:fs";

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

src/launch.test.jsView on unpkg · L1

4import os from "node:os";

5import path from "node:path";

7import {

8 buildPennyInvocation,

9 claudeDesktopConfigLibraryPath,

10 claudeDesktopCredentialHelperPath,

11 claudeLaunchSettingsPath,

12 claudeUserSkillPath,

13 codexLaunchProfilePath,

14 codexModelCatalogPath,

15 configureClaudeDesktopProfile,

16 createCodexDesktopHome,

17 configurePennyHarness,

18 fileMode,

19 installPennyCompare,

20 installPennyRuntime,

21 isClaudeDesktopRunning,

src/harnesses/codegpt.jsView file

Lines 1-21javascript

1import { spawnSync } from "node:child_process";

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

src/harnesses/codegpt.jsView on unpkg · L1

3export const codeGptHarness = {

4 id: "codegpt",

src/statusline.jsView file

•Runtime or CLI code links a write operation to an explicit external AI-agent control path: tatusline (all lines) |] penny segment (penny / penny (sub) // / penny (byok) / penny off). the wrapped statusline's first line gets the penny suffix; // any further lines (e.g. a context bar) pass through verbatim. // never blocks on the network: reads a per-session cache and refreshes it detached. import { readfilesync, mkdirsync, writefilesync, statsync } from "node:fs"; import { spawn, spawnsync } from "node:child_process"; import { join, basename } from "node:path"; import os from "node:os"; const statedir = join( process.env.xdg_state_home || join(os.homedir(), ".local", "state"), "pennyrouter", ); const cachedir = join(statedir, "statusline-cache"); const titlesessionfile = process.env.pe

High

External Ai Agent Control Surface Mutation

Runtime or CLI source writes behavior-bearing configuration into a user or project AI-agent control surface.

src/statusline.jsView on unpkg

src/launch.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. export function pennydatadir() { if (process.platform === "win32") { return join(process.env.localappdata || process.env.appdata || homedir(), "pennyrouter"); } return join(process.env.xdg_data_home || join(homedir(), ".local", "share"), "pennyrouter"); } export function pennyruntimedir() { return join(pennydatadir(), "runtime"); } export function pennycomparedir() { return join(pennydatadir(), "compare"); } export function pennybindir() { if (process.platform === "win32") return join(pennydatadir(), "bin"); return join(homedir(), ".local", "bin"); } export function pennyshimpath() { return join(pennybindir(), process.platform === "win32" ? "penny.cmd" :

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.

src/launch.jsView on unpkg

standalone/web-demo/local-wire.pyView file

•path = standalone/web-demo/local-wire.py kind = build_helper sizeBytes = 2918 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

standalone/web-demo/local-wire.pyView on unpkg

src/claude-signin.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.

src/claude-signin.js#virtual:normalized:round1View on unpkg

standalone/web-demo/server.mjsView file

•matchType = previous_version_dangerous_delta matchedPackage = pennyrouter@0.3.64 matchedIdentity = npm:cGVubnlyb3V0ZXI:0.3.64 similarity = 0.877 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.

standalone/web-demo/server.mjsView on unpkg

Source & flagged code

7 flagged · loading source

src/launch.test.jsView file

1import assert from "node:assert/strict"; L2: import { spawnSync } from "node:child_process"; L3: import fs from "node:fs"; ... L56: async function main() { L57: if (!(["darwin", "linux"].includes(process.platform))) { L58: console.log("launch.test.js: skipped on unsupported platform"); ... L62: const root = fs.mkdtempSync(path.join(os.tmpdir(), "pr-launch-test-")); L63: const previous = Object.fromEntries(ENV_KEYS.map((key) => [key, process.env[key]])); L64: const home = path.join(root, "home"); ... L70: }, null, 2)}\n`; L71: const nativeCodex = 'model = "native-model"\n\nmodel_provider = "pennyrouter"\n\n[model_providers.pennyrouter]\nname = "PennyRouter"\nbase_url = "http://localhost:8400/v1"\n'; L72: fs.writeFileSync(path.join(home, ".claude", "settings.json"), nativeClaude);

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

src/launch.test.jsView on unpkg · L1

src/harnesses/codegpt.jsView file

1import { spawnSync } from "node:child_process"; L2: ... L52: L53: // The record carries the base URL this install actually wrote, so a private/self-hosted L54: // gateway is named here instead of the hosted default the user never configured. ... L58: console.log(" Open CodeGPT settings and remove or replace the PennyRouter provider:"); L59: console.log(` - Base URL: ${record?.changes?.base_url || "https://api.pennyrouter.com/v1"}`); L60: console.log(" - API Key: pr-..."); ... L66: const commands = L67: process.platform === "darwin" L68: ? [["pbcopy"]] L69: : process.platform === "win32"

Findings

5 High5 Medium4 Low

HighSandbox Evasion Gated Capabilitysrc/harnesses/codegpt.js

HighExternal Ai Agent Control Surface Mutationsrc/statusline.js

HighTrigger Reachable External Ai Agent Control Surface Mutationsrc/launch.js

HighSemantic Analysis Limitedsrc/claude-signin.js#virtual:normalized:round1

HighPrevious Version Dangerous Deltastandalone/web-demo/server.mjs

MediumNetwork

MediumEnvironment Vars

MediumInstall Persistencesrc/launch.test.js

MediumShips Build Helperstandalone/web-demo/local-wire.py

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

Affected versions and remediation

This report applies to pennyrouter@0.3.69.

See all versions of pennyrouter for other recorded verdicts.

Review the evidence and your use of pennyrouter@0.3.69 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: 2026-10-16 22:54:33.596Z (UTC).

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