droid@0.206.0
Factory Droid CLI - AI-powered software engineering agent
AI Security Review
scanned 1mo ago · by lpm-firewall-aiThe postinstall script is a package-aligned binary installer for the Factory Droid CLI: it fetches the matching @factory platform package from the npm registry, writes it into this package, and links its own shim. Credential use is limited to npm registry auth, and no unconsented agent-config, exfiltration, or self-dependency lifecycle chain is present.
Static reason
One or more suspicious static signals were detected.
Trigger
npm postinstall runs node install.js; the droid bin runs only when the user invokes the command.
Impact
The consumer project gains the droid CLI. No foreign agent control surface, credential export, or destructive mutation was identified.
Mechanism
The script locates or downloads the same-version platform binary, writes it under the package bin directory, and links the local shim. The command shim then spawns that binary with the user's arguments.
AI rationale
The postinstall script is a package-aligned binary installer for the Factory Droid CLI: it fetches the matching @factory platform package from the npm registry, writes it into this package, and links its own shim. Credential use is limited to npm registry auth, and no unconsented agent-config, exfiltration, or self-dependency lifecycle chain is present.
Decision evidence
public snapshotAI called this Clean at 86.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- postinstall only runs node install.js to install the Factory Droid CLI binary shim.
- Optional dependencies are same-version @factory/cli platform packages, not a nested release of droid.
- If the platform package is missing, install.js downloads that package tarball from registry.npmjs.org and writes the binary under this package bin directory.
- NPM_TOKEN is attached only when the request hostname includes npmjs.org.
- On Unix the script hard-links or symlinks its own bin/droid shim to that binary; the PATH helper only prints a warning.
- The droid command is a user-invoked shim that spawns the resolved local platform binary.
Evidence against
- The fallback download follows HTTP redirects and then writes and can later execute a native binary, which is the documented CLI install path rather than a foreign agent-config write.
- No code reads secrets for exfiltration, mutates other AI-agent configs, or depends on another release of droid.
Behavioral surface
ChildProcessEnvironmentVarsFilesystem
Source & flagged code
6 flaggedpackage.jsonView file
•scripts.postinstall = node install.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg9scripts.postinstall = node install.js
Install-time code downloads an unverified remote native executable, stages it locally, activates an executable path, and exposes it to process execution.
L9: *
L10: * Based on esbuild's approach: https://github.com/evanw/esbuild/pull/1621
L11: * and Sentry's guide: https://sentry.engineering/blog/publishing-binaries-on-npm
L12: *
...
L19: const path = require('path');
L20: const https = require('https');
L21: const zlib = require('zlib');
...
L27: getBinaryName,
L28: getBinaryPath,
L29: detectAVX2Support,
...
L50:
L51: function validateBinaryVersion(binaryPath) {
High
Unverified Remote Native Payload Install
Install-time source downloads a native archive from a fixed external host without transport verification, extracts it, and installs an executable payload.
package.jsonView on unpkg · L9•scripts.postinstall = node install.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
Findings
5 High4 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighChild Processinstall.js
HighSame File Env Network Executioninstall.js#virtual:normalized:round1
HighUnverified Remote Native Payload Installpackage.json
HighSemantic Analysis Limitedinstall.js#virtual:normalized:round1
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
LowNo License
Affected versions and remediation
This report applies to droid@0.206.0.
See all versions of droid for other recorded verdicts.
- Review the evidence and your use of droid@0.206.0 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: .
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