registry / @companion-ai/feynman / 0.5.54
@companion-ai/feynman@0.5.54
The open source AI research agent.
AI Security Review
scanned 13d ago · by lpm-firewall-aiSource inspection resolves the install hook to a Node version check and traces the flagged runtime behavior to intended service authentication, explicit project setup, and disclosed package telemetry. The scanner signals do not establish malicious behavior.
Static reason
One or more suspicious static signals were detected.
Trigger
Package installation runs the Node version check; later CLI and project commands run when invoked.
Impact
No confirmed unauthorized file changes, credential disclosure, or other attack impact was found.
Mechanism
The inspected hook checks the runtime version. CLI authentication targets AlphaXiv, project setup creates missing research files, and telemetry sends events to the configured PostHog service.
AI rationale
Source inspection resolves the install hook to a Node version check and traces the flagged runtime behavior to intended service authentication, explicit project setup, and disclosed package telemetry. The scanner signals do not establish malicious behavior.
Decision evidence
public snapshotAI called this Clean at 94.0% confidence as Benign with high false-positive risk.
Evidence for AI clean decision
- The only install hook runs a Node version check and exits when the version is unsupported; it does not perform install-time network or file changes.
- The CLI loads its bundled runtime. AlphaXiv authentication is exposed through the dependency and invoked by the explicit login action; its token request targets the AlphaXiv authentication service.
- The inspected prompt and XML parser dependencies expose their declared library entrypoints; the parser entrypoint exports parsing and validation functions.
- The project initialization behavior is registered as an explicit command. It creates AGENTS.md only when absent and keeps an existing file.
- Telemetry uses the declared PostHog host, describes the collected fields in an interactive first-run notice, supports environment-based opt-out, and sends normalized events and errors. No malicious collection or transfer was identified.
Evidence against
- The package has a preinstall hook, dynamic imports, network activity, and telemetry; inspection traced these to a version check, CLI runtime loading, intended service authentication, and disclosed package telemetry.
Behavioral surface
Source & flagged code
5 flaggedpackage.jsonView file
•scripts.preinstall = node ./scripts/check-node-version.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgbin/feynman.jsView file
23if (compareNodeVersions(parseNodeVersion(process.versions.node), parseNodeVersion(MIN_NODE_VERSION)) < 0) {
L24: const isWindows = process.platform === "win32";
L25: console.error(`feynman requires Node.js ${MIN_NODE_VERSION} or newer (detected ${process.versions.node}).`);
L26: console.error(isWindows
L27: ? "Install a supported Node.js release from https://nodejs.org, or use the standalone installer:"
L28: : `Switch to a supported Node release with \`nvm install ${PREFERRED_NODE_MAJOR} && nvm use ${PREFERRED_NODE_MAJOR}\`, or use the standalone installer:`);
...
L35:
L36: // `--version` needs only package.json; answer it without loading the CLI.
L37: if (process.argv.length === 3 && (process.argv[2] === "--version" || process.argv[2] === "-v")) {
L38: const { readFileSync } = await
High
Sandbox Evasion Gated Capability
Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.
bin/feynman.jsView on unpkg · L23Findings
3 High5 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighSandbox Evasion Gated Capabilitybin/feynman.js
HighSemantic Analysis Limiteddist/cli.js#virtual:normalized:round1
MediumDynamic Requirebin/feynman.js
MediumNetwork
MediumEnvironment Vars
MediumShips Build Helperscripts/install/install-skills.sh
MediumStructural Risk Force Deep Review
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
LowTelemetry
LowUrl Strings
Affected versions and remediation
This report applies to @companion-ai/feynman@0.5.54.
See all versions of @companion-ai/feynman for other recorded verdicts.
- Review the evidence and your use of @companion-ai/feynman@0.5.54 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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