registry / @companion-ai/feynman / 0.3.25
@companion-ai/feynman@0.3.25
Research-first CLI agent built on Pi and alphaXiv
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThe preinstall hook is a Node-version gate only, so the scanner’s lifecycle alert is not proof of malware. User-invoked runtime patching warrants a warning because it changes managed agent dependencies, but the observed scope does not meet the block threshold.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
User runs the feynman CLI.
Impact
Managed agent-runtime behavior can persist within Feynman-owned paths; no concrete malicious payload or exfiltration chain was established.
Mechanism
Runtime rewriting of managed Pi dependencies plus optional telemetry.
AI rationale
The preinstall hook is a Node-version gate only, so the scanner’s lifecycle alert is not proof of malware. User-invoked runtime patching warrants a warning because it changes managed agent dependencies, but the observed scope does not meet the block threshold.
Evidence
package.jsonscripts/check-node-version.mjsbin/feynman.jsdist/pi/runtime-patches.jsdist/telemetry/posthog.jsnode_modules/@earendil-works/pi-coding-agent/package.json.feynman/npm/node_modules
Network endpoints1
us.i.posthog.com
Decision evidence
public snapshotAI called this Suspicious at 86.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- CLI startup rewrites bundled Pi runtime sources.
- Runtime patcher targets package-local and Feynman-managed node_modules.
- Telemetry defaults to PostHog when the user runs the CLI.
Evidence against
- The sole preinstall hook only checks the Node version and does not write files or fetch data.
- Rewrites occur after explicit CLI invocation and target its bundled/Feynman-managed runtime.
- No source evidence of credential harvesting, destructive behavior, or install-time foreign agent-control mutation.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket
HighEntropyStringsMinifiedPossibleObfuscationProtestwareTelemetryUrlStrings
Source & flagged code
14 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 unpkgdist/workbench-web/assets/3Dmol-D4OPhBxL.jsView file
1692`+p[g],g++;n.push(e)}else n.push(p[g]);else n.push(r.trim());g++}else if(p[g].substring(0,5)===`loop_`){g++;let t=[];for(;p[g]===``||p[g][0]===`_`;){if(p[g]!==``){let n=p[g].split(...
L1693: `);continue}else break}return n}},"./src/parsers/PDB.ts"(e,t,n){n.r(t),n.d(t,{PDB:()=>i});var r=n(`./src/parsers/utils/getSinglePDB.ts`);function i(e,t){t||={};var n=[],i={};n.mode...
Low
Eval
Package source references a known benign dynamic code generation pattern.
dist/workbench-web/assets/3Dmol-D4OPhBxL.jsView on unpkg · L1692bin/feynman.jsView file
Findings
1 Critical6 High9 Medium7 Low
CriticalTrojan Source Unicodedist/workbench-web/assets/index-Dn1dPtCn.js
HighInstall Time Lifecycle Scriptspackage.json
HighSandbox Evasion Gated Capabilitybin/feynman.js
HighShips High Entropy Blob.feynman/runtime-workspace.tgz
HighPayload In Excluded Dir.feynman/runtime-workspace.tgz
HighSemantic Analysis Limiteddist/workbench-web/assets/dist-7ytHgirA.js
HighPrevious Version Dangerous Deltascripts/verify-installed-runtime.mjs
MediumDynamic Requirebin/feynman.js
MediumNetwork
MediumEnvironment Vars
MediumProtestware
MediumShips Wasm Moduledist/workbench-web/assets/RDKit_minimal-tnscgqxm.wasm
Affected versions and remediation
This report applies to @companion-ai/feynman@0.3.25.
See all versions of @companion-ai/feynman for other recorded verdicts.
- Review the evidence and your use of @companion-ai/feynman@0.3.25 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.