registry / @companion-ai/feynman / 0.3.31
@companion-ai/feynman@0.3.31
Research-first CLI agent built on Pi and alphaXiv
AI Security Review
scanned 3mo ago · by lpm-firewall-aiNot malicious under the install-control policy because preinstall is non-mutating and risky actions require running the package CLI. Warn because runtime rewrites agent-platform dependencies and enables outbound telemetry by default.
Static reason
High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source
Trigger
User runs the feynman CLI after installation.
Impact
Modifies Feynman/Pi runtime state and sends operational telemetry; no confirmed credential or data exfiltration chain.
Mechanism
Runtime Pi dependency patching, managed workspace extraction, and default telemetry.
AI rationale
Not malicious under the install-control policy because preinstall is non-mutating and risky actions require running the package CLI. Warn because runtime rewrites agent-platform dependencies and enables outbound telemetry by default.
Evidence
package.jsonscripts/check-node-version.mjsbin/feynman.jsscripts/patch-embedded-pi.mjsdist/pi/runtime-patches.jsdist/telemetry/posthog.js.feynman/runtime-workspace.tgz
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
- Runtime CLI imports a script that patches embedded Pi.
- Runtime patcher rewrites Pi packages in the Feynman agent directories.
- Runtime archive restore deletes and replaces its packaged workspace.
- CLI enables PostHog/OTLP telemetry by default to us.i.posthog.com.
Evidence against
- The only preinstall hook checks the Node version; it does not mutate files or contact a network.
- No source evidence of credential harvesting, secret exfiltration, remote payload execution, or destructive behavior outside Feynman-managed paths.
- The shipped runtime archive matched its packaged SHA-256 checksum during inspection.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket
HighEntropyStringsMinifiedPossibleObfuscation
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@0.3.31.
See all versions of @companion-ai/feynman for other recorded verdicts.
- Review the evidence and your use of @companion-ai/feynman@0.3.31 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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