registry / nansen-cli / 1.36.2
nansen-cli@1.36.2
AI-agent CLI for Nansen API analytics, DEX swaps, and cross-chain trading
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis is not malicious, but its prompted postinstall installation of AI-agent skills is a lifecycle extension risk under the stated policy. No concrete credential exfiltration, remote payload execution, stealth persistence, or destructive behavior was found.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
Global TTY npm install with affirmative/default skill prompt; later CLI invocation for telemetry/update checks.
Impact
Modifies an AI-agent skill surface only after install-time prompt; no unconsented broad control-surface write or malicious chain was confirmed.
Mechanism
Prompted first-party agent-skill installation plus runtime telemetry/update networking.
AI rationale
This is not malicious, but its prompted postinstall installation of AI-agent skills is a lifecycle extension risk under the stated policy. No concrete credential exfiltration, remote payload execution, stealth persistence, or destructive behavior was found.
Evidence
package.jsonscripts/postinstall.jssrc/update-check.jssrc/telemetry.jsskills/nansen-wallet-keychain-migration/SKILL.md~/.claude/skills/nansen-cli~/.nansen/telemetry-id~/.nansen/update-check.json
Network endpoints3
registry.npmjs.org/nansen-cli/latestbi-data-sources.nansen.ai/events-service-68ifmnpsx2uq7cgab8dw/v2/eventapi.nansen.ai
Decision evidence
public snapshotAI called this Suspicious at 89.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- Global postinstall interactively offers `npx skills add nansen-ai/nansen-cli`.
- Postinstall probes `~/.claude/skills` before skill setup.
- Bundled skills include agent-directed wallet/keychain migration commands.
- Runtime sends opt-out anonymous telemetry.
Evidence against
- Postinstall skips local installs and requires a TTY prompt before invoking npx.
- No shell execution: subprocess calls use fixed commands and `shell:false`.
- No source evidence of secret harvesting or exfiltration.
- API, registry update, and telemetry hosts are package-aligned.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
Source & flagged code
8 flaggedpackage.jsonView file
•scripts.postinstall = node scripts/postinstall.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node scripts/postinstall.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgsrc/wallet.jsView file
359patternName = generic_password
severity = medium
line = 359
matchedText = const pr...ps);
Medium
Findings
3 High7 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighSandbox Evasion Gated Capabilitysrc/update-check.js
HighPrevious Version Dangerous Deltasrc/cli.js
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumSecret Patternsrc/wallet.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
MediumSecret Patternsrc/wallet.js
MediumSecret Patternsrc/wallet.js
LowScripts Present
LowWeak Cryptosrc/api.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to nansen-cli@1.36.2.
See all versions of nansen-cli for other recorded verdicts.
- Review the evidence and your use of nansen-cli@1.36.2 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.