Is agent-passport-system-mcp safe to install?

agent-passport-system-mcp was flagged as CRITICAL RISK (risk score 50) with 1 finding detected across 12 files. Review the findings before installing.

What security issues were found in agent-passport-system-mcp?

Sigil detected 1 finding in agent-passport-system-mcp, including patterns related to install_hooks. See the full scan report for details.

Scans/npm/agent-passport-system-mcp

agent-passport-system-mcp

npm

Summary

agent-passport-system-mcp v2.8.7 was classified as CRITICAL RISK with a risk score of 50. Sigil detected 1 finding across 12 files, covering phases including install hooks. Review the findings below before installing this package.

CRITICAL RISK(50)

v2.8.7

20 March 2026, 05:40 UTC

by Sigil Bot

Risk Score

Findings

Files Scanned

Provenance

Registry

https://www.npmjs.com/package/agent-passport-system-mcp/v/2.8.7

Scanned From

https://registry.npmjs.org/agent-passport-system-mcp/-/agent-passport-system-mcp-2.8.7.tgz

Findings by Phase

•

Phase Ordering

Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.

install-npm-postinstall

CRITICAL

npm lifecycle script — runs automatically on install

package/package.json:21

    "prepublishOnly": "npm run build",
    "postinstall": "echo '\\n🔑 Agent Passport MCP installed! Run: npx agent-passport-system-mcp setup\\n   Or for zero-install remote: npx agent-passport-system-mcp setup --remote\\n'",
    "postpublish": "cd ~/aeoess_web && node scripts/propagate.mjs --apply --commit 2>/dev/null || echo 'Propagation skipped (aeoess_web not found)'"

Why was this flagged?

npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.

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