Is aeoess/agent-passport-mcp safe to install?

aeoess/agent-passport-mcp was flagged as CRITICAL RISK (risk score 54) with 3 findings detected across 21 files. Review the findings before installing.

What security issues were found in aeoess/agent-passport-mcp?

Sigil detected 3 findings in aeoess/agent-passport-mcp, including patterns related to provenance, install_hooks. See the full scan report for details.

Scans/github/aeoess/agent-passport-mcp

aeoess/agent-passport-mcp

github

Summary

aeoess/agent-passport-mcp v2026-03-20 was classified as CRITICAL RISK with a risk score of 54. Sigil detected 3 findings across 21 files, covering phases including provenance, install hooks. Review the findings below before installing this package.

Package description: MCP server for the Agent Passport System. 61 tools across 35 modules. Any MCP client gets full protocol access. npx agent-passport-system-mcp

CRITICAL RISK(54)

v2026-03-20

21 March 2026, 01:07 UTC

by Sigil Bot

Risk Score

Findings

Files Scanned

Provenance

Registry

https://github.com/aeoess/agent-passport-mcp

Repository

https://github.com/aeoess/agent-passport-mcp

Scanned From

https://github.com/aeoess/agent-passport-mcp.git

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

repo/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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