Is snyk/agent-scan safe to install?

snyk/agent-scan was flagged as CRITICAL RISK (risk score 637) with 47 findings detected across 364 files. Review the findings before installing.

What security issues were found in snyk/agent-scan?

Sigil detected 47 findings in snyk/agent-scan, including patterns related to install_hooks, provenance, network_exfil, code_patterns. See the full scan report for details.

Scans/github/snyk/agent-scan

snyk/agent-scan

github

Summary

snyk/agent-scan v2026-03-19 was classified as CRITICAL RISK with a risk score of 637. Sigil detected 47 findings across 364 files, covering phases including install hooks, provenance, network exfiltration, code patterns. Review the findings below before installing this package.

Package description: Security scanner for AI agents, MCP servers and agent skills.

CRITICAL RISK(637)

v2026-03-19

20 March 2026, 00:41 UTC

by Sigil Bot

Risk Score

637

Findings

Files Scanned

364

Provenance

Registry

https://github.com/snyk/agent-scan

Repository

https://github.com/snyk/agent-scan

Scanned From

https://github.com/snyk/agent-scan.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-makefile-curl

HIGH

Makefile/script pipes remote content to shell

repo/.circleci/config.yml:21

          name: Update uv
          command: curl -LsSf https://astral.sh/uv/install.sh | sh
      - prodsec/security_scans:

Why was this flagged?

A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.

install-pip-setup-exec

CRITICAL

setup.py executes code at install time

repo/tests/skills/algorithmic-art/templates/generator_template.js:53


function setup() {
    createCanvas(800, 800);

Why was this flagged?

This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.

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