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Agent Browser

A fast Rust-based headless browser automation CLI with Node.js fallback that enables AI agents to navigate, click, type, and snapshot pages via structured commands.

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SKILL.md
Quality
Evals
Security

Security

2 findings — 1 critical severity, 1 medium severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.

Critical

E005: Suspicious download URL detected in skill instructions

What this means

Detected a suspicious URL in the skill instructions that could lead the agent to download and execute malicious scripts or binaries. This includes links to executables from untrusted sources, typosquatting of official packages, URL shorteners that obscure the destination, and personal file hosting services.

Why it was flagged

Suspicious download URL detected (high risk: 0.70). Neither URL points to an obvious direct executable download, and the GitHub repo (vercel-labs/agent-browser) is a recognizable source (lower risk), but star-swap.com is an unaudited third‑party site and the skill’s instructions to connect a CLI to your real Chrome profile via remote debugging or to install/run an unvetted global package can expose session cookies and allow arbitrary browser automation, so together they present a moderate-to-high risk.

Report incorrect finding
Medium

W011: Third-party content exposure detected (indirect prompt injection risk)

What this means

The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.

Why it was flagged

Third-party content exposure detected (high risk: 0.90). The skill's SKILL.md instructs the agent to open arbitrary URLs (agent-browser open <url>) and to observe pages via snapshot --json as part of the "Optimal AI Workflow" (examples include opening external sites like "https://star-swap.com"), so the agent reads and acts on untrusted public web content that could contain instructions.

Repository
am-will/codex-skills
Audited
Security analysis
Snyk

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