123Ergo

Check URL Safety — Security skill for Claude Code

Security community

Proactively check URLs for security and quality signals using Unphurl before following, recommending, or outputting them.

How to install Check URL Safety

Installs to ~/.claude/skills/123ergo-unphurl-mcp-check-url-safety/SKILL.md

Terminal

mkdir -p ~/.claude/skills/123ergo-unphurl-mcp-check-url-safety && curl -fsSL https://raw.githubusercontent.com/123Ergo/unphurl-mcp/HEAD/skills/check-url-safety.md -o ~/.claude/skills/123ergo-unphurl-mcp-check-url-safety/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What Check URL Safety does

name: check-url-safety description: Proactively check URLs for security and quality signals using Unphurl before following, recommending, or outputting them.

Before following, recommending, or outputting any URL that isn't from a well-known domain (e.g. google.com, github.com, amazon.com), use the Unphurl MCP tools to check it first.

When to check

A URL appears in conversation and you're about to follow it, recommend it, or include it in output
A user asks you to visit, open, o

Alternatives in Security

Portaljs Check Data Quality — Audit a local or remote tabular file (CSV/TSV) for common data quality issues 2.3k ★
Engage.Init — Initialize a new security engagement following the Kill Chain workflow 348 ★
SEO Audit Skill — English · 中文可复用的单页面 SEO 审计 Agent Skill 235 ★