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lookup-greynoise

95 / 100 · Low risk

Fine to try. Some of what it can do is expected: a security skill usually runs scanners and checks websites.

By Liberty91LTD/cti-skills (GitHub) · security · 38 stars · scanned at commit eef29d0

Use when you need to classify an IP as internet scanner noise vs. targeted activity. Returns noise/riot flags, classification (benign/malicious/unknown), actor name if known. IP-only. Commonly invoked by /ip-investigation to filter out mass-scanning noise. Retrieval only.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'lookup-greynoise' ] || [ -L ~/.agents/skills/'lookup-greynoise' ]; then echo 'A skill folder named lookup-greynoise already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/Liberty91LTD/cti-skills' "$d" && git -C "$d" checkout --quiet 'eef29d09b60b9abb8fb2097a7e53852b0e92e86b' -- 'skills/lookup-greynoise' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/lookup-greynoise' ~/.agents/skills/'lookup-greynoise' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'lookup-greynoise' ~/.claude/skills/'lookup-greynoise' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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