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whose-number-is-this

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 UseOSINT/Skills (GitHub) · security · 61 stars · scanned at commit 06243a5

Investigate a phone number — E.164 normalisation with libphonenumber, phoneinfoga scanning, carrier and line-type identification, VoIP and burner detection, messaging-app registration checks, and reverse-lookup and caller-ID sources. Use for phone OSINT and reverse phone lookup, "who owns this number", identifying a burner or VoIP number, or checking whether a number is registered on WhatsApp, Telegram or Signal. Applies to vishing and business email compromise investigation, verifying a counte…

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/'whose-number-is-this' ] || [ -L ~/.agents/skills/'whose-number-is-this' ]; then echo 'A skill folder named whose-number-is-this already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/UseOSINT/Skills' "$d" && git -C "$d" checkout --quiet '06243a5620b0c9c97502edd4ee9e31995a3bdccd' -- 'skills/whose-number-is-this' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/whose-number-is-this' ~/.agents/skills/'whose-number-is-this' && 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/'whose-number-is-this' ~/.claude/skills/'whose-number-is-this' (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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