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investigate-domain

100 / 100 · Low risk

Fine to try.

By PortSwigger/http-terminator (GitHub) · coding · 127 stars · scanned at commit 874682c

Investigate, explore, replicate and debug a strange behaviour detected on a domain, and identify if there is a security risk.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

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

if [ -e ~/.agents/skills/'investigate-domain' ] || [ -L ~/.agents/skills/'investigate-domain' ]; then echo 'A skill folder named investigate-domain already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/PortSwigger/http-terminator' "$d" && git -C "$d" checkout --quiet '874682cdbdd176099f5a1ddadd647fe1e66b5940' -- 'investigator/.claude/skills/investigate-domain' && mkdir -p ~/.agents/skills && cp -R "$d"/'investigator/.claude/skills/investigate-domain' ~/.agents/skills/'investigate-domain' && 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/'investigate-domain' ~/.claude/skills/'investigate-domain' (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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