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ach

100 / 100 · Low risk

Fine to try.

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

Analysis of Competing Hypotheses — structured technique for evaluating multiple explanations against evidence. Use when facing ambiguous attribution or multiple plausible scenarios. Prefers graded evidence items from /quality-of-information-check and runs that skill first when handed raw URLs or text. Runs on ungraded evidence when asked, labelled as such, unweighted, and capped at Moderate confidence.

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/'ach' ] || [ -L ~/.agents/skills/'ach' ]; then echo 'A skill folder named ach 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 "$d" checkout --quiet 'eef29d09b60b9abb8fb2097a7e53852b0e92e86b' -- 'skills/ach' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/ach' ~/.agents/skills/'ach' && 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/'ach' ~/.claude/skills/'ach' (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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