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rubber-duck

100 / 100 · Low risk

Fine to try.

By kirodotdev/KiroCrew (GitHub) · design · 4,889 stars · scanned at commit f2c5c50

Adversarial "rubber duck" review that turns explaining-out-loud into a hallucination check. The main session is the PRESENTER (it did the work — a design doc, investigation, or analysis — and holds the real reasoning) and reconstructs the topic to a LISTENER — a spawned subagent pinned to a DIFFERENT-vendor model that has NOT seen the reasoning and interrogates it adversarially, hunting inconsistencies, gaps, unsupported magnitudes, and claims stated as fact but actually inferred. Goal — artifa…

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/'rubber-duck' ] || [ -L ~/.agents/skills/'rubber-duck' ]; then echo 'A skill folder named rubber-duck already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/kirodotdev/KiroCrew' "$d" && git -C "$d" checkout --quiet 'f2c5c50d602f1e6c2059a407b3a0c6fca6db44da' -- 'skills/rubber-duck' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/rubber-duck' ~/.agents/skills/'rubber-duck' && 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/'rubber-duck' ~/.claude/skills/'rubber-duck' (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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