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lumen-abtest

100 / 100 · Low risk

Fine to try.

By jeremylongshore/tons-of-skills-marketplace (GitHub) · coding · 2,921 stars · scanned at commit 8dc06f0

A/B test design — produce an experiment spec with hypothesis, primary metric, MDE, sample size, run time, and decision rule. Also determines when NOT to A/B test and what to do instead. Use when asked to "design an A/B test", "should we test this", "experiment design", "how do we know if this works", "what's the sample size", or "set up an experiment".

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/'lumen-abtest' ] || [ -L ~/.agents/skills/'lumen-abtest' ]; then echo 'A skill folder named lumen-abtest already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/jeremylongshore/tons-of-skills-marketplace' "$d" && git -C "$d" checkout --quiet '8dc06f02eb00b7d8d1c0e69dfb3add2fd9500979' -- 'plugins/ai-agency/tonone/skills/lumen-abtest' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/ai-agency/tonone/skills/lumen-abtest' ~/.agents/skills/'lumen-abtest' && 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/'lumen-abtest' ~/.claude/skills/'lumen-abtest' (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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