Lumen Abtest is a production-ready Claude Code skill (quality score 70/100) in the research-methods sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/lumen-abtest/ and loads when your prompt matches the skill's trigger.
When to invoke it: 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".
The Lumen Abtest skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.
mkdir -p ~/.claude/skills/lumen-abtest curl -L https://claudskills.com/skills/lumen-abtest/SKILL.md \ -o ~/.claude/skills/lumen-abtest/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/lumen-abtest/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/lumen-abtest/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\lumen-abtest\SKILL.md on Windows. See the full install guide for step-by-step instructions.
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
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