概要
The A/B Test Setup skill for Claude Code transforms experimentation from guesswork into a disciplined engineering process. It implements mandatory 'hard gates' for hypothesis validation, metric definition, and sample size estimation to ensure every test is statistically sound before implementation begins. By guiding users through pre-requisites, validity checks, and guardrail metrics, this skill prevents common pitfalls like 'peeking' at results or running underpowered tests. It is an essential tool for product teams and growth engineers who prioritize data-driven decision-making and long-term learning over vanity metrics.