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build-experiment-design

100 / 100 · Low risk

Fine to try.

By polar-bear-org/claude-skills (GitHub) · design · 54 stars · scanned at commit 95f0180

Plans a controlled experiment for the version engineers build and run on real traffic, producing a hypothesis, one primary metric with guardrails, a sample and duration check from your own numbers and a decision rule written before launch. Use for "run build-experiment-design", "plan the A/B test for the built version", "will the built feature move the number", "is our traffic big enough for a test", "how long should the experiment run", "write the decision rule before launch", "what are our gu…

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/'build-experiment-design' ] || [ -L ~/.agents/skills/'build-experiment-design' ]; then echo 'A skill folder named build-experiment-design already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/polar-bear-org/claude-skills' "$d" && git -C "$d" checkout --quiet '95f01806ca43f6ee788d0579743e35853b695930' -- 'packs/product-builders-pack/skills/build-experiment-design' && mkdir -p ~/.agents/skills && cp -R "$d"/'packs/product-builders-pack/skills/build-experiment-design' ~/.agents/skills/'build-experiment-design' && 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/'build-experiment-design' ~/.claude/skills/'build-experiment-design' (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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