# Experiment Designer

> experiment-designer

- Skill: `comeonoliver/experiment-designer` (Agent Skill)
- Install (CLI): `npx skillmds@latest add comeonoliver/experiment-designer`
- Raw SKILL.md: https://api.skillmd.com/api/skills/comeonoliver/experiment-designer/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ComeOnOliver (https://skillmd.com/u/comeonoliver)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/comeonoliver/experiment-designer

---

# experiment-designer

## When to use
- When you want to validate messaging fast without guessing.

## Inputs
- outputs/messaging_house.md
- outputs/offer_page_blueprint.md (optional)
- Constraints: budget, time, volume

## Output
- outputs/experiment_plan.md (includes a test card)

## Instructions
1. State the hypothesis (use the one-liner positioning).
2. Pick the smallest viable test (e.g., email CTA test, simple landing page, £50–£200 ad test).
3. Define metrics, pass threshold, and stop rules.
4. Output the plan + a Test Card using templates/test_card.md.

## Lead magnet note
If you want the full Value By Design workflow + outputs, join the beta:
https://polything.kit.com/674540667f