Use when designing copy experiments to optimize hooks, offers, and CTAs.
Scanned 2/12/2026
Install to Claude Code
npx -y skills add gtmagents/gtm-agents --skill offer-testing --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: offer-testing
description: Use when designing copy experiments to optimize hooks, offers, and CTAs.
---
# Offer Testing Playbooks Skill
## When to Use
- Planning subject line/CTA/offer tests across email, ads, or landing pages.
- Validating new positioning or pricing language.
- Running copy refresh cycles for campaigns.
## Framework
1. **Hypothesis** – statement of expected lift + rationale.
2. **Variable Selection** – hook, CTA, body copy, offer framing, proof element.
3. **Segmentation** – define audience splits and holdouts.
4. **Metrics** – primary KPI + guardrails (opens, CTR, CVR, CPL, unsub, spam).
5. **Analysis** – statistical significance (chi-square, z-test) or Bayesian approach.
## Templates
- Experiment brief (variable, control, variant, KPI, sample size, duration).
- Results report (metric table, significance, insight, next steps).
- Prioritization matrix (ICE/RICE scoring).
## Tips
- Limit to one variable per test to isolate learnings.
- Ensure minimum sample sizes per channel before declaring winners.
- Log tests and learnings in a shared repository.
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