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conversion-optimization · kostja94 — Claude Code skill: how to install

Guides conversion rate optimization, hypothesis design, and A/B test planning. Useful when users drop off during signups, checkout, or landing page visits.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓
npx skills add kostja94/marketing-skills --skill conversion-optimization -a claude-code
npx skills add kostja94/marketing-skills --skill conversion -a claude-code
Open on GitHub

What conversion-optimization does

The skill structures conversion rate optimization across five distinct phases: researching funnel drop-offs, framing testable hypotheses, prioritizing ideas, designing experiments, and measuring significance. Test ideas are scored from 1 to 10 using the PIE framework, which weighs Potential, Importance, and Ease. The resulting output delivers a funnel map, a structured test plan, and an implementation checklist.

Several practical testing constraints are baked into the instructions. Mobile traffic must be tested separately from desktop because mobile typically converts at roughly 50% of desktop rates and involves different ergonomics like thumb reach. For low-traffic properties, the skill directs the agent toward Bayesian testing to reach actionable results without waiting months for sample sizes. When a contextus.md file exists in the project root, it loads only the relevant modules.

This skill addresses funnel friction, forms, and layouts. For pricing psychology, tier structures, or anchoring, you should rely on the companion pricing-strategy skill instead.

What it helps with

  • Map conversion funnels and pinpoint drop-off stages
  • Prioritize backlog test ideas using the PIE scoring framework
  • Build structured hypotheses following the if X, then Y because Z formula
  • Calculate sample sizes and experiment duration for mobile and desktop splits

Example prompts for the agent

  • Audit our checkout flow and suggest test hypotheses to reduce drop-offs
  • Score our landing page experiment ideas using the PIE framework
  • Design an A/B test plan for the mobile signup screen

How to install conversion-optimization

1Skills CLI (Vercel)

npx skills add kostja94/marketing-skills --skill conversion-optimization -a claude-code
npx skills add kostja94/marketing-skills --skill conversion -a claude-code

2Manually: put the files in place

~/.claude/skills/conversion/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/conversion/

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about conversion-optimization

How to install conversion-optimization in Claude Code?

Run npx skills add kostja94/marketing-skills --skill conversion-optimization -a claude-code. You can also use the shorthand alias npx skills add kostja94/marketing-skills --skill conversion -a claude-code.

What does the conversion-optimization skill do?

It guides conversion rate optimization (CRO) by mapping funnels, scoring backlog ideas with the PIE framework, and generating detailed A/B test plans.

Why does the skill treat mobile testing separately from desktop?

Mobile converts at roughly 50% of desktop rates and features different physical constraints like thumb reach and form complexity, making combined tests unreliable.

Source text

SKILL.md · MIT
---
name: conversion-optimization
description: When the user wants to improve conversion rates, run A/B tests, optimize funnels, or reduce friction. Also use when the user mentions "CRO," "conversion rate optimization," "A/B test," "split test," "funnel optimization," "checkout optimization," "form optimization," or "conversion funnel." For pricing psychology, use pricing-strategy.
metadata:
  version: 1.1.1
---

# Strategies: Conversion Optimization

Guides conversion rate optimization (CRO): increasing the percentage of visitors who complete desired actions. Higher conversion rates mean increased revenue, reduced CAC, and better ROI. Use this skill when optimizing funnels, running experiments, or reducing friction on high-traffic pages.

**When invoking**: On **first use**, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On **subsequent use** or when the user asks to skip, go directly to the main output.

## Initial Assessment

**Project context:** Read root `contextus.md` when present and load only the modules relevant to this task. Without Contextus, use available project material or user-provided facts and ask for missing information; do not create a parallel context system.

Identify:
1. **Funnel stage**: Awareness, consideration, decision, post-purchase
2. **Conversion goal**: Signup, purchase, download, demo request
3. **Traffic**: Volume; mobile vs desktop split
4. **Current conversion rate**: Baseline for improvement

## CRO Process

| Step | Action |
|------|--------|
| **1. Research** | Map funnel; identify high-traffic, low-conversion pages |
| **2. Hypothesize** | Form testable hypothesis (if X, then Y because Z) |
| **3. Prioritize** | Score by Potential, Importance, Ease (PIE) |
| **4. Test** | A/B or multivariate; adequate sample size |
| **5. Analyze** | Statistical significance; implement winner |

## PIE Prioritization Framework

Score each test idea 1–10:

| Factor | Question |
|--------|----------|
| **Potential** | How much improvement is possible? |
| **Importance** | How much traffic does this page get? |
| **Ease** | How easy to implement? |

Rank backlog by total score; run highest-impact tests first.

## A/B Testing Best Practices

| Practice | Guideline |
|----------|-----------|
| **Sample size** | Calculate minimum before launch; 95% significance without adequate sample = false positives |
| **Duration** | Run full week cycles; account for day-of-week effects |
| **One variable** | Test one element per experiment (or use MVT for multiple) |
| **Mobile separate** | Mobile converts ~50% of desktop; test mobile independently—thumb reach, form complexity differ |
| **Low traffic** | Use Bayesian testing for faster, actionable results |

## Key Testing Areas

| Page Type | Test Ideas |
|-----------|------------|
| **Homepage** | Search bar prominence; personalized content; hero CTA; social proof placement |
| **Landing page** | Headline; form length; CTA copy; above-fold layout |
| **Product/Category** | Quick view; descriptions; add-to-cart placement |
| **Checkout** | Form fields; progress indicator; trust badges; guest checkout |
| **Pricing** | Plan order; anchoring; CTA per tier |

**Personalization**: Personalized experiences generate ~41% more impact than generic ones.

## Commercialization Infrastructure

| Module | Purpose |
|--------|---------|
| **Data & BI** | Data warehouse; user behavior events; agile surveys |
| **A/B testing** | Experiment platform; statistical significance; backend-controlled variants |
| **User education** | Help docs (multi-language); update notifications; EDM |
| **Attribution** | Ad pixels; attribution model; impression-to-click-to-sale tracking |

**Avoid**: Intrusive interstitials; popups that block content. Prefer non-intrusive ad formats.

## Foundational Requirements

- **Analytics**: Map funnels; identify drop-off points (analytics-tracking, traffic-analysis)
- **Qualitative**: Heatmaps, session recordings, user tests—understand *why* drop-off occurs
- **Technical**: Dedicated resources for 2–4 tests/month; maintain momentum

## Output Format

- **Funnel map** (stages, conversion rates, drop-off)
- **Hypothesis** (if X, then Y because Z)
- **Test plan** (variant, metric, sample size, duration)
- **Implementation** checklist

## Related Skills

- **landing-page-generator**: Landing page structure and copy
- **cta-generator**: CTA design and placement
- **analytics-tracking**: GA4, events, conversion tracking
- **traffic-analysis**: Attribution, funnel analysis
- **copywriting**: Headline, CTA copy for tests

© kostja94 · MIT · kostja94/marketing-skills

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