CRO Specialist, Wilhelmina AI skill by KissMySkills, cover

Wilhelmina - Conversion Rate Optimization Specialist AI Skill

$19
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CRO Specialist, Wilhelmina AI skill by KissMySkills, cover

Wilhelmina - Conversion Rate Optimization Specialist AI Skill

Fix on-page conversion: find the exact drop-off step, form a testable hypothesis, and design a statistically valid A/B test.

$19 this skill one payment yours forever

Claude skill package instant downloadwilhelmina-cro-specialist.skill

Library plan

Get this skill and 2,500+ others

$9/mo or $59 a year

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Try this skill free for 7 daysTry this skill free

Nothing is charged. A −30% code for your first payment arrives 2 days before the trial ends.

  • Works inside Claude, ChatGPT, Claude Code, Codex and Cursor through one connector
  • Every skill, prompt pack and agent, plus AI CRM and tools during the trial
  • Cancel anytime
Why a subscription? How it works

Need just this skill?

One file, paid once. No updates, no connector.

Costs about the same as 2 months of Library.

$19

Pay once, keep foreverInstant download30-day money-back guarantee

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How it works

Ask Wilhelmina something hard.

📎 wilhelmina-cro-specialist.skillLOADED ✓
Our checkout conversion has been stuck at 30% for months. Audit it and design a test to fix it.
CLAUDE · AS WILHELMINA, CONVERSION RATE OPTIMIZATION SPECIALIST Wilhelmina returns funnel data isolating a 61% cart-to-checkout drop at the shipping-cost reveal step, a heuristic and session-recording diagnosis of the trust gap causing it, a three-variant A/B test with a stated hypothesis, minimum detectable effect, sample size, and a pre-committed decision rule, plus a final verdict.

Or have every skill inside your AI.

0:16 · no sound
Get all 2,500+ with Library · $9/mo →

Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com

// the file itself

Read it before you buy it.

The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.

Use the name
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
// the skill your AI runs on

You are Wilhelmina, a Senior CRO Specialist who reads the GA4 funnel first, scores the backlog with ICE or PXL, and sets sample size and MDE before launch. You have been activated to help the user test instead of guess.

SKILL.md · 145 lines · instant download

// what's inside

What's inside this skill

  1. Funnel drop-off located to a specific step, not a vague page-level complaint
  2. Every hypothesis grounded in a named behavioral principle, not personal taste
  3. Sample size and minimum detectable effect calculated before a test ships
  4. A pre-committed decision rule set before the data comes back

Teams with traffic but a stalled checkout or signup conversion rate who want a rigorous test, not a redesign guess.

// two ways to get it

Use it inside your AI, or download it once.

Library plan

This skill and 2,500+ others, inside your chat

$9/mo cancel anytime, or $59 a year

  • All 2,500+ skills, prompt packs and agents, loaded the moment you ask
  • Nothing to download or paste: connect once in Claude, ChatGPT, Claude Code or Cursor
  • New skills every week and 10 catalog files a month to download
Compare Library, AI CRM and Both
Buy once

Just this skill, as a file

$19 one payment

  • Download after checkout and paste it into any AI chat
  • One file, no updates, no connector
  • 30-day money-back guarantee

Already on Library or Both? This one is included, no need to buy the file.

// ask your assistant

Or let your AI set up this skill for you.

Go to kissmyskills.com/pages/connector and set up the "Wilhelmina - Conversion Rate Optimization Specialist AI Skill" skill (handle: wilhelmina-cro-specialist) for me

Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →

What you're actually buying

Drop Wilhelmina into Claude and get a senior CRO Specialist who works backward from a specific, measured drop-off point, never a page redesign because it feels dated.

Wilhelmina covers the full on-page conversion loop: funnel and friction audits, heuristic/UX review grounded in behavioral principle, qualitative research synthesis (heatmaps, session recordings, surveys), hypothesis generation, and A/B and multivariate test design with real statistical rigor, including sample-size and duration math before a test ships.

What you get

  • →Funnel drop-off located to a specific step, not a vague page-level complaint
  • →Every hypothesis grounded in a named behavioral principle, not personal taste
  • →Sample size and minimum detectable effect calculated before a test ships
  • →A pre-committed decision rule set before the data comes back
📄 wilhelmina-cro-specialist.skill Under 2 min install Works with Claude, ChatGPT & any AI chat

How to install

Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → describe your requirement → Wilhelmina builds the answer. Includes a full worked example so you see exactly what you get.

// how to install Under 2 minutes

Four steps. Any AI chat.

  1. 01
    Download the file

    After checkout, the download link lands in your inbox. Save the .skill file: Claude takes it as it is.

  2. 02
    Open your AI chat

    Any AI chat you already use: Claude, ChatGPT, Gemini, Grok, Copilot or another.

  3. 03
    Add it to your AI

    Claude: Settings → Capabilities → Skills, upload the .skill file. ChatGPT, Gemini and others: open the .skill file like a .zip archive and paste SKILL.md into custom instructions or Project instructions.

  4. 04
    Start working

    Your AI is now configured as a specialist. Ask it anything inside its domain.

No technical knowledge required.

With Library there is nothing to download. Connect your AI once, then just ask: "Load Wilhelmina from KissMySkills."

Setup guide → Library · $9/mo →

// faq

Questions about this product

What does the Wilhelmina skill do?+

Fix on-page conversion: find the exact drop-off step, form a testable hypothesis, and design a statistically valid A/B test. Load it once into Claude Projects and you get a configured Conversion Rate Optimization Specialist without re-explaining context at the start of every session. Verify every number, benchmark, and platform-specific detail against your own data, account, and current platform policies before acting on it.

How do I install this skill file?+

Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.

Which AI tools does this skill work with?+

Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.

How is this different from using Claude without the Wilhelmina skill?+

Without a skill file your AI starts every session as a general assistant. With Wilhelmina loaded it applies Conversion Rate Optimization Specialist methodology from the first message, with consistent quality every time. Verify every number, benchmark, and platform-specific detail against your own data, account, and current platform policies before acting on it.

Ready to give your AI a specialist?

This one and 2,500+ others, inside Claude, ChatGPT, Claude Code, Codex or Cursor. Cancel anytime.