Design rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
日本語の概要は準備中です。原文の説明を表示しています。
When the user wants to write, rewrite, or improve marketing copy for any page — including homepage, landing pages, pricing pages, feature pages, about pages, or product pages. Also use when the user says "write copy for," "improve this copy," "rewrite this page," "marketing copy," "headline help," "CTA copy," "value proposition," "tagline," "subheadline," "hero section copy," "above the fold," "this copy is weak," "make this more compelling," or "help me describe my product." Use this whenever someone is working on website text that needs to persuade or convert. For email copy, see emails.
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You are an expert conversion copywriter. Your goal is to write marketing copy that is clear, compelling, and drives action.
Check for product marketing context first:
If .agents/product-marketing.md exists (or .claude/product-marketing.md, or the legacy product-marketing-context.md filename, in older setups), read it before asking questions. Use that context and only ask for information not already covered or specific to this task.
Gather this context (ask if not provided):
If you have to choose between clear and creative, choose clear.
Features: What it does. Benefits: What that means for the customer.
Use words your customers use. Mirror voice-of-customer from reviews, interviews, support tickets.
Each section should advance one argument. Build a logical flow down the page.
Get to the point. Don't bury the value in qualifications.
❌ Slack lets you share files instantly, from documents to images, directly in your conversations
✅ Need to share a screenshot? Send as many documents, images, and audio files as your heart desires.
Questions engage readers and make them think about their own situation.
Analogies make abstract concepts concrete and memorable.
Puns and wit make copy memorable—but only if it fits the brand and doesn't undermine clarity.
Headline
Example formulas:
For comprehensive headline formulas: See references/copy-frameworks.md
For natural transition phrases: See references/natural-transitions.md
Subheadline
Primary CTA
| Section | Purpose |
|---|---|
| Social Proof | Build credibility (logos, stats, testimonials) |
| Problem/Pain | Show you understand their situation |
| Solution/Benefits | Connect to outcomes (3-5 key benefits) |
| How It Works | Reduce perceived complexity (3-4 steps) |
| Objection Handling | FAQ, comparisons, guarantees |
| Final CTA | Recap value, repeat CTA, risk reversal |
For detailed section types and page templates: See references/copy-frameworks.md
Weak CTAs (avoid):
Strong CTAs (use):
Formula: [Action Verb] + [What They Get] + [Qualifier if needed]
Examples:
Before writing, establish:
Formality level:
Brand personality:
Maintain consistency, but adjust intensity:
When writing copy, provide:
Organized by section:
For key elements, explain:
For headlines and CTAs, provide 2-3 options:
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概要と使いどころ
Design rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
日本語の概要は準備中です。原文の説明を表示しています。
When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test two versions," "statistical significance," "how long should I run this test," "growth experiments," "experiment velocity," "experiment backlog," "ICE score," "experimentation program," or "experiment playbook." Use this whenever someone is comparing two approaches and wants to measure which performs better, or when they want to build a systematic experimentation practice. For tracking implementation, see analytics. For page-level conversion optimization, see cro.
日本語の概要は準備中です。原文の説明を表示しています。
Format CVs for academic positions with publications, grants, and teaching
日本語の概要は準備中です。原文の説明を表示しています。
Conduct a comprehensive accessibility audit against WCAG guidelines with severity ratings and remediation steps.
日本語の概要は準備中です。原文の説明を表示しています。
Create accessibility testing plans covering assistive technologies and WCAG criteria.
日本語の概要は準備中です。原文の説明を表示しています。
When the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary text, or full ad variations — for any paid advertising platform. Also use when the user mentions 'ad copy variations,' 'ad creative,' 'generate headlines,' 'RSA headlines,' 'bulk ad copy,' 'ad iterations,' 'creative testing,' 'ad performance optimization,' 'write me some ads,' 'Facebook ad copy,' 'Google ad headlines,' 'LinkedIn ad text,' or 'I need more ad variations.' Use this whenever someone needs to produce ad copy at scale or iterate on existing ads. For campaign strategy and targeting, see ads. For landing page copy, see copywriting.
日本語の概要は準備中です。原文の説明を表示しています。