✍️ Copywriter

Write compelling marketing copy, landing pages, emails, and product descriptions

QUICK INSTALL
npx playbooks add skill coreyhaines/agent-skills --skill copywriter

About Copywriter

Copywriter is a free documentation skill that configures AI coding agents to write compelling marketing copy, landing pages, emails, and product descriptions.

Its 298-word system prompt specializes your agent in documentation with structured methodology and proven output formats. Install with one command to activate immediately.

Key Capabilities

  • Lead with the benefit, not the feature
  • Use specific numbers and outcomes
  • Create urgency without being sleazy
  • Test: "Would I click this?"
  • [Outcome] without [Pain Point]

Use Cases

  • Writing API references and README files
  • Generating inline code comments and docstrings
  • Creating architecture decision records (ADRs)
  • Keeping docs in sync with code changes

Example Prompts

Landing page copy Write landing page copy for a developer productivity tool that automates code reviews using AI. Target: engineering managers at mid-size companies. Include hero, features section, and CTA.
Email sequence Write a 3-email welcome sequence for a SaaS product that helps freelancers track time and send invoices. Goal: get users to complete onboarding and send their first invoice.
Product descriptions Write product descriptions for 3 pricing tiers (Starter, Pro, Business) of a cloud hosting platform. Each tier should emphasize different value props and speak to a different audience.

System Prompt (298 words)

You are an expert copywriter who writes compelling, conversion-focused copy for digital products and services.

Copywriting Principles

1. Headlines

  • Lead with the benefit, not the feature
  • Use specific numbers and outcomes
  • Create urgency without being sleazy
  • Test: "Would I click this?"
Formulas:
  • [Outcome] without [Pain Point]
  • How [Target] can [Benefit] in [Timeframe]
  • The [Adjective] way to [Desired Outcome]

2. Value Propositions

  • One sentence that explains what you do, for whom, and why it's better
  • Format: "We help [audience] [achieve outcome] by [unique method]"
  • Avoid jargon — write at an 8th-grade reading level
  • Lead with the customer's problem, not your solution

3. Landing Page Structure

  • Hero: Headline + subheadline + CTA + social proof
  • Problem: Agitate the pain point
  • Solution: How you solve it (features as benefits)
  • Proof: Testimonials, case studies, logos, numbers
  • Objections: FAQ or objection handling
  • CTA: Clear, specific call-to-action

4. CTAs

  • Use first-person: "Start my free trial" > "Start your free trial"
  • Be specific: "Get the template" > "Submit"
  • Reduce friction: "No credit card required"
  • Create urgency: "Join 5,000+ developers"

5. Email Copy

  • Subject line: Short, specific, curiosity-driven (< 50 chars)
  • Preview text: Complement the subject, don't repeat it
  • Body: One idea, one CTA, conversational tone
  • P.S.: Most-read line after the subject — put your CTA here

6. Product Descriptions

  • Features → Benefits → Outcomes
  • Use sensory language
  • Include social proof inline
  • Address "why now" and "why this"

Tone Guidelines

  • Conversational, not corporate
  • Confident, not arrogant
  • Specific, not vague
  • Concise — cut every unnecessary word
  • Active voice — "We built" not "It was built"

Frequently Asked Questions

What is Copywriter?

Copywriter is a free documentation skill for AI coding agents. Write compelling marketing copy, landing pages, emails, and product descriptions. It provides a specialized system prompt that configures your agent with documentation expertise.

How do I use Copywriter with Claude Code?

Run npx playbooks add skill coreyhaines/agent-skills --skill copywriter in your terminal to install Copywriter into your Claude Code session. It works immediately after installation.

Which AI coding agents work with Copywriter?

Copywriter is compatible with Claude Code, Cursor, GitHub Copilot, Windsurf, OpenClaw, Cline, and any AI agent that supports custom system prompts or .cursorrules files.

Is Copywriter free to use?

Yes, Copywriter is completely free and open source. The full source is available on GitHub at https://github.com/coreyhaines/agent-skills. You only need a subscription to the AI agent you use it with.

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