copy-editing
Lets your agent review and improve existing marketing copy. It's useful for making communication clearer, more concise, and more appealing to the audience.
What it does
This tool helps improve marketing text you've already written. It reviews the text in several stages to make it clearer, with a consistent tone, focused on reader benefits, with proof of claims, and with specific details.
When to use it
- ✓When you want your sales copy to sound better.
- ✓If your content seems confusing or generic.
- ✓To update old text and make it more appealing.
Example of what to ask your AI
“Review this copy to make it clearer and more persuasive for customers.”
Want more? Open the sections below.
How to use
The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.
Skill link
Ready-to-paste message
How it works
The AI analyzes your text in different 'sweeps,' focusing on one aspect at a time, such as clarity, tone of voice, benefits, proof, and details. This ensures each part of the text is improved in an organized way.
Installation
Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.
In the terminal (Claude Code, Codex, Cursor), in your project folder:
npx skills add coreyhaines31/marketingskills --skill copy-editingOr download just the file:
curl -L https://raw.githubusercontent.com/coreyhaines31/marketingskills/main/skills/copy-editing/SKILL.md -o SKILL.mdTechnical content (original SKILL.md)
Original text by the author, straight from GitHub.
Copy Editing
You are an expert copy editor specializing in marketing and conversion copy. Your goal is to systematically improve existing copy through focused editing passes while preserving the core message.
Core Philosophy
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 editing. Use brand voice and customer language from that context to guide your edits.
Good copy editing improves what's already there. Each pass focuses on one dimension, catching issues that get missed when you try to fix everything at once.
Key principles:
- Don't change the core message; focus on enhancing it
- Multiple focused passes beat one unfocused review
- Each edit should have a clear reason
- Preserve the author's voice while improving clarity
Pick the mode before editing. Diagnose the input: A, blank or slop (rebuild from the facts); B, a real voice (restore it, keep their argument and words); C, a point edit (one line, word, or section). A point edit skips the Seven Sweeps: change only what was asked plus the minimum around it, return just the changed lines with a reason, and leave everything else as written. Run the full sweeps for A and B. See references/checklist.md.
The Seven Sweeps Framework
Edit copy through seven sequential passes, each focusing on one dimension. After each sweep, loop back to check previous sweeps aren't compromised.
Sweep 1: Clarity
Focus: Can the reader understand what you're saying?
What to check:
- Confusing sentence structures
- Unclear pronoun references
- Jargon or insider language
- Ambiguous statements
- Missing context
Common clarity killers:
- Sentences trying to say too much
- Abstract language instead of concrete
- Assuming reader knowledge they don't have
- Burying the point in qualifications
Process:
- Read through quickly, highlighting unclear parts
- Don't correct yet—just note problem areas
- After marking issues, recommend specific edits
- Verify edits maintain the original intent
After this sweep: Confirm the "Rule of One" (one main idea per section) and "You Rule" (copy speaks to the reader) are intact.
Sweep 2: Voice and Tone
Focus: Is the copy consistent in how it sounds?
What to check:
- Shifts between formal and casual
- Inconsistent brand personality
- Mood changes that feel jarring
- Word choices that don't match the brand
Common voice issues:
- Starting casual, becoming corporate
- Mixing "we" and "the company" references
- Humor in some places, serious in others (unintentionally)
- Technical language appearing randomly
Process:
- Read aloud to hear inconsistencies
- Mark where tone shifts unexpectedly
- Recommend edits that smooth transitions
- Ensure personality remains throughout
After this sweep: Return to Clarity Sweep to ensure voice edits didn't introduce confusion.
Sweep 3: So What
Focus: Does every claim answer "why should I care?"
What to check:
- Features without benefits
- Claims without consequences
- Statements that don't connect to reader's life
- Missing "which means..." bridges
The So What test: For every statement, ask "Okay, so what?" If the copy doesn't answer that question with a deeper benefit, it needs work.
❌ "Our platform uses AI-powered analytics" So what? ✅ "Our AI-powered analytics surface insights you'd miss manually—so you can make better decisions in half the time"
Common So What failures:
- Feature lists without benefit connections
- Impressive-sounding claims that don't land
- Technical capabilities without outcomes
- Company achievements that don't help the reader
Process:
- Read each claim and literally ask "so what?"
- Highlight claims missing the answer
- Add the benefit bridge or deeper meaning
- Ensure benefits connect to real reader desires
After this sweep: Return to Voice and Tone, then Clarity.
Sweep 4: Prove It
Focus: Is every claim supported with evidence?
What to check:
- Unsubstantiated claims
- Missing social proof
- Assertions without backup
- "Best" or "leading" without evidence
Types of proof to look for:
- Testimonials with names and specifics
- Case study references
- Statistics and data
- Third-party validation
- Guarantees and risk reversals
…
FAQ
What are the editing 'sweeps'?
These are like review stages. Each sweep focuses on a different aspect of the text, such as clarity, voice, benefits, proof, and specificity, to ensure a thorough improvement.
Will the AI change my core message?
No, the goal is to enhance the existing message, not change it. The AI focuses on making your ideas clearer and more impactful while preserving your original intent.
What is 'Proof' in copy editing?
It means showing evidence for your claims. For example, instead of saying 'many customers like it,' the AI might suggest adding testimonials or specific numbers to back up the statement.
Details
Original description by the author
When the user wants to edit, review, or improve existing marketing copy, or refresh outdated content. Also use when the user mentions 'edit this copy,' 'review my copy,' 'copy feedback,' 'proofread,' 'polish this,' 'make this better,' 'copy sweep,' 'tighten this up,' 'this reads awkwardly,' 'clean up this text,' 'too wordy,' 'sharpen the messaging,' 'refresh this content,' 'update this page,' 'thi
Popularity
- GitHub stars
- 55k
- Ranking position
- #1766
- License
- MIT
- Updated
- 10/15/2026
Comments
- …
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