copy-editing Skill for Claude Code: Edit Marketing Copy in Seven Sweeps

Makes Claude edit your existing marketing copy in seven focused passes, and remove phrases that sound AI-written.

Installs: 154K; on skills.sh
Stars: 57.9K; on GitHub
Files: 4; besides SKILL.md
Updated: Oct 2026; last repo commit

copy-editing makes Claude improve copy you already have, instead of rewriting it from scratch. It triggers on requests like "edit this copy", "tighten this up", "too wordy" or "make it sound human". Claude works through seven sweeps: clarity, voice and tone, so what, prove it, specificity, heightened emotion and zero risk.

Every edit removes AI tells such as "it's not X, it's Y" reveals and "no X, no Y, no Z" lists. If you ask to fix one line, Claude changes only that line. After the sweeps, an expert panel step has 3 to 5 personas score the copy, and Claude revises until every persona scores 7 or more. It reads .agents/product-marketing.md if you have one. The skill bundles 3 reference files and an eval file, and no scripts.

Good for

Founders and marketers with a draft page, email or ad to tighten
Writers who want a structured edit instead of a loose rewrite
Anyone whose copy reads as AI-written

Install copy-editing

Claude Code

Copy this prompt.

Install the copy-editing skill in Claude Code. Run this command:

npx skills add https://github.com/coreyhaines31/marketingskills --skill copy-editing

Then check that it loaded and tell me how to use it.

2
Paste it into Claude Code. It shows the change and asks before running it.

Requires Node.js.

From its listing on skills.sh. Source.

What's in the skill

When it loads

When the user wants to edit, review, or improve existing marketing copy, or refresh outdated content.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up this text,' 'too wordy,' 'sharpen the messaging,' 'refresh this content,' 'update this page,' 'this content is outdated,' or 'content audit,' 'this sounds like AI,' 'AI slop,' 'de-slop this,' or 'make it sound human.' Use this when the user already has copy and wants it improved or refreshed rather than rewritten from scratch. Every edit removes AI tells such as 'it's not X, it's Y' reveals, 'no X, no Y, no Z' lists, and sentences that trail into extra comma clauses. A request to fix one line gets a point edit that changes only that line. For writing new copy, see copywriting.

Sections in SKILL.md

Core Philosophy
The Seven Sweeps Framework
Sweep 1: Clarity
Sweep 2: Voice and Tone
Sweep 3: So What
Sweep 4: Prove It
Sweep 5: Specificity
Sweep 6: Heightened Emotion
Sweep 7: Zero Risk
Expert Panel Scoring
How It Works
Recommended Expert Panels
Scoring Rubric
When to Use
Quick-Pass Editing Checks
Word-Level Checks

Key facts

Author: Corey Haines (coreyhaines31/marketingskills)
License: MIT
Installs on skills.sh: 154,041 (Nov 2, 2026)
GitHub stars: 57,855 (Nov 2, 2026)
skills.sh audits: Gen Agent Trust Hub: pass, Socket: pass, Snyk: pass
Last commit: 2026-10-31
Files: SKILL.md plus 4 bundled files: evals/evals.json, references/checklist.md, references/content-refresh.md and references/plain-english-alternatives.md
Sweeps: 7: clarity, voice and tone, so what, prove it, specificity, heightened emotion, zero risk
Version in SKILL.md: 2.2.1

What it includes

Makes the message understandable on first read
The first of seven passes.
Read · Sweep 1: Clarity
Keeps one consistent voice that fits the reader
Uses brand voice from your product-marketing file if present.
Read · Sweep 2: Voice and tone
Turns each feature into a benefit
Asks what the reader gains.
Read · Sweep 3: So what
Adds evidence for every claim
Flags claims without proof.
Read · Sweep 4: Prove it
Replaces vague claims with concrete ones
Numbers and names over generic words.
Read · Sweep 5: Specificity
Adds the feeling that makes a reader act
Checks flat language and pain points that are mentioned but not felt.
Read · Sweep 6: Heightened emotion
Removes the reasons a reader hesitates
Addresses doubt near the call to action.
Read · Sweep 7: Zero risk
3 to 5 personas score the copy and push for revisions
Aims for every persona at 7 or higher and a panel average of 8 or higher.
Read · Expert panel scoring
Removes patterns that read as AI-written
Part of the quick-pass checks, alongside word, sentence and paragraph checks.
Read · AI-tell check

From the official docs

Questions

What does the copy-editing skill do?

It makes Claude edit copy you already wrote, in seven sweeps. It also removes AI-sounding patterns. If you ask for one line, it edits only that line.

How do I install it in Claude Code?

Use the install box above, which adds copy-editing from the marketingskills repo. The README also documents a Claude Code plugin route, /plugin marketplace add coreyhaines31/marketingskills then /plugin install marketing-skills, which installs every skill in the set.

What is an example prompt?

"Edit this landing page copy. It is too wordy and sounds like AI." Paste the copy after it.

How is it different from the copywriting skill?

The SKILL.md says copywriting is for writing new copy from scratch. copy-editing is for improving a draft you already have. Both are separate skills in the same repo.

Can it refresh outdated content?

Yes. The SKILL.md includes a content refresh section and a reference guide for updating older pages.

Does it need other skills?

No. The SKILL.md only says to read .agents/product-marketing.md if that file exists, and the README calls the product-marketing skill the foundation of the set. Install product-marketing first if you want copy-editing to start from your product and audience details.

Does it work in the Claude app or Codex?

The README says the set works with Claude Code and Codex, and lists a Codex plugin route. For the Claude app it provides per-skill ZIP files on its Releases page, uploaded under Customize, Skills.

Is it safe to install?

The skill bundles no scripts, only the SKILL.md, three reference guides and an eval file. Read the SKILL.md before you install it, as with any skill.

Information

updated Nov 2, 2026

Repository: coreyhaines31/marketingskills
Folder: skills/copy-editing

coreyhaines31/marketingskills skills.sh

Sources

Docs, issue trackers and discussions this page is built from.

Show all 4

SKILL.md · github.com
marketingskills README · github.com
skills.sh listing · skills.sh
GitHub repo · github.com