Is the Copy Editing skill free?

Yes. The skill itself is free from coreyhaines31/marketingskills. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Copy Editing SkillProof Score?

9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.

How do I install Copy Editing?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Copy Editing with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Copy Editing

Seven-pass marketing-copy editor (clarity, proof, specificity, risk) that preserves voice.

by coreyhaines31 · coreyhaines31/marketingskills

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.2/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 33110f4

The Seven Sweeps pass turned a feature-only homepage blurb ('powerful solution... optimize workflows') into copy with a quantified proof point and a risk-reversed CTA, catching gaps (zero proof, no specificity, no risk reversal) a single read-through missed entirely; it's tuned for marketing/conversion copy, not general prose.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 8/10
Docs & honesty 5/5

What Copy Editing does

Edits existing marketing and conversion copy through seven sequential focused passes (Clarity, Voice/Tone, So-What, Prove It, Specificity, Heightened Emotion, Zero Risk), looping back after each pass to protect earlier fixes. Optionally reads a .agents/product-marketing.md brand-voice file if present. Built specifically for marketing copy, not general prose — for writing new copy from scratch it points to a separate copywriting skill.

How to install Copy Editing

git clone https://github.com/coreyhaines31/marketingskills
cd marketingskills
mkdir -p ~/.claude/skills
cp -r skills/copy-editing ~/.claude/skills/copy-editing

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Copy Editing

/copy-editing Seven-pass marketing-copy editor (clarity, proof, specificity, risk) that preserves voice.

It also activates on plain-language prompts like these:

Line-edit this essay for clarity without flattening my voice
Tighten this paragraph but keep my writing style intact
Fix the grammar in this draft without rewriting my tone

Appears in

Skills for Writers

Frequently asked questions

Is the Copy Editing skill free?: Yes. The skill itself is free from coreyhaines31/marketingskills. SkillProof publishes the install command and an independent test verdict at no cost.
Does Copy Editing work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. The Seven Sweeps pass turned a feature-only homepage blurb ('powerful solution... optimize workflows') into copy with a quantified proof point and a risk-reversed CTA, catching gaps (zero proof, no specificity, no risk reversal) a single read-through missed entirely; it's tuned for marketing/conversion copy, not general prose.
What is the Copy Editing SkillProof Score?: 9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.
How do I install Copy Editing?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Copy Editing with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.