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Copy editing skill

Copy editing is part of Corey Haines' marketing skills. Its job is to tighten, review and refresh copy that already exists. It loads on its own when a request matches its description, and you can also call it by name.

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When the agent reaches for it

The agent keeps every installed skill's description in view and loads the full instructions when a request matches. This is the description it reads:

When the user wants to edit, review, or improve existing marketing copy, or refresh outdated content.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up this text,' 'too wordy,' 'sharpen the messaging,' 'refresh this content,' 'update this page,' 'this content is outdated,' or 'content audit.' Use this when the user already has copy and wants it improved or refreshed rather than rewritten from scratch. For writing new copy, see copywriting.

What the instructions cover

The sections of its SKILL.md, in order.

  • Core Philosophy
  • The Seven Sweeps Framework
  • Expert Panel Scoring
  • Quick-Pass Editing Checks
  • Copy Editing Checklist
  • Common Copy Problems & Fixes
  • Working with Copy Sweeps
  • References
  • Content Refresh Editing
  • Task-Specific Questions
  • Related Skills
  • When to Use Each Skill

What ships with it

Besides SKILL.md, the folder carries these. The agent opens them only when a step in the instructions calls for one.

  • evals/ 1 file · 7 KB
  • references/ 3 files · 12 KB

Install the copy editing skill

For Claude Code, run this in a terminal. It comes from the publisher's own instructions.

terminal 
npx skills add coreyhaines31/marketingskills --skill copy-editing -a claude-code

License: MIT.

In Longwave, add Marketing Skills from the marketplace. It installs all 50 of its skills, and your Claude Code, Codex and OpenCode threads can use them.

Questions people ask

How do I install the copy editing skill?

For Claude Code, run npx skills add coreyhaines31/marketingskills --skill copy-editing -a claude-code in a terminal. In Longwave, add Marketing Skills from the marketplace, and its skills reach your Claude Code, Codex and OpenCode threads.

When does the agent use the copy editing skill?

When a request matches its description. The agent keeps only the name and description of each installed skill in view, and reads the full instructions when a task fits. You can also ask for it by name.

Use your skills in every harness.

Longwave installs a skill collection once, and your Claude Code, Codex and OpenCode threads can all use it.

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