copy-editing SKILL.md skillA

copy-editing from coreyhaines31/marketingskills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add coreyhaines31/marketingskills/copy-editing@v2.2.0

Pins v2.2.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
coreyhaines31/marketingskills
Path
skills/copy-editing/SKILL.md
Versions recorded
10
Latest version
v2.2.0, committed Oct 15, 2026
First version recorded
Feb 27, 2026
Size
18,459 bytes
Repository stars
55,622
License
MIT

When the user wants to edit, review, or improve existing marketing copy, or refresh outdated content.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up this text,' 'too wordy,' 'sharpen the messaging,' 'refresh this content,' 'update this page,' 'this content is outdated,' or 'content audit,' 'this sounds like AI,' 'AI slop,' 'de-slop this,' or…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# 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
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add coreyhaines31/marketingskills/copy-editing@sha256:2a072606d9d56625

The line at the top of this page pins the label v2.2.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_nc6rjp7p5qilzmn2.svg)](https://markdownregistry.com/a/art_nc6rjp7p5qilzmn2)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 10 versions of this file, between Feb 27, 2026 and Oct 15, 2026, about one every 26 days.

versioncommittedcommitsizeaudit
v2.2.0 latest2026-10-15 158bd3a 18,459 BA view · diff
v2.1.12026-10-15 3f4f60d 18,459 BA view · diff
v2.1.12026-10-15 ef75a31 18,386 BA view · diff
v2.1.12026-10-07 85f66a5 17,894 BA view · diff
v2.1.02026-10-02 12188f1 17,856 BA view · diff
v2.0.02026-05-14 30f9b9a 15,000 BA view · diff
v1.3.02026-04-04 4874fe8 16,259 BA view · diff
v1.2.02026-04-04 d88009d 15,529 BA view · diff
v1.1.02026-03-04 e4283c6 13,426 BA view · diff
v1.1.02026-02-27 f5badfe 13,287 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (18459 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

coreyhaines31/marketingskills · 55,622 stars · license MIT · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_nc6rjp7p5qilzmn2
GET https://markdownregistry.com/api/v1/resolve?ref=coreyhaines31/marketingskills/copy-editing
GET https://markdownregistry.com/api/v1/blob/2a072606d9d5662509ea6ef62c65719487dcb68876acab9286bde4d1af5c030f

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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