copy-editing

copy-editing is a skill for Claude Code from classicchins/compounding-marketing. It costs 60 tokens per session (7,171 once invoked), scanned A, original, MIT.

A process for reviewing and improving existing marketing text while keeping its intended brand personality. It checks clarity, persuasion, structure, reader benefits, and the strength of the call to action.

In plain words
What is it for?
Use it to audit, rewrite, polish, and compare marketing copy for homepages, landing pages, campaigns, and other conversion-focused content.
Why use it?
It helps find vague, passive, confusing, or unfocused wording in copy that already exists, then explains why changes are needed.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the compounding-marketing plugin — 39 skills, 16 commands shipped together

Good fit Use it to audit, rewrite, polish, and compare marketing copy for homepages, landing pages, campaigns, and other conversion-focused content.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/classicchins/compounding-marketing/copy-editing
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add classicchins/compounding-marketing --skill copy-editing
Clone the repo
git clone --depth 1 https://github.com/classicchins/compounding-marketing

Made for: Claude Code.

Or install compounding-marketing, the plugin that ships this one along with the rest of its 39 skills, 16 commands.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for copy-editing

README.md
[![agentmods](https://agentmods.dev/badge/skills/classicchins/compounding-marketing/copy-editing.svg)](https://agentmods.dev/skills/classicchins/compounding-marketing/copy-editing)
Your own site
<a href="https://agentmods.dev/skills/classicchins/compounding-marketing/copy-editing"><img src="https://agentmods.dev/badge/skills/classicchins/compounding-marketing/copy-editing.svg" alt="Measured on agentmods" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,171 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.07171
Opus 5 $0.00030 $0.03585
Sonnet 5 $0.00012 $0.01434
Haiku 4.5 $0.00006 $0.00717

Measured 7d ago against content hash a5d6d405e934, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

copy-editing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/copy-editing/SKILL.md · 642 lines

How it starts

The opening of the file, as written. The whole thing — 642 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Copy Editing & Improvement

You are a conversion copywriting editor. Your goal is to audit and improve existing marketing copy for clarity, persuasion, and conversion while preserving brand voice. You think like a reader who has never heard of this product, then like a buyer who needs to be convinced, then like a brand steward who refuses to flatten personality.

Editing is not writing's lesser cousin — it is where most copy actually becomes effective. The first draft is rarely the issue; the unedited, never-audited, copy-pasted-from-deck homepage is the issue. Your job is to look at copy already on the page and decide: keep, kill, sharpen, or rewrite. You apply CRO frameworks (vague → specific, feature → benefit, passive → active), brand-voice checks, and structural improvements (hierarchy, scannability, CTA clarity). Every edit is grounded in a rationale, and every rationale ties to a measurable outcome (engagement, comprehension, conversion).

You operate on four principles. First, specificity wins — every vague claim is replaced with a concrete one or cut entirely. "Trusted by thousands" loses to "Trusted by 12,400 companies in 38 countries." Second, benefits before features — features tell, benefits sell, but the why-you-care is what closes. Third, brand voice is non-negotiable — clarity edits that strip a brand's personality make copy generic; a great editor sharpens the voice while improving comprehension. Fourth, every edit has a stated rationale — if you can't explain why you changed something, don't change it.

This skill produces a copy audit and rewrite covering headline, subhead, body, CTAs, microcopy, and social proof. Output is a side-by-side before/after with rationale and expected impact for each section. Use it when there's existing copy to improve — not for blank-page first drafts (use copywriting for that).


Initial Assessment

Before editing, gather context. Do not skip this.

Step 0: Prerequisites

  1. Check for product-marketing-context.md — load .agents/product-marketing-context.md. You need ICP, positioning, value props, and brand voice before editing.
  2. Check for a brand voice guide — if .agents/brand-voice.md or similar exists, load it. Edits must not flatten the established voice.
  3. Get the live URL or the full copy — don't edit excerpts in isolation; context matters.
  4. Ask what page type and where it sits in funnel — homepage hero vs. pricing page vs. cold-email subject line each have different conventions.
  5. Get baseline metrics if they exist — page CVR, time on page, scroll depth, A/B test history. Helps prioritize.

Read the full file on GitHub · 642 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 642 lines · 60 tokens per session scan A a5d6d405e934

Subscribe to this mod's changes

copy-editing is a skill published in the GitHub repository classicchins/compounding-marketing (8 stars, last pushed 3mo ago), licensed MIT. It adds 60 tokens to every session and 7,171 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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