copywriting

An agent skill by coreyhaines31, from coreyhaines31/marketingskills. Tags: copywriting, design, generative, marketing, web.

What it does

When the user wants to write, rewrite, or improve marketing copy for any page — including homepage, landing pages, pricing pages, feature pages, about pages, or product pages. Also use when the user says "write copy for," "improve this copy," "rewrite this page," "marketing copy," "headline help," "CTA copy," "value proposition," "tagline," "subheadline," "hero section copy," "above the fold," "this copy is weak," "make this more compelling," or "help me describe my product." Use this whenever someone is working on website text that needs to persuade or convert. For email copy, see emails. For popup copy, see popups. For editing existing copy, see copy-editing. For the offer underneath the copy (bonuses, guarantees, value framing), see offers.

Install

With the skills CLI, which installs into Claude Code, Codex, Cursor and other agents:

npx skills add coreyhaines31/marketingskills --skill copywriting

Or copy the skill folder into Claude Code's skills directory by hand (~/.claude/skills for every project, or .claude/skills inside one):

git clone --depth 1 https://github.com/coreyhaines31/marketingskills
cp -r marketingskills/skills/copywriting ~/.claude/skills/copywriting

Safety box score

Grade A, minimal risk: 4 of 100 risk points, rated 2026-10-15. The grade rates what the skill and its scripts can reach on the machine of whoever installs it, across eight categories from shell execution to secrets access. How the score works.

This is a documentation-only copywriting skill for drafting and revising marketing pages, CTAs, and related public-facing text. It mostly affects the quality and accuracy of generated copy; the main concrete access it requests is reading local context files for brand guidance, not running code or contacting external services.

Category levels, from 0 (none) to 3 (high)
Category	Level	Why
Code & shell execution	0 (none)	No shell commands, code evaluation, or shipped scripts are present; the files are Markdown and JSON guidance only.
Network access	0 (none)	The skill does not download remote content or send data to external hosts; it only references local reference files such as `references/copy-frameworks.md`.
Filesystem reach	1 (low)	It explicitly says to read local context files if present, e.g. `If .agents/product-marketing.md exists ... read it before asking questions`, which is read access within the workspace.
Secrets & credentials	0 (none)	It does not ask for API keys, passwords, `.env` files, browser sessions, or other credentials; its inputs are product and brand context for copywriting.
Privilege & persistence	0 (none)	There is no sudo, service installation, shell startup editing, or other privilege-changing behavior in the shipped files.
Instruction hijack surface	0 (none)	The content gives copy style rules and bans, but it does not instruct the agent to ignore higher-priority instructions or follow fetched remote content.
Irreversible actions	0 (none)	It drafts copy but does not itself post, publish, deploy, pay, book, or send messages on the user's behalf.
Transparency	0 (none)	All shipped files are human-readable Markdown/JSON; there are no binaries, minified blobs, or runtime-decoded payloads.

Before installing

Check whether `.agents/product-marketing.md` or `.claude/product-marketing.md` contains anything sensitive before letting the agent read it.
Review `references/ai-tells.md` so you know the style constraints it will enforce on generated copy.
Decide in advance whether you want it to use your real product claims, since it will flag unsupported claims rather than invent them.

Rated 2026-10-15 by an automated review of 5 files from the skill's repository.

Source

Repository: coreyhaines31/marketingskills (all skills from this repository)
Path: skills/copywriting/SKILL.md
Branch: main
Collection: marketingskills
Updated: 2026-09-21

ad-creative — When the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary text.
free-tools — When the user wants to plan, evaluate, or build a free tool for marketing purposes — lead generation, SEO value, or brand awareness.
image — When the user wants to create, generate, edit, or optimize images for marketing — blog heroes, social graphics, product mockups, profile banners.
stitch::generate-design — Generate new screens from text prompts or images, edit existing screens with prompts and design system tokens, and generate design variants using Stitch MCP.
algorithmic-art — Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code.
brainstorming — You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior.