skills / marketing

copywriting

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," "hero section copy," "this copy is weak," "this sounds like AI," "AI slop," "make it sound human," or "help me describe my product." Drafts never use AI tells like "it's not X, it's Y" reveals, "no X, no Y, no Z" lists, or sentences that trail into extra comma clauses. 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. Claims must be supportable, and a declined claim names the evidence that would unlock it. Diagnoses the input first (blank brief, real voice, or point edit) and changes only what it calls for.

Verified Before and after: 2 models 1 try per case View source Download .zip

Compare the answers

Answers from Claude Sonnet 5.5 and GPT-6.1 Sol · try 1 of 1

Same request, same model, once with the skill and once without. Read both and judge for yourself.

“Rewrite this headline: 'An Innovative AI-Powered Platform for Streamlined Business Operations' — it's for a B2B SaaS tool that helps small businesses manage invoicing and payments.”

with the skill
**Diagnosis:** C, a point edit. The original has no angle or voice to preserve. It's company-speak that fails the swap test (any invoicing competitor could use it). **Recommended:** **Send invoices and collect payments in one place** Reason: It names what the product does in the customer's words, and it passes the "Now you can…" test. "Innovative," "streamlined," and "business operations" are replaced by the two jobs the tool actually does. **Alternatives** - **Invoicing and payments for small businesses.** Plainest option, and it says who it's for. Best if the page needs to qualify visitors fast. - **Invoice your customers. Get paid without chasing them.** Only use this if the product automates reminders or follow-up. It's a claim about behavior, so confirm it's true. **Dropped: "AI-powered."** I can't say what the AI does for the customer, so it has nothing to attach to. Buyers read it as a buzzword. Tell me the specific job (for example, "drafts invoices from a job description" or "flags customers likely to pay late") and it can go in the subhead as a concrete feature. **Missing, which would sharpen this** - `[NEED: differentiator vs. named competitors]` (QuickBooks, FreshBooks, Wave, etc.). Without it, every headline here is still somewhat swappable. - `[NEED: proof for a "get paid faster" claim]`. I held it back because nothing supports it yet. Customer data on average days-to-payment, or a case study, would unlock a line like "Get paid in X days instead of Y."
without
Here are a few options, depending on the tone you want: **Benefit-led** - Get Paid Faster, Without the Paperwork - Invoicing and Payments That Run Themselves - Send Invoices. Get Paid. Get Back to Work. **Specific and credible** - AI-Powered Invoicing That Gets Small Businesses Paid Sooner - Smarter Invoicing and Payments for Growing Small Businesses **Pain-point focused** - Stop Chasing Payments. Let AI Do It. - Late Invoices Cost You. Automate Them Away. **Why these work better than the original:** - **Specific:** "Business operations" is vague, while "invoicing" and "payments" tell visitors exactly what you do. - **Outcome-focused:** Small business owners care about getting paid faster and saving time, not about the technology itself. - **Plain language:** "Innovative," "platform," and "streamlined" are overused and don't say anything concrete.
Show the rest (3 more lines)
My top pick is **"Get Paid Faster, Without the Paperwork."** It's short, clear, and leads with the main benefit. You could pair it with a subheadline like: *"AI-powered invoicing and payments built for small businesses."* If you tell me more about your key differentiator (automated reminders, fast payouts, easy setup), I can tailor these further.

Answers are shown exactly as the model wrote them, from the first try, and nothing is picked by hand.

The models

2 models

Claude Sonnet 5.5

made by Anthropic

claude-sonnet-5-5 · revision not reported by the provider

1 try per case · tested 1 Nov 2026

GPT-6.1 Sol

made by OpenAI

gpt-6.1-sol · revision not reported by the provider

1 try per case · tested 1 Nov 2026

The tasks

Our tests

feature-section

“Write a short feature section for Pinpoint's new scheduled reports feature.”

hero-invoicing

“Write the hero section for Tallybook's homepage: headline, subheadline and button text.”

rewrite-headline

“Rewrite this headline: 'An Innovative AI-Powered Platform for Streamlined Business Operations'. It's for a tool that helps small businesses send invoices and collect payments.”

signup-page

“Write the copy for the signup page of our free tool that checks whether your email will land in spam.”

why-switch-section

“Write a 'Why teams switch' section for Ledgerline's homepage, about 120 words.”

The creator’s own tests

creator-1

“Write homepage copy for a SaaS tool that automates employee onboarding. Target audience is HR directors at mid-size companies (200-2000 employees). Main differentiator is that it integrates with all major HRIS systems and cuts onboarding time from 2 weeks to 2 days.”

creator-10

“Can you make this homepage hero better? I wrote it myself and it feels rough. Headline: Your agency doesn't need another dashboard. It needs to get paid. Subhead: We got sick of chasing clients for money, so we built the thing that does it for us. Invoices go out when the work ships. Late payers get nagged. You get your evenings back. CTA: Try it free”

creator-2

“Rewrite this headline: 'An Innovative AI-Powered Platform for Streamlined Business Operations' — it's for a B2B SaaS tool that helps small businesses manage invoicing and payments.”

creator-3

“i need copy for my pricing page. we have three plans: starter ($29/mo), pro ($79/mo), business ($199/mo). it's a social media scheduling tool for marketers”

creator-4

“Write copy for our About page. We're a 3-person startup that built a developer tool for database migrations. Founded because we kept losing data during migrations at our last jobs. Tone should be professional but human.”

creator-5

“Can you improve this CTA? We currently have 'Learn More' on our feature page for our analytics dashboard product.”

creator-6

“Write me a 5-email welcome sequence for new trial users of our project management tool.”

creator-7

“Review this copy and tell me what's wrong: 'We are extremely excited to announce our revolutionary, cutting-edge platform that will totally transform how businesses optimize their workflows! Sign up now!!'”

creator-8

“Write above-the-fold copy for a calendar scheduling tool. Our differentiator is that the recipient gets to overlay their own calendar on the invite, so picking a time feels fair to both people instead of one-sided. Same product needs to work for indie founders AND for enterprise ops teams.”

creator-9

“Write a homepage hero (headline, subhead, CTA) and a short launch post for X for our Shopify inventory app. It installs from the Shopify App Store in one click, needs no signup form or credit card, and runs low-stock alerts, reorder emails, and supplier purchase orders off the product and sales data the store already has, so there's nothing to import.”

Install

Download the .zip and unzip it. Put its files, in a folder named copywriting, here:

Claude Code~/.claude/skills/Every project. For one project only, use .claude/skills/ inside it.
Codex~/.agents/skills/Every project. For one repository only, use .agents/skills/ inside it.
Cursor~/.cursor/skills/Cursor also reads the Claude Code and Codex folders above.

Then start a new session and ask for what the skill does. Other agents that read SKILL.md have their own skills folder; check their docs.

Coming after launch: get skills from inside your agent, no download needed.