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.

“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.”

with the skill
**Diagnosis:** A. You gave me a differentiator and an audience split, with no existing draft or voice to preserve. I'm building from the overlay mechanic only and inventing no proof. ## Hero (shared version) **Headline** Pick a time with both calendars in view. **Subhead** Send a booking link. The person you're meeting layers their own calendar over your open slots and picks a time that fits both of you. **Primary CTA** Create your scheduling link **Proof line (under CTA)** [NEED: real customer count, logos, or a named quote. Ideally one indie and one enterprise name.] ## Alternative headlines - **A:** Pick a time with both calendars in view. *Rationale: it describes the mechanic as a picture. It passes "Now you can…" and makes no claim either audience would read as a red flag.* - **B:** Book meetings where the other person can check their calendar too. *Rationale: it puts the invitee's experience first, which is the fairness angle. It's longer and slightly less visual.*
Show the rest (23 more lines)
- **C:** The scheduling link your invitee can check against their own calendar. *Rationale: it fits the "{category} for {audience}" formula and is the most literal, but the least emotional.* ## The indie/enterprise problem One page can serve both, but only if the hero avoids words that split them. "Move fast" reads as immature to enterprise buyers, and "enterprise-grade" reads as bloated to founders. The shared hero above talks only about the mechanic, which both groups value. Fairness works for a founder booking a customer call and for an ops team booking external vendors or candidates. If you can split traffic (separate URLs, ad groups, or a persona toggle), swap only the subhead and secondary CTA: **Indie founders** - Subhead: Send a link, and your invitee sees their own calendar next to your open slots. You skip the "does Thursday work?" thread and look organized doing it. - CTA: Create your scheduling link - [NEED: free plan or trial terms, so the CTA can say it] **Enterprise ops teams** - Subhead: Every external invitee sees their own calendar beside yours when they book, so conflicts are visible before they pick a time. - CTA: Book a demo - [NEED: confirm you have a sales-led path. If not, keep the self-serve CTA.] ## Open items before this ships 1. **Privacy of the overlay.** Enterprise buyers will ask first whether the host can see the invitee's event details. If the answer is no, that's a strong line for the subhead, but I can't write it until you confirm. 2. **Enterprise credibility.** I left out security and compliance claims. Send me certifications, SLAs, or admin controls you actually have and I'll add a proof line for that variant. 3. **Outcome claims.** I avoided "fewer reschedules" and "faster booking" because nothing here supports them. Any usage data, even from a pilot, would let me write a stronger subhead.
without
# Above-the-fold copy ## Recommended **Eyebrow:** Scheduling, minus the power imbalance **Headline:** **Scheduling that meets in the middle.** **Subhead:** Send a link, and your invitee overlays their own calendar on yours. You both see the overlap and pick a time that works for both of you, not just the person who sent the link. **Primary CTA:** Start free **Secondary CTA:** Book a demo **Microcopy under CTAs:** Connects to Google, Outlook, and iCloud. Set up in 2 minutes. **Three proof points (below CTAs):** 1. **Both calendars, one view.** Invitees see where your free time overlaps with theirs. They see only free/busy, never your event details.
Show the rest (32 more lines)
2. **Built for one call or ten thousand.** Whether you're booking a customer chat or coordinating across departments, the experience stays just as simple. 3. **Ready for your team.** SSO, admin controls, and routing rules for when "just a link" needs to scale. **Hero visual:** A split-screen calendar with two translucent color layers, one for the host and one for the invitee. The overlapping slots glow, with a cursor about to click one. --- ## Alternate headlines - **A scheduling link that goes both ways.** (Most literal, clearest differentiator) - **Pick a time that's fair to both of you.** (Warmest, most human) - **Stop sending availability. Start sharing it.** (Punchier, more opinionated) - **The scheduling link your invitees won't resent.** (Playful, better for founders) --- ## Why this works for both audiences - **The headline sells the shared idea, not the persona.** Fairness and mutual respect matter to a solo founder booking a investor call and to an ops lead booking client QBRs. - **The subhead stays concrete.** It describes the mechanic so nobody has to guess what "fair scheduling" means. - **Dual CTAs do the segmenting.** "Start free" serves self-serve founders, and "Book a demo" serves enterprise buyers. Neither has to hunt. - **The proof points move from individual to organizational.** The order goes personal, then scalable, then enterprise-ready, so each reader finds themselves. ## Optional: audience toggle If you want to personalize further, add a small toggle under the subhead, **For solo operators | For teams**, that swaps only the proof points and secondary CTA. Keep the headline constant so the core idea lands the same way for everyone. --- **Two things to confirm before shipping:** - I assumed invitees see only free/busy blocks. If that's not how it works, fix proof point 1, since privacy is the first objection people will have. - I left out stats and logos. If you have a credible number or recognizable customers, add one line of social proof right under the CTAs.

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.

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