Free skill for ChatGPT and Claude

Marketing copy your customers read to the end.

AI drafts read like AI: the hero is a feature list, the pricing page reads like a spec sheet, and customers scroll past both. Copywriting is one free file you add to ChatGPT or Claude. From then on, "write the homepage hero" or "rewrite our pricing page" comes back written like a professional copywriter wrote it, and your customers read it to the end.

Download Copywriting

Three plain-text files. Free, no signup, works in ChatGPT and Claude.

The download is free. What we sell is at the bottom of the page, with prices.

The same homepage hero, written twice.

Two copies of the same AI got the same brief for a fictional HVAC service in Manchester, NH, and the same request: write the homepage hero (H1, subhead, primary CTA, plus three short benefit lines). One had Copywriting. Both heroes are below, whole and unedited.

Without Copywriting

Marlow & Coe

Homepage hero

# Manchester's Trusted HVAC Partner for 24 Years

When your kitchen goes down at 6 a.m. on a Saturday and your line cook is standing in front of a walk-in that's holding 41 degrees instead of 38, you don't want a vendor. You want someone who picks up the phone. For 24 years, Marlow & Coe has been that call for restaurants, small manufacturers, and facility managers across Hillsborough and Rockingham counties.

A furnace isn't a part. It's a promise you made to the people who work in your building. Our job is to keep that promise standing, and we have been doing it since 2002.

**Request your 24/7 service call today →**

- 24/7 emergency response across Hillsborough and Rockingham counties, with a real person on the line in under 90 seconds. - Factory-trained NATE-certified technicians on every truck, stocked for same-day repair on Carrier, Trane, Lennox, and Mitsubishi systems. - A 24-year service record with restaurants, small manufacturers, and commercial property managers across southern New Hampshire.

With Copywriting

Marlow & Coe

Homepage hero

# 24 years keeping the heat on in your building. Manchester, NH, since 2002.

When the walk-in climbs past 41 degrees at 5 a.m., you need a real person on the phone before the line cook walks in. Marlow & Coe has been that call for restaurants, small manufacturers, and facility managers across Hillsborough and Rockingham counties since 2002. A NATE-certified technician is on the way inside four hours, day or night.

**Get a same-day service call →**

- 24/7 emergency dispatch across Hillsborough and Rockingham counties. A real person answers in under 90 seconds. - Factory-trained, NATE-certified technicians on every truck. Same-day repair on Carrier, Trane, Lennox, and Mitsubishi systems, with the common parts already on board. - Preventive maintenance plans written for restaurants and small manufacturers, so your air handler, rooftop unit, and walk-in cooler survive their next inspection without a surprise.

Same model on both sides, the same brief, the same request, one pass each. We read both transcripts afterward: the agent without the skill opened the brief and wrote its hero; the agent with it read Copywriting first, wrote, and checked its own draft against the guide before saving. Neither got help from anywhere else.Marlow & Coe is a fictional business invented for this test, so no real customer data appears on either side. Read the two openings against each other: one starts with the city and a promise, the other starts with a furnace that is a promise. Then read the two CTAs.

When to use this

Reach for it when a customer, a prospect, or a client has to read the page and act on it without you in the room. It works from whatever is real: a product, a price, a result worth reporting, a launch worth announcing. The day job is the writing that sells.

Use it for

Homepages and landing pages
The hero lands on what the customer can now do, with the proof underneath. The two heroes above are this exact job.
Pricing pages
Each tier reads as one clear offer, with the next step visible at the end. Buyers compare and choose without a sales call.
Feature pages and product pages
The feature ships as the benefit the customer gets, with the specifics that prove it. The page answers "what does this do for me" before the reader asks.
About pages
The story reads as a reason to trust the company, not a timeline of founding dates. Buyers remember the people, not the year.
Service pages
The service lands as the outcome the customer hires, with the specifics that prove the team can deliver. Quotes come from the inbox, not the contact form.
Sales pages and launch announcements
The offer reads as one clear deal, with the deadline, the proof, and the next step visible at the end. The page converts before the follow-up email goes out.

Not for

Reference docs and API docs
People search those. A narrative buries the line they came for.
Anything a reader will search rather than read
If the page exists to be queried, write it for the query.
A quick status answer
If one sentence answers it, send the one sentence.

How to use this

Install once. Then ask in plain words.

"Write the homepage hero for our HVAC company, using Copywriting." "Rewrite our pricing page so it sells." "Make this feature page read like a professional copywriter wrote it." That is the whole workflow.

ChatGPT

Skills are live on Business, Enterprise, Edu and Healthcare plans; an admin may need to switch them on. On Plus or Free, use a project instead: paste the guide into its instructions and add the two example files. Same result.

  1. 01

    Open the Skills page: pick Plugins in the sidebar and switch to the Skills tab, or go straight to chatgpt.com/skills.

    Plugins → Skills
  2. 02

    Click the plus button, then upload from your computer.

    + → Upload from your computerThe ChatGPT Skills page with the add menu open: Create with chat, Create with editor, and Upload from your computer.
  3. 03

    Select copywriting-skill.zip exactly as downloaded.

    ChatGPT expects a zip holding one folder with SKILL.md inside. That is exactly what the download is.

  4. 04

    Ask for the page in any chat.

Claude (web or desktop)

Works on Free, Pro, Max, Team and Enterprise plans.

  1. 01

    In settings, open Capabilities and check that cloud code execution is on. Skills need it.

    Settings → Capabilities → Cloud code execution and file creationThe Claude capabilities setting named Cloud code execution and file creation, switched on. Its description ends: Required for skills.
  2. 02

    In the sidebar, click Customize. It opens on your Skills list.

    Customize → Skills
  3. 03

    Click Add, then Upload a skill.

    Add → Upload a skillThe Claude Skills page with the Add menu open: Create with Claude, Write skill instructions, and Upload a skill.
  4. 04

    Select copywriting-skill.zip.

    Upload the zip exactly as downloaded. Do not unzip it first.

  5. 05

    Start a new chat and ask for the page.

On Claude Code? Unzip the download into your skills folder (~/.claude/skills) and it loads on the spot.

The paid part

Here is what we sell.

Everything above this line is free and stays free. Below it is what we sell. The prices are the prices, and the two subscriptions carry 30 days money back on the first month.

The readiness audit, done for you

Send us access to your repo. We run the nine-lane review, change nothing, and hand back the report with a 30 minute call on the three gaps to close first.

Who it is for
You have a product you charge for, or want to, and you would rather read the verdict than run the agents.
Price
$349One week
What you get
  • The report at docs/commercial-readiness.md: a verdict, a scorecard, every gap with the file to open and how to verify it
  • Legal, security, billing, support, marketing, operations and the rest, checked at once
  • A 30 minute call on the three gaps to close first
  • Nothing in your repo changed. The workflow prompt is yours to run afterward
The facts
The review is the one in the video. On our own product it found 87 gaps. The overnight run that followed was 148 commits and one pull request.
Our guarantee
If the review finds no gap worth your time, you pay nothing.

The first run, with Jason

We run the review on your repo together, on a call, and you leave with the report in your repo and the three gaps to close first.

Who it is for
You have the kit and a repo, and you would rather do the first run with someone who has done it.
Price
$9960 minutes
What you get
  • The review running on your machine, in your Claude Code
  • The verdict read together, and the three gaps picked
  • The workflow prompt set up so you can run it that night
  • The call recording
The facts
New. You would be one of the first. The run itself is the one in the video: 190 agents, 148 commits, one pull request.
Our guarantee
If the review will not run on your setup during the call, there is no charge.

Mica Social Media Analyzer

Your Instagram, answered by the ChatGPT or Claude you already use. Connect the account once, then ask in plain words what worked and what to post next.

Who it is for
You post on Instagram and you are done guessing from the Insights tab.
Price
$29/ month
What you get
  • Which Reels held attention, ranked, without opening Insights
  • Readings at 1, 24 and 72 hours after every post, so you see what happened while it was moving
  • Next captions written in the style of your most saved posts
  • Read only. It never posts or changes anything
The facts
7 days free with a card on file. About a dollar a day after that.
Our guarantee
30 days money back on the first month. Email guru@graniteai.co and we refund it.

Mica Social

An AI that writes, designs, checks and publishes a post to your Facebook and Instagram every day. You send a photo when you have one. It does the rest.

Who it is for
You know the feed should be alive every day and it is not.
Price
$49/ month
What you get
  • A finished post every day, with a photo made for it. Nothing to shoot
  • Timed to your local weather, season and county numbers
  • Five checks before anything publishes. No approvals, no calendar, no logins
  • Every photo you send becomes its own extra post
The facts
An agency running a daily feed bills $500 to $1,500 a month. 3 days free with a card on file.
Our guarantee
30 days money back on the first month. Email guru@graniteai.co and we refund it.

GraniteAI builds and runs AI systems for small and midsized businesses, out of Manchester, New Hampshire.

We use this on our own pages.

Homepage heroes, pricing tiers, and the feature pages on this site all go through it, and the guide got sharp because the copy had to survive an owner who quits reading at the first cliché. Take it, run it on your next page, and cut whatever does not fit.

Who made this

GraniteAI builds and runs AI for small and midsized businesses, out of Manchester, New Hampshire. Follow-ups that stop slipping, a feed that stays alive, and a ChatGPT that knows the market a business actually works in. That last one is the Mica Intelligence Engine: an owner asks what to charge or which town to work next, and the answer arrives backed by verified facts about their own county and trade, each carrying a source and a date. See the engine

The next free file

Copywriting decides how the page sounds. What goes in it still has to come from the business, and the AI you ask does not have those facts. Hand us your website and we email back a context kit that makes ChatGPT or Claude answer from your business instead of guessing about it. Free, and every file is yours to read before you load it.

When the owner of a local business writes their own weekly post, it slips to every other Tuesday. Mica takes that end of the job for trades like cleaning and roofing, drafting and publishing on a steady schedule so the page and the feed stay alive through the months nobody has an hour to sit down and write. See Mica