A presell page for every ad you run.

Coldskim is an agent that turns a product URL into a complete advertorial or listicle: researched, on-brand, every claim sourced, live in ten minutes.

Built for brands sending paid traffic to Shopify
Magic SpoonRidgeCometeerBrooklinenJones Road
Sound familiar?

This week, you launched five new ads.

And every one of them lands on the same product page. It’s not your fault. A page per angle takes a copywriter, a designer, a developer, and a week you don’t have between tests.

“We had one advertorial that worked. We ran it for eight months because nobody had time to write a second one.”

FounderDTC supplements

“Every new angle was a $2k agency invoice and two weeks. So we tested fewer angles.”

Head of GrowthSkincare brand

“The ad said one thing, the PDP said another. Message match was zero and CPA showed it.”

Media buyerPerformance agency

“I’d draft the listicle in ChatGPT, then spend a day making it look like our brand. Then I’d stop.”

FounderHome goods
placeholder quotes and names · swap for real interview quotes before launch

Stop guessing which angle converts. Test it.

Paste a product URL. Coldskim reads the product, the reviews, and the brand, ranks the angles worth a page, writes and builds the page, and publishes it to a link your ad set can use today.

1

Paste a URL.

Product page, reviews, offer, brand. Ten minutes and Coldskim knows what your customers already believe.

2

Coldskim ranks the angles, writes the page, sources every claim.

Three angles with the evidence behind each. Anything without a source comes back as a change you approve, with the reason.

3

Publish. Point the ad at it.

A hosted link with your domain, UTM-ready. Comment on anything to change it. The next variant drafts itself.

The most complete presell stack you can run. Built to bring CPA down.

Advertorials, listicles, comparison pages, a brand kit, a claims ledger, a comment-based editor, hosted publishing, and an agent you can drive from Claude or Codex. Everything between the click and the cart.

Advertorials

Story-led pages for cold traffic. Educates, proves, frames the product, then hands off to the PDP.

Listicles

Skimmable, benefit-led pages for people who scroll. Five reasons, one CTA.

Comparison pages

You versus the box they already buy. Figures from labels, not adjectives.

Sourced claims

Every claim traced to a label, a page, or a review. No source, no claim. Nothing invented.

Brand kit

Colors, type, voice, products, and offers extracted from your site once. Every page inherits it.

Comment to edit

Leave a comment on any element. The agent makes the change and shows you the diff.

Hosted publishing

Your domain or ours. Fast on mobile, UTM-ready, disclosure block on by default.

Agent access

Build in the web app, Claude, or Codex. Same agent, same brand memory, same output.

More angles

A page per ad instead of a page per quarter. Test the hook, the audience, and the offer separately.

FounderDTC nutrition · placeholder

Lower CPA

“Message match went from a guess to a score. CPA on cold audiences dropped within two weeks.”

Media buyerAgency · placeholder

Faster tests

Under ten minutes from URL to a page you’d actually send traffic to. Variants draft themselves.

Head of GrowthSkincare · placeholder

The presell page you keep putting off takes ten minutes.

You’ve stayed on the product page because a real presell means a copywriter, a designer, a developer, and a compliance pass. Coldskim does all four and shows its work.

“We don’t have a copywriter.” The agent writes it, in your voice, from your reviews.

It reads the product page and every review first. The copy uses what your customers already say.

“It’ll look off-brand.” Brand kit extracted from your site. Every page inherits it.

Colors, type, voice, and product images come from you, not from a template.

“Advertorials feel sketchy.” Disclosure on by default. Nothing invented. Ever.

No fabricated reviews, experts, ratings, or results. Claims without a source are removed before publish.

“We need an ad first.” You don’t. A product URL is enough.

Add the ad later and you get a message-match score for the page against that ad.

Works with
ShopifyMetaTikTokKlaviyoGA4Triple WhaleAny product URL

The things people ask before they test.

Something we missed? Write to us, a human answers.

No. A product URL is the only required input. Coldskim reads the product, reviews, offer, and brand from it. Add an ad later and you get a message-match score for the page against that ad.

Your ads are landing on a product page. Give them a presell in ten minutes.

Paste a product URL and Coldskim researches the angles, writes and builds the page, sources every claim, and publishes it. You approve, it ships.

Free to start, no cardURL to page in under ten minutesNo ad account required