You’re 404 in ChatGPT.

four04 builds the product feed that AI shopping assistants read, from your BigCommerce or Shopify catalog, and keeps it fresh every day.

Get a free feed check

Why a feed matters

Shoppers now ask an assistant what to buy, and it answers from product feeds. A store with no feed is a store the answer never mentions.

Shelves of bottled peppers and sauces with handwritten price cards at a market stall

How it works

We read your catalog.

Your store record

Name: Oil Drain Gasket for GT Series Turbocharger
SKU: GSK-008
Price: $6.99
Stock: In stock
Description: HTML, 2 paragraphs
Images: 1 photo

Read-only. We never change your store.

We map every product.

The same product as a feed row

{
  "item_id": "GSK-008",
  "title": "Oil Drain Gasket for GT Series Turbocharger",
  "description": "Oil drain/return gasket that goes
    between the turbo oil outlet and drain flange.",
  "url": "https://example-store.com/oil-drain-gasket",
  "brand": "Example Brand",
  "seller_name": "Example Store",
  "image_url": "https://example-store.com/gasket.jpg",
  "availability": "in_stock",
  "price": "6.99 USD"
}

We check every row.

Checks on this row

All 9 required fields present
Price matches the product page
Image is a JPEG or PNG that loads
Item ID is unique
Another product: no description. Left out, and listed in your report.

We refresh it daily.

Example daily run

Catalog read: 65,153 rows
Prices and stock: Updated
Schema errors: 0
Left out: Listed with reasons
Sent to the assistant: Full snapshot

Tested on a live catalog

We built it on a live catalog of 65,153 products. Every row passes 9 required-field checks with 0 errors, and each product we have to leave out comes with the exact reason, so you can fix it.

What you get, in plain terms.

A mechanic working on a motorcycle in a workshop with shelves of parts behind him

Included with the service
Feed	Built for ChatGPT product discovery	Daily
Report	Products left out, and why	Every run
Review	Parts marketplaces tend to reject	Flagged
Platforms	BigCommerce and Shopify	Both
Access	Read-only to your catalog	No changes
Price	Quoted after the free check	Ask

Questions stores ask.

What is a product feed?

A structured file listing every product with its title, price, image, stock and link. AI shopping assistants read it instead of guessing from your web pages.

Will ChatGPT definitely show my products?

No one can promise that. A clean feed is what gets you considered. Which products appear, and in what order, is the assistant’s decision.

Do I need OpenAI’s approval?

Yes. OpenAI currently takes product feeds from approved partners, so you apply. We prepare the feed and walk you through the application, but approval is theirs to give.

Is this advertising?

No. A feed is how your catalog gets read. We do not buy ads for you.

Do you change anything in my store?

No. We only read your catalog, and everything we build lives outside your store.

What if some of my products get rejected?

You get a list of each product we left out and the reason. Parts that marketplaces tend to reject, such as emissions-related items, are flagged for you to decide.

A starry sky above a dark tree line at dusk

Found yet? Or still 404.

Free feed check or Ask a question

Either way you get a reply from a person, usually within a day.