Build Your Shop's AI Analyst in ChatGPTGA4, Google Ads, Meta and your storeGA4, Google Ads, Meta and your store

Who Really Earned the Sale? In-depth guide to building your own AI analyst in ChatGPT that combines GA4, Google Ads, Meta and your store - and where it breaks.

a conversion in both

What you get (+1 bonus)

Four sources, one ChatGPT project.
Shopify's own plugin, Meta's connector added by its URL, a third-party connector for GA4 and Google Ads, or plain CSV exports, with the developer-only steps boxed so you can hand them over.
Rules ChatGPT reads first.
Project instructions, a definitions file on how each source counts a sale and a settings file, for a project with project-only memory. All three also come as a separate download, ready to fill in.
15 prompts, labelled by trust.
From what an order really costs to which orders GA4 missed: four SAFE lookups, eight VERIFY prompts that say what to check, and three that won't work without joined data.
A 20-minute trust test.
Five questions on one closed week, checked against each platform and scored, with a look inside ChatGPT's code to see whether the right numbers went in. Re-run it after a model change.
Where it breaks in ChatGPT.
Long app responses that can be cut short, Python that only sees what reached the chat, scheduled tasks that can't open your project files, and Shopify and Meta apps that can change your products and ads.
What it costs in hours.
A task-by-task estimate of setup and upkeep. Ours for a typical small shop: a day to set up properly, then two to four hours a month to keep it honest.
+1 bonus
An AI skill for Claude, ChatGPT, Gemini or Copilot
that helps you set up the analyst project, then runs the trust test and the monthly check on your own numbers.

Free · about 15 seconds

Who it's for, and who it's not for

A shop owner at a packing table surrounded by parcels looks from a laptop with a chat window to a printed list of the day's orders.

Who it's for

Online shop owners on Shopify, WooCommerce, Magento, PrestaShop, OpenCart or Shopware who run Google and Meta ads and want to ask ChatGPT one question across all of them.
Whoever runs marketing for the shop, in-house, at an agency or freelance, and has to explain on Monday why four tabs show four different numbers.
Anyone who has had ChatGPT give a confident total ROAS and wants a 20-minute way to check whether the answer holds up.

Who it's not for

Shops that already join store, ad and analytics data in a data warehouse such as BigQuery - you'll know most of what's in here.
Anyone without read access to the ad accounts and the store admin - you need it to connect each source and to check ChatGPT's answers in the trust test.

What's inside

PDF · About 40 min read

Honest note

The trust test proves ChatGPT reads your sources accurately. It can't prove your tracking is right, and Python can't fix the inputs: a cut-off app response or a purchase tag firing twice goes into the sum unchanged. Google's own servers need hosting or a tunnel set up by a developer, so most shops use a third-party connector for Google. Shopify's and Meta's apps can make changes, so approve read-only access where it's offered, as Shopify does, and confirm each change yourself. All hours are our estimates.

Free · about 15 seconds