How to run your ChatGPT Sponsored Agent on your own brand agent

On September 16, OpenAI launched Sponsored Agents. A shopper sees your ad in ChatGPT, clicks it, and starts a conversation with an AI representative of your brand. They ask what they need to know, and when they are ready they follow a link to your site.

That representative is going to speak for you to shoppers at the exact moment they are deciding. So the question is who is behind it.

The answer should be your brand agent. Here is how you set that up with Syntrologie, and what you get from it.

What a Sponsored Agent has to do

A shopper who opens a Sponsored Agent has a real question. Does this table seat eight. Will this jacket work for a wedding and the office. Can it get here by Friday. Which of these two do I actually want.

To answer those well, the agent needs your catalog, your product knowledge, your policies, your live inventory and delivery, and a sense of how your products fit what people are trying to do. Then it has to pick the right products and show them in a way that makes the decision easy.

A general-purpose model with a product feed can describe your products. A brand agent sells them. That is the difference you are setting up.

Setup

1. Open your ChatGPT Ads account

Sign up at ads.openai.com. If you run on Shopify, install the ChatGPT Ads app from the App Store instead. It is live for US merchants now and rolls out to every market where ChatGPT Ads run on September 23. Your products sync through Shopify Catalog automatically. HubSpot customers can connect an Ads account from inside HubSpot.

This gives you the campaign, the ad, and the Sponsored Agent slot. Sponsored Agents are rolling out to advertisers in waves, so get the account in place now and your campaigns running, so you are in line when your account is turned on.

2. Connect your storefront to Syntrologie

Install Syntrologie on your store. On Shopify that is the app. On any other platform it is one script tag.

From there we ingest the two things the agent needs to know you: your catalog, with every variant, price and attribute, and your site’s own knowledge. Product descriptions, buying guides, size charts, FAQs, shipping and returns. This is first-party brand knowledge, and it is what separates an agent that represents you from one that summarises your homepage.

3. Connect the live systems

Inventory, delivery estimates, order status, store availability. The agent asks your systems directly instead of guessing from a feed that was true yesterday. If you are on Shopify, most of this comes with the app. Anything custom connects through the same integration the storefront uses.

4. Set how you sell

This is the part nobody else does. We build decision logic from your catalog and your brand knowledge: how products map to the goals shoppers describe, what constraints matter, how to compare, what to show first. You review it and adjust it. From then on the agent reasons the way your best salesperson does, at any catalog size, with no hand-mapped rules.

5. Put the brand agent behind your Sponsored Agent

The Syntrologie brand agent connects to ChatGPT over MCP, the same protocol OpenAI’s Apps SDK is built on. It is the same agent that runs your storefront, so the shopper in ChatGPT is talking to the same intelligence that runs your site. One agent, one set of knowledge, one set of decision logic.

6. Test with real questions

Take a week of questions from your support inbox and ask the agent every one of them. Those are the questions shoppers actually ask while deciding, and they are what the Sponsored Agent will be asked in ChatGPT. Fix what it gets wrong before a shopper does.

7. Go live, and let the click continue

When the shopper follows the link to your site, they land on your storefront, where the same agent is already running. They do not start over. The conversation they had in ChatGPT is the conversation your storefront finishes.

Why run it on your own brand agent

It answers from your knowledge. Shoppers do not trust store chatbots because they make things up. Your agent answers from your catalog, your policies and your live systems. Wrong answers in a sponsored conversation cost you the sale and the brand. Right answers close it.

It sells instead of describing. A shopper says they need an outfit for an outdoor wedding, under $500, jacket they can wear to work. The agent works the constraints, pulls from the catalog, checks stock and delivery, and presents the outfit. That is the job. Product data alone does not do it.

One agent on every surface. The agent you set up here is the agent on your storefront and the agent in every AI channel you open next. Claude connectors run on the same MCP connection. You build the intelligence once. Every new channel is a switch, not a project.

Live facts. Stock, delivery dates and availability come from your systems at the moment the shopper asks. The feed OpenAI has is a snapshot. Your agent is current.

The experience is visual. Where the surface allows it, the agent shows products, comparisons and assembled options as an interface, not six paragraphs of chat. Shoppers decide faster when they can see the choice.

You measure what matters. ChatGPT Ads reports views and clicks. Your brand agent reports what happened after: which conversations turned into orders, which products got picked, which answers converted. That feeds back into how the agent sells. Your Sponsored Agent gets better every week. A generic one stays the same.

You own it. The knowledge, the decision logic and the results live with you. They are not locked in a single ad platform’s configuration.

What to do this week

Open the ChatGPT Ads account. Get your campaigns running. Connect your store to Syntrologie and let the agent ingest your catalog and knowledge. Run your support inbox through it.

Sponsored Agents are the first time a brand gets an AI representative inside ChatGPT. The brands that win with it will be the ones whose agent actually knows how to sell. Set yours up now.