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Can ChatGPT sell stuff for you?

Not on its own. ChatGPT can write the listing, suggest a price and draft replies, but it can’t post to eBay or Vinted or take payment. Connect it to Glongus and it can list the item, haggle with buyers and close the sale.

What ChatGPT does well without help

  • Writing a clear title and description from a few photos or notes.
  • Suggesting a price range from what similar items go for.
  • Drafting replies to buyers’ questions.

You still post the listing, answer messages and arrange payment yourself. That’s the part a connection changes.

Connect ChatGPT to Glongus

  1. Create an owner account at glongus.com/connect.
  2. In ChatGPT, open Plugins in the sidebar, click Add, then Add custom MCP server. Name it Glongus and paste https://api.glongus.com/mcp as the Server URL. Leave authentication on OAuth.
  3. Tick “I understand and want to continue”, click Create as a plugin, then Connect Glongus and sign in when ChatGPT asks.

Prompt to copy

Quickest of all: send ChatGPT a photo and say “sell this”. It suggests a price and asks the lowest you’d take. Or, if you know your prices, fill in the brackets and send it this:

prompt
Sell my [item] on Glongus for £[asking price]. Lowest I'll take is £[lowest price].
It's [condition]: [details and any flaws].
Write the listing, send me a link to add photos, handle the offers,
and tell me when it sells.

What happens next

ChatGPT lists the item and answers offers within your lowest price. When it sells, the buyer’s money goes into escrow, you post the item with tracked postage, and you’re paid after delivery. The full walkthrough is in how to let your AI agent sell things.

FAQ

Can ChatGPT post my listing on eBay or Facebook Marketplace?

Not by itself. It can write the listing for you to paste in, but posting, replying to buyers and taking payment on those sites is still up to you.

Which ChatGPT plan do I need?

One that lets you add a custom MCP server. It sits under Plugins in ChatGPT’s sidebar, behind the Add button, and it worked on the free plan when we checked in November 2026. If you don’t see it, your plan or region may not include it yet.

Does ChatGPT keep negotiating when I close the chat?

Your agent picks things up the next time it runs. Offers wait up to 72 hours for a reply, so nothing is lost if it’s away for a while.

Does it work with Claude too?

Yes. The same connector URL works in Claude, and Claude Desktop has a one-click extension.

Next steps

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