ChatGPT

Install the SellerSheet plugin in the ChatGPT desktop app — the skills and the MCP server together — or add the server on chatgpt.com, then connect with a browser sign-in.

In the ChatGPT desktop app, the SellerSheet plugin brings the skills and the MCP server in one step. Without the desktop app, chatgpt.com takes the server by URL, in developer mode.

Prerequisites

A SellerSheet account with a connected store — Connect your store.
The ChatGPT desktop app. For chatgpt.com instead: a paid ChatGPT plan, because developer mode is available on paid plans.

Step 1: Copy the SellerSheet MCP URL

https://sellersheetai.com/mcp

You won't paste it for the plugin: the plugin carries the server. You need it only on chatgpt.com.

Step 2: Add SellerSheet in ChatGPT

In the desktop app, add the GitHub repository as a marketplace, then install the plugin from it:

Open Plugins → Add → Add a marketplace.
Enter the repository as Source, leave the other fields empty and select Add marketplace:
```
sellersheetai/sellersheet-skills
```
Select + (Install plugin) on the SellerSheet plugin.

No desktop app? On chatgpt.com (the server without the skills):

Open Settings → Apps → Advanced settings and turn on Developer mode.
Open Workspace settings → Apps → Create. Name it SellerSheet, paste https://sellersheetai.com/mcp as the MCP Server URL and set Authentication to OAuth.

In the desktop app, connect SellerSheet when prompted: your browser opens SellerSheet; click Allow, then start a new chat. On chatgpt.com, sign in to SellerSheet when the browser asks, click Allow, then enable it in a chat.
Ask: "Which stores can you see?" Your agent calls get_user_context and lists your store refs, such as myStore-US, with your plan and each store's status. Every session should start there.