AI connections

Connect ChatGPT

ChatGPT on the web, with developer mode turned on. These steps connect it to the Main Team MCP server at https://mcp.main-team.org/mcp.

Connect

Turn on developer mode: Settings, Security and login, Developer mode. It needs a Plus, Pro, Business, Enterprise or Education plan, and a workspace admin may have to allow it.
Open chatgpt.com/plugins and select +.
03
Enter the name Main Team, a short description and the server URL, choose OAuth for authentication, and create it:
Server URL
```
https://mcp.main-team.org/mcp
```
Connect it: Main Team’s sign-in page opens. Then choose it in a chat when you want ChatGPT to use it.

ChatGPT asks you to confirm every action that changes data before it runs.

Main Team’s sign-in page opens at auth.main-team.org. Sign in the way you always do, tick the olympiads the connection should cover, and decide whether the app may change anything — reading only is the default. How a connection works.

Add the skills

The Main Team skills teach your agent how the server works: to say whose account it is on, to read before it changes anything, to preview and confirm, and never to help with an exam in progress. Agent skills lists them and how to add them to ChatGPT.

Verify

Ask your agent:

Which Main Team account am I connected to, and may you change anything?

It answers with your own name and role, the olympiads the connection covers and whether it may change anything. If any of that is not what you expected, disconnect and connect again.

Troubleshooting

There is no developer mode: Developer mode is only on the web, and only on the plans above. In a workspace, an admin decides whether members may use it.
Sign-in says this app is not allowed: A student account may connect only the verified apps: Claude apps, Claude Code, ChatGPT, Codex and VS Code. Teachers and partners may connect the others too.
The app asks you to sign in again: A connection ends after a time without use, at the end of its lifetime, when you disconnect it and whenever your password changes. Sign in again from the app.
A tool is refused and names your panel: Something that cannot be undone needs your app to ask you directly. When it cannot, the answer carries a link into your panel; do it there.