# Connect Core to ChatGPT

Source checked: 2026-07-24
Official source: https://developers.openai.com/plugins/deploy/connect-chatgpt

During Core onboarding, choose ChatGPT and select `Copy address and open ChatGPT`. Core copies your personalized Secure server address and opens https://chatgpt.com/plugins. Keep the full address on your clipboard, including its `setup_attempt` query parameter, so Core can recognize this exact connection.

## 1. Turn on Developer mode

1. Open ChatGPT Settings.
2. Select Plugins.
3. Scroll to Developer mode at the bottom and enable it.

## 2. Add Core

1. Open Plugins and choose Create app (or Browse plugins → `+` if your account shows that path).
2. Enter `Core` for the name.
3. Add a short description, such as `Keeps my working context available across AI tools`.
4. Under Connection, choose Server URL.
5. Paste the complete Secure server address copied by Core.
6. Under Authentication, choose OAuth.

## 3. Approve the connection

1. Accept ChatGPT's acknowledgement and create the plugin.
2. Approve Core when the sign-in window opens.
3. Return to Core. The ChatGPT status changes to Connected after ChatGPT makes its first authenticated context check, which can take a few seconds. You can finish onboarding while Core waits.

## Troubleshooting

Use Server URL, not Tunnel. Core is already available online; Tunnel is for a server running on a private network or local computer.

If the URL is missing or no longer works, return to Core and reopen ChatGPT setup. Core will prepare a fresh personalized address when needed. Outside onboarding, the standard address is `https://core.gradien.ai/mcp/continuity`; the shorter `/mcp` address is an advanced server and is not the normal setup choice.

If the callback contains `invalid_scope` and says the client cannot request `openid`, report the complete callback URL once. Creating duplicate plugins will not fix an authorization-server error.

For OpenAI's current setup requirements, see [Connect your MCP server to ChatGPT](https://developers.openai.com/plugins/deploy/connect-chatgpt).