This guide covers ChatGPT’s custom connector support, which is available on some ChatGPT plans and may differ by account. If a step does not match what you see, your plan may not yet offer custom MCP connectors.
What you need
- A Cortex account.
- A ChatGPT plan that supports adding custom connectors.
1
Copy your workspace's connection URL
In Cortex, open any brain’s Connect page. Copy the connection URL (the same one the claude.ai and generic tabs show):
https://api.oncortex.ai/t/your-workspace-id/mcp.2
Add it as a connector in ChatGPT
In ChatGPT’s settings, find connectors, and add a custom connector using the Cortex URL. Cortex speaks the standard Model Context Protocol over a web connection, so ChatGPT can discover how to sign in on its own.
3
Approve the connection
ChatGPT sends you to Cortex to approve. The approval screen names the workspace and shows that the connector will act as you. Confirm, and the connector is live.
4
Test it
Ask ChatGPT to use the connector: “Search my Cortex brains and tell me what’s there.”
Good to know
- One connection covers every brain you can access in the workspace, at the roles you hold; results say which brain they came from.
- Manage or revoke it from Connected Agents on the Connect page.