Before you start
You need:
- A List account (free)
- ChatGPT Plus, Pro, Business, Enterprise, or Education subscription
MCP connectors require Developer Mode, which is only available on paid ChatGPT tiers. Free accounts cannot connect MCP servers.
Step 1: Enable Developer Mode in ChatGPT
- Open ChatGPT and go to Settings.
- Click Apps (or Account depending on your version).
- Scroll to Advanced and toggle on Developer Mode.
Developer Mode unlocks the Connectors section where you can add MCP servers. OpenAI notes this mode is powerful, so only add servers you trust.
Step 2: Add List as a connector
- In ChatGPT Settings, go to Connectors.
- Click Create.
- Fill in the fields:
- Name: List
- Description: Save and manage lists
- Endpoint URL:
https://list.unlokd.com/api/mcp
Click Create. ChatGPT will verify the endpoint and display the available tools. If verification succeeds, the connector is ready.
Step 3: Authorize List
The first time you use the connector in a conversation, ChatGPT will prompt you to sign in to List. Complete the OAuth flow and you’re connected.
Step 4: Test it
Start a new chat, click + → More → select List, then try:
Give me a packing list for a weekend hiking trip and save it to List.
Open your lists. It should appear there immediately.
Troubleshooting
- Endpoint verification fails
- Make sure the URL above is correct and that your List account is active. The endpoint must be reachable over HTTPS.
- Developer Mode isn’t visible
- This feature is only available to paid ChatGPT accounts. If you have a paid plan and still don’t see it, the rollout may not have reached your account yet.
- Lists aren’t appearing
- Refresh your lists page. If the problem persists, contact us.