# How to add an MCP server in ChatGPT

*Last updated: 2026-09-16*

> Turn on Developer Mode in ChatGPT on the web, add a custom app with the server URL, and sign in with OAuth. With Done Bear at mcp.donebear.com/mcp, ChatGPT can read and add tasks on your list.

**Endpoint:** `https://mcp.donebear.com/mcp`

**Requirements:** Business or Enterprise/Edu for write actions; Pro for read and fetch only. ChatGPT web is required.

## Add a custom MCP server

1. **Turn on Developer Mode.** In ChatGPT on the web, open Settings, then Apps, then Advanced settings, and turn on Developer Mode. On Business and Enterprise/Edu, an admin controls access.
2. **Add the MCP server URL.** Add a custom app and paste https://mcp.donebear.com/mcp, or any Streamable HTTP MCP server URL.
3. **Authorize with OAuth.** Approve the browser sign-in. You can revoke Done Bear’s OAuth scopes later.
4. **Use it on a real list.** Enable the connector from the tools menu, then ask ChatGPT to list today’s tasks or add one.

## Know before you connect

- Full write support is in beta on Business and Enterprise/Edu.

## Sources

- [OpenAI: Developer mode and MCP apps in ChatGPT](https://help.openai.com/en/articles/12584461-developer-mode-and-full-mcp-connectors-in-chatgpt)
- [AI task manager: agents on your list](/blog/ai-task-manager)

## FAQ

### How do I add an MCP server in ChatGPT?

On the web, turn on Developer Mode under Settings, Apps, Advanced settings, add a custom app with the server URL, and sign in with OAuth.

### Which ChatGPT plans support custom MCP connectors?

Business and Enterprise/Edu get full actions, including writes; Pro gets read and fetch only. Free and Plus cannot add custom MCP servers.

### What is Developer Mode and is it safe?

Yes, with limits. It lets you add custom MCP apps, and Done Bear’s OAuth access is scoped to your workspace and revocable.

### Can I add any MCP server in ChatGPT, or only Done Bear?

Any remote MCP server that speaks Streamable HTTP. Add it the same way.

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[Connect ChatGPT with MCP](/docs/mcp/get-started).

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