> For the complete documentation index, see [llms.txt](https://developer.celigo.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.celigo.com/mcp/connect/chatgpt.md).

# ChatGPT

Connect Celigo Platform MCP to ChatGPT as a custom connector. Connecting a remote MCP server requires ChatGPT's **Developer mode** (beta), available on the Plus, Pro, Business, Enterprise, and Edu plans on the web. On Plus and Pro you enable it yourself; on Business, Enterprise, and Edu a workspace admin must turn it on.

## Prerequisites

* A ChatGPT plan with Developer mode (Plus, Pro, Business, Enterprise, or Edu), enabled for your account or workspace.
* An integrator.io user (see [Connect a client](/mcp/connect.md)).

## Connect

1. Open **Settings > Apps & Connectors**. Under **Advanced settings**, turn on **Developer mode** (beta).
2. Back in **Apps & Connectors**, select **Create** and enter:
   * **Name**: `Celigo`
   * **MCP server URL**: `https://api.integrator.io/celigo-mcp` — for another region, see [Pick your endpoint](/mcp/connect.md#pick-your-endpoint)
   * **Description**: a short line such as `Operate my integrator.io account` — ChatGPT uses it to decide when to reach for the tools.
   * **Authentication**: **OAuth**.
3. Create the connector and connect it. Your browser opens the Celigo sign-in page. Sign in and pick the account and environment the agent should work in.
4. Enable the connector for your chats or in a project.

> ChatGPT's connector form offers only OAuth or no authentication — there is no field for a bearer token or custom header. To connect with an API token instead, use a client that lets you set request headers (see [Connect a client](/mcp/connect.md)).

## Verify

Start a chat with the Celigo connector enabled and ask:

> List my connections.

ChatGPT calls `list_connections` through the connector and reports the result.