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Enable Developer/Advanced Mode in ChatGPT

To connect custom MCP tools or apps, you must first enable Developer Mode (also known as Connectors / Advanced Tools) in ChatGPT.

  1. Open ChatGPT
  2. Click your User Icon in the bottom-left corner
  3. Go to Settings
  4. Open Connectors / Advanced Settings
  5. Turn Developer Mode ON

This enables registration of custom connectors or MCP servers.

Register an MCP Server in ChatGPT

Once your MCP server is up and running:

  1. Go to ChatGPT → Settings → Connectors
  2. Click Create New
  3. Select Custom Connector / MCP Server

Connector Configuration

Fill in the following details:

  • Name: Example: Pulse Docs
  • Description: Short description of what the connector does
  • MCP Server URL: Enter one MCP server URL per connector.
    Choose the appropriate URL based on the product:

Note

 A single connector supports only one MCP Server URL.> To use ADOC, Pulse, and ODP, create separate connectors, one for each MCP server.

  • OAuth Settings (if required): Configure only if your MCP server requires authentication
  • Trust the Connector: Mark the connector as Trusted (custom connectors are not verified by default)

Add the App in ChatGPT

After the connector is created:

  1. In the ChatGPT search bar, click ➕
  2. Select … More → Explore Apps
  3. Choose the app (for example, Pulse Docs)

You will be redirected back to the search bar.

  1. Search for the required details and start interacting with the app.

What This Enables

After registration, ChatGPT treats your MCP server like a native app:

  • Can call MCP tools directly
  • Can render UI components inside the chat
  • Can interact with users in real time
  • Supports richer, tool-driven workflows