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Connect Flowgear MCP to ChatGPT

This document describes the steps to connect a Flowgear MCP Server to ChatGPT.

Requirements

  • ChatGPT plan with Custom MCP Connectors (MCP) - Custom connectors are available to Pro users and to Business, Enterprise, Edu workspaces. ChatGPT Plus only supports custom connectors on ChatGPT Web. Some connectors are unavailable in the EEA, Switzerland, and the UK. See more information here: Connectors in ChatGPT
  • ChatGPT plan with Developer Mode - Available in beta to Pro and Plus accounts on the web.
  • MCP Server Support enabled on Flowgear - Your Tenant needs to be configured as a remote MCP Server to be able to connect to ChatGPT. See more at Flowgear MCP Server.

Steps

  1. Sign in to ChatGPT.

  2. Enable Developer Mode - Navigate to the settings page by clicking on your profile icon and selecting "Settings" from the dropdown menu. Once there, click on the "Connectors" section in the sidebar. Then, click on "Advanced". Ensure that "Developer mode" is enabled.

  1. Create the Flowgear MCP Connector - Navigate to the settings page by clicking on your profile icon and selecting "Settings" from the dropdown menu. Once there, click on the "Connectors" section in the sidebar. Then, click the "Create" button. Configure your Connector as desired, with an appropriate name and an optional icon & description. The MCP Server URL is predetermined based on the Site and Environment Host name. The Host name can be retrieved by navigating to the Environments section in Site Settings in the Flowgear Console and has the following structure: https://{environmenthostname}/mcp. Ensure that "OAuth" is selected for the Authentication. Then, tick that you trust this application, and click "Create".

  1. Connect the MCP server (Complete Authentication) - Follow the authentication prompts provided by the server.

  1. Open a new chat. Enable Developer Mode on this chat by clicking the "+" button, then "More", and clicking "Developer Mode". This gives you access to custom MCP Connectors on this chat.

  1. In the chat, click the "Add sources" button, and enable the Flowgear MCP Connector you created in Step 3 as a data source. Enable the Flowgear MCP Connector data source. This is only possible if Developer Mode is enabled.

Now, you should have successfully connected ChatGPT to your remote Flowgear MCP Server, and can explore its capabilities in your conversations. For ChatGPT, you may need to explore different prompting techniques to call the correct tools. You can choose to remember the approval or denial choice for a given tool for a conversation, which means it will apply that choice for the rest of that conversation. Any new conversations will prompt for that confirmation again. Refreshing the same conversation will also prompt for confirmation again on subsequent turns.

See also

Flowgear MCP Server
Enable a Workflow as a MCP Tool
Connect Flowgear MCP to Claude

Read more

Model Context Protocol
ChatGPT Developer Mode - Full MCP client access for connectors and tools.