Connect ChatGPT

Add Bauhow as a custom MCP app in ChatGPT Developer mode.

ChatGPT adds custom MCP servers as apps. Setup takes place in the web app and currently requires a Pro, Plus, Business, Enterprise, or Education account.

Setup

Prepare Bauhow

Make sure MCP is enabled under Settings → Workspace → MCP server and copy the MCP server URL https://mcp.bauhow.com/mcp.

Enable Developer mode

In ChatGPT, open Settings → Security and login and enable Developer mode. An admin may need to allow this feature first in a managed workspace.

Create an app

Open Settings → Plugins or go directly to chatgpt.com/plugins. Select the plus button and create a Developer-mode app.

Enter the server

Use Bauhow as the name, paste the URL into MCP server URL, and choose OAuth as the authentication method. You do not need a client ID or client secret.

Authorize the workspace

Select Create. Sign in in the Bauhow window, choose the workspace on the Allow access page, and approve.

Use it in a chat

Open Developer mode from a chat’s plus menu and enable the Bauhow app for that conversation.

First test

Use only the Bauhow app. List the available Bauhow tools and explain in one
sentence which tools can change data.

You can then use an example prompt with a project ID.

Troubleshooting

The app shows no tools: Open the app details in ChatGPT and refresh its tool list.
OAuth does not start: Confirm that the URL is exactly https://mcp.bauhow.com/mcp and that OAuth is selected as the authentication method.
Workspace cannot be selected or access is denied: Have MCP enabled in the relevant Bauhow workspace and reconnect the app.
The app is missing in chat: Select Developer mode from the plus menu and explicitly enable Bauhow.

Source: ChatGPT Developer mode