Connect ChatGPT

ChatGPT only uses connectors that can change data in developer mode. OpenAI offers developer mode to Plus, Pro, Business, Enterprise and Education accounts, on the web. In a Business, Enterprise or Education workspace, an admin may have to allow it first.

Caution

OpenAI marks developer mode as elevated risk: it lets ChatGPT use any tool of the servers you add. Add only servers you trust, and read each change ChatGPT asks you to confirm.

Set it up on chatgpt.com

1. Open chatgpt.com in a browser on a computer.
2. Open Settings > Security and login and turn on Developer mode.
3. Go to Plugins and click + to create an app for a remote MCP server.
4. Enter a name, such as Zaaglijst Studio, and the URL https://zaaglijst.contact-534.workers.dev/mcp. Choose OAuth as the sign-in method, then create the app.
5. When ChatGPT sends you to the Zaaglijst Connect an AI assistant page, sign in if asked, check the names, and click Allow.

Use it in a chat

1. Start a new chat on chatgpt.com.
2. Open the + menu, choose Developer mode and select Zaaglijst Studio.
3. Write your brief. See Get good results.
4. ChatGPT asks you to confirm each change to a project. Check the input it shows, then confirm.

After the connector’s tools change, click Refresh on the app and start a new chat.

Web, desktop and mobile

	chatgpt.com	Desktop app	Mobile app
Turn on developer mode and add the app	Yes	Not documented	Not documented
Use the app in a chat	Yes	Not documented	Not documented
Open the Studio link	Yes	Opens in your browser	Opens in your browser or the installed app

OpenAI documents developer mode for the web only. If the desktop or mobile app does not offer Developer mode in the + menu, continue the chat on chatgpt.com. Your project is in the Zaaglijst cloud, so you can open the Studio link on any device where you are signed in.

Drawings

The connector returns each drawing as an image and, where the server offers it, as a link that works for 24 hours. If ChatGPT does not show the image, ask for the drawing link.

These steps were checked on 16 September 2026 against OpenAI’s developer mode guide. ChatGPT’s menus change often; the guide has the current names.

Related pages

• Design with an AI assistant: Connect Claude or ChatGPT to Zaaglijst Studio. The assistant designs timber frames in your cloud projects and you open the result in Studio.
• Choose a model: Which Claude or ChatGPT model to use for Zaaglijst Studio designs: a strong reasoning model for new frames, a faster one for small edits.
• Get good results: Write a brief an assistant can build from: sizes, levels, spaces and timber. Work in stages, ask for drawings and read the warnings together.
• Connect Claude: Add the Zaaglijst Studio connector to Claude on the web or Claude Desktop, switch it on in a chat, and use it on your phone.
• Design briefs to copy: Real briefs that assistants turned into complete timber frames: a tiny house, a forest house, two fishermen's houses and a forest cinema.