Controlling link punch-out behavior in ChatGPT Apps

[andrew-manufact]

Is there another way to control the link punch-out when it comes to the ChatGPT Apps? This is referring to the full-screen button and the redirect from clicking the app name when it’s rendered inline.

Right now, they are controlled by ui.domain, but this is not ideal for cross-platform applications. For example, Claude requires that the ui.domain be a hash of the MCP URL, such as mcp.example.com/mcp, or the app will just refuse to render. But I don’t want ChatGPT to redirect to my MCP URL; I want it to redirect to my homepage at www.example.com.

Thanks for the help!

[casey-chow]

Are you referring to window.openai.setOpenInAppUrl({ href })? From docs:

[andrew-manufact]

Hello, I’m referring to the little label that says “MCP Apps Local”. If ui.domain is set, it’ll properly link to whatever page you set. Will this setOpenInAppUrl also control that?

[casey-chow]

Oh for that one, no, you can’t override it. You may want to experiment with _meta["openai/widgetDomain"] to see if it does what you need, since that is an OpenAI-only variant.