Developer mode custom MCP connectors are no longer available in chatGPT in Developer Mode | OpenAI | Page 1

topaz quailBOT Oct 4, 2025, 7:23 PM

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Reported by @nova mica

Bug Report: Developer mode custom MCP connectors are no longer available in chatGPT in Developer Mode

`Steps to Reproduce`

Enable Developer mode for chatGPT plus
Add a custom MCP connector (Mine are all unauthed because I own them, I don't know if it also happens with authed connectors)

`Expected Result`

The developer mode connector shows up in the + menu

`Actual Result`

Only built in connectors are shown

`Environment`

Linux Ubuntu, on both chrome and firefox

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Additional Information

Please provide relevant details to help resolve the issue, such as:

ChatGPT Shared Link (if applicable).
Screenshots or videos demonstrating the problem.

-# ➜ Need to contact support? Visit the OpenAI Help Center.

nova mica Oct 4, 2025, 7:24 PM

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My connectors I was using:

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sinful flame Oct 6, 2025, 2:25 PM

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Same here :-(((

elfin umbra Oct 6, 2025, 11:00 PM

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they eventually showed up for me but do not work https://github.com/openai/openai-apps-sdk-examples/issues/1

GitHub

openai/openai-apps-sdk-examples

Example apps for the Apps SDK. Contribute to openai/openai-apps-sdk-examples development by creating an account on GitHub.

nova mica Oct 6, 2025, 11:30 PM

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THEY're back!!!!!!!

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I made all of mine. Let's see if they work!

nova mica Oct 7, 2025, 12:45 AM

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https://chatgpt.com/share/68e46288-4228-8004-b3fd-84cd9628d210 Doesn't seem like it.

ChatGPT

ChatGPT - List tools

Shared via ChatGPT

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https://chatgpt.com/share/68e46328-b120-8004-9f65-d3295a1b14e2

ChatGPT

ChatGPT - List tools

Shared via ChatGPT

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Some of those built in tools I was only vaguely familar with.

elfin umbra Oct 7, 2025, 5:27 AM

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they show up in the list but it can't call them

wanton forge Oct 7, 2025, 10:56 AM

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same issues, forwarding this here

elfin umbra Oct 7, 2025, 5:39 PM

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they have responded to the github issue and are looking into it. must be some bug that makes it so it only works for employees otherwise this would have been caught before release i would think.

wanton forge Oct 7, 2025, 5:43 PM

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and/or only with partners

wanton forge Oct 7, 2025, 7:47 PM

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update

Screenshot_2025-10-07-22-45-14-777_com.android.chrome.png

vocal vessel Oct 8, 2025, 4:24 AM

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Guys, it seems to be working!

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I'm able to call my MCP on android just fine 🎉

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wanton forge Oct 8, 2025, 4:26 AM

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vocal vessel I'm able to call my MCP on android just fine 🎉

wait is it possible to enable developer mode on android?

vocal vessel Oct 8, 2025, 4:27 AM

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That's the cool part

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I've been struggling with this on mobile. I've been keeping the chatgpt PWA on my home screen for testing...

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I've been waiting for this for a long time

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Another added bonus: the GitHub connector now seems to be working by default in chat as well!!

nova mica Oct 8, 2025, 5:13 AM

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can confirm

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working

wanton forge Oct 8, 2025, 5:15 AM

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vocal vessel I've been struggling with this on mobile. I've been keeping the chatgpt PWA on m...

well I can't see anything to enable it

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I had to use web to try

wanton forge Oct 8, 2025, 5:16 AM

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nova mica can confirm

yeah works for me too

nova mica Oct 8, 2025, 6:05 AM

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It works now, and I can use MCP in my projects 😄

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and I can just add it to an existing chat... they were so broken before.

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big ups to the devs for fixing it and making it work better.

#Developer mode custom MCP connectors are no longer available in chatGPT in Developer Mode