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💡How to Build ChatGPT Apps with Widgets using the ChatGPT Apps SDK and Next.js 🥶⚡

Shrijal Acharya on November 03, 2025

With the recent release of ChatGPT apps, especially the ChatGPT Apps SDK, developers can now build apps that run directly inside ChatGPT. 🤯 Curren...
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shemith_mohanan_6361bb8a2 profile image
shemith mohanan

This is 🔥 — finally a clear walkthrough of building ChatGPT apps with widgets! The Ngrok + Rube MCP setup part was especially useful. Can’t wait to experiment with the SDK and see how far it can go with custom integrations. 💪⚡

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Shrijal Acharya Composio

Thank you! ✌️ Please give it a shot.

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Shekhar Rajput

Great read. How's it working behind the scenes in ChatGpt?

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Aavash Parajuli

It's a bit complex, everything is handled by Ngrok to tunnel the localhost network to the internet. Don't dive this deep. just understand that Ngrok is "hosting" your project to the internet temprorarily so, now since it's on the internet, chatgpt can access it without any issues. You can use Netlify, Vercel, as he said, but that's an overkill.

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Shrijal Acharya Composio

If you're deep into learning network, learning the internals of Ngrok would be super helpful, but if not, what Aavash has said is the way.

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Shrijal Acharya Composio

Let me know if this was helpful and what app ideas you have for ChatGPT.

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Mateo

Interesting stuff. But this is going to be just another HYPE!!!!

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Mateo

Nobody wants to give an app access to all their apps. ChatGPT is failing miserably at this one.

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Shrijal Acharya Composio

Depends

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Debajyati Dey

Okay, this is something really cool. Great job on this Shrijal!

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Shrijal Acharya Composio

Glad this was helpful, Deb 🙌