Can I use this sdk on frontend when backend not using it?

[jellli]

If there are any existing issues, I apologize. I have been searching for an appropriate answer all morning and have not found one, so I am here to request help.

I currently have a backend that returns values in compliance with the OpenAI standard, but this backend does not use this SDK. I have tried to use useChat only on the frontend, but the messages are not being updated. I believe it is because the API return values do not match the preset structure. I would like to ask if anyone has done something similar? Is it feasible? Any help would be greatly appreciated.

[patelvivekdev]

You can use useChat as long as you follow stream-protocol from any backend

Example with Python and FastAPI.
https://github.com/vercel-labs/ai-sdk-preview-python-streaming

[jellli]

Thank you for the reply, but my situation is somewhat special. My backend is an external general-purpose API, and I am unable to make any changes to it. It seems that a great deal of effort would be required to adjust the return values to comply with the stream-protocol format using a middleware. Have I missed something? Are there any utility functions that can help me process the data in the middleware?