LangChain and Flutter / Dart

[kizombaciao]

Given that currently LangChain doesn't work with Flutter, which is based upon Dart language, is there a work around I can investigate to be able to use LangChain from Flutter? Can I do it through LangChain.js?

[jacobtt21]

I'm not super familiar with Flutter, but I am assuming you can set up some backend server using express and langchain.js and maybe connecting the two?

[kizombaciao]

Can you elaborate a bit more conceptually. I'm not that familiar with javascript.
Would it possible to use FastAPI along with LangChain? And I just have to make http request to the API.

[jacobtt21]

I'm sure you would be able to use FastAPI (not completely sure), but using express you should be able to set up a REST api and just make calls to it. In fact, if you're more comfortable with python you could probably use flask and the langchain python library and do the same.

[TafadzwaD]

Can you elaborate a bit more conceptually. I'm not that familiar with javascript. Would it possible to use FastAPI along with LangChain? And I just have to make http request to the API.

@kizombaciao Yes you can use FastAPI along with LangChain. In summary, you can set up a server using FastAPI to handle HTTP requests, and then make HTTP requests from your client-side application (Flutter in this case) to interact with the FastAPI server, which in turn communicates with LangChain.

[davidmigloz]

There's a LangChain port in Dart that you can use in your Flutter apps:

• https://github.com/davidmigloz/langchain_dart

[itsmoeenahmad]

@kizombaciao You will use the langchain in your flutter app using the Langchain package, which is available for flutter and dart: [https://pub.dev/packages/langchain](Langchain Package On PubDev)
Check it out and also try to read its docuementation & also all about more packages which are needed for langchain is alrady published by the same organization who make this langchain package