Remote Agentic AI Backend with LangServe, LangGraph consumed as RemoteRunnable in NextJS with AI/RSC

[elvenking]

First of all thank you @developersdigest for this excellent youtube tutorial and repo.

Please take following as an idea and potential feature request.

I feel like it is not ideal to mix all the AI logic with the web app. I would like to see some stable example of separation of concerns of "complex AI backend" and consumer NextJS web app.

Imagine following setup of Answer Engine

Backend:

• Python - as it is lingua franca of LLM and the better part of LangChain libs
• LangServe (with LCEL streaming) as API
• LangGraph for complex state & process management and tool invocation
• Persistence of history (graph) e.g. in EdgeDB or Zep
• Rate limiting
• Semantic Caching

Frontend:

• NextJS app
• Streaming AI backend consumed as RemoteRunnable of LangChain
• Vercel AI SDK with AI/RSC for streaming React components from AI backend
• Able to stream intermediate agentic results / graph state from remote backend

There are multiple requests for such setup and nobody came with a stable solution

I have filled similar request to Vercel AI SDK repo:
https://github.com/vercel/ai/discussions/1506

[developersdigest]

Hi @elvenking - thanks for your thoughtful feature request here.

I am working on a feature to be able to scope and interact with third party tools my aim is for it to be framework + programming language agnostic with these features. I am starting with building out '@' commands where you can use that to pull up in the UI of your configured workflows/agents/tools/specific llm providers + models.

A small sneak peak is here: https://x.com/Dev__Digest/status/1795626592544399571

You could imagine being able to:

'@Langserve - tool to do xyz'
'@langgraph - agent do xyz'
'@CrewAI - do xyz'

etc.

In terms of changing the entire backend to be Python, I have no plans to do that currently.

In terms of Database support that will be coming hopefully early summer - but my plans with most features moving forward is that I want to build it in a way where most things are optional.

I hope to be able to help support most of what you are asking for here - it might not be quite what you were looking for but I hope it is in the direction that you are interested in seeing a project implement.

[elvenking]

'@' looks cool :)

Thank you for update