LangGraph Integration#

Hosted Demo

This example demonstrates how to use LangChain LangGraph with assistant-ui. It is meant to be used with the backend found at LangGraph's Stockbroker example: https://github.com/bracesproul/langgraphjs-examples/tree/main/stockbroker

Quick Start#

Using CLI (Recommended)#

npx assistant-ui@latest create my-app --example with-langgraph
cd my-app

Environment Variables#

Create .env.local:

LANGGRAPH_API_URL=http://localhost:2024
LANGCHAIN_API_KEY=
NEXT_PUBLIC_LANGGRAPH_ASSISTANT_ID=stockbroker

LANGGRAPH_API_URL is the LangGraph deployment URL the bundled /api/[..._path] proxy fetches from. LANGCHAIN_API_KEY is forwarded as x-api-key and can be blank for an unauthenticated dev server. NEXT_PUBLIC_LANGGRAPH_ASSISTANT_ID is the graph id (a key under graphs in your langgraph.json).

Run#

npm install
npm run dev

Features#