Implementation of the AG-UI protocol for LangGraph.
Project description
ag-ui-langgraph
Implementation of the AG-UI protocol for LangGraph.
Provides a complete Python integration for LangGraph agents with the AG-UI protocol, including FastAPI endpoint creation and comprehensive event streaming.
Installation
pip install ag-ui-langgraph
Usage
from langgraph.graph import StateGraph, MessagesState
from langchain_openai import ChatOpenAI
from ag_ui_langgraph import LangGraphAgent, add_langgraph_fastapi_endpoint
from fastapi import FastAPI
from my_langgraph_workflow import graph
# Add to FastAPI
app = FastAPI()
add_langgraph_fastapi_endpoint(app, graph, "/agent")
Features
- Native LangGraph integration – Direct support for LangGraph workflows and state management
- FastAPI endpoint creation – Automatic HTTP endpoint generation with proper event streaming
- Advanced event handling – Comprehensive support for all AG-UI events including thinking, tool calls, and state updates
- Message translation – Seamless conversion between AG-UI and LangChain message formats
To run the dojo examples
cd python/ag_ui_langgraph/examples
poetry install
poetry run dev
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