ag-ui-langgraph 0.0.33

Implementation of the AG-UI protocol for LangGraph.

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