langchain-ucp 0.1.0

LangChain toolkit for Universal Commerce Protocol (UCP)

LangChain UCP

LangChain toolkit for Universal Commerce Protocol (UCP).

Overview

langchain-ucp provides LangChain tools and toolkit for building AI agents that can interact with UCP-compliant merchants.

Installation

pip install langchain-ucp

Quick Start

from langchain_ucp import UCPToolkit
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

# Create toolkit
toolkit = UCPToolkit(merchant_url="http://localhost:8000")

# Create agent
llm = ChatOpenAI(model="gpt-4o")
agent = create_react_agent(llm, toolkit.get_tools())

# Run agent
result = await agent.ainvoke({
    "messages": [{"role": "user", "content": "I want to buy some red roses"}]
})

Available Tools

Tool	Description
search_shopping_catalog	Search the product catalog
add_to_checkout	Add products to cart
remove_from_checkout	Remove products from cart
update_checkout	Update product quantities
get_checkout	View current cart
update_customer_details	Add buyer info and address
start_payment	Prepare checkout for payment
complete_checkout	Complete purchase
cancel_checkout	Cancel checkout
get_order	Get order details

License

Apache License 2.0