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OpenLibx402 LangChain

LangChain integration for X402 payment protocol.

Installation

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pip install openlibx402-langchain

Features

  • X402PaymentTool for LangChain agents
  • X402RequestsWrapper for automatic payment handling
  • Convenience function for creating X402-enabled agents

Usage

Using X402PaymentTool

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from langchain.chat_models import ChatOpenAI
from langchain.agents import initialize_agent, AgentType
from openlibx402_langchain import X402PaymentTool
from solders.keypair import Keypair

keypair = Keypair()

payment_tool = X402PaymentTool(
    wallet_keypair=keypair,
    max_payment="5.0"
)

agent = initialize_agent(
    tools=[payment_tool],
    llm=ChatOpenAI(),
    agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION
)

response = agent.run("Get premium data from https://api.example.com/data")

Using X402RequestsWrapper

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from langchain.agents import load_tools
from openlibx402_langchain import X402RequestsWrapper

requests_wrapper = X402RequestsWrapper(
    wallet_keypair=keypair,
    max_payment="1.0"
)

tools = load_tools(
    ["requests_all"],
    llm=ChatOpenAI(),
    requests_wrapper=requests_wrapper
)

agent = initialize_agent(tools=tools, llm=ChatOpenAI())

Convenience Function

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from openlibx402_langchain import create_x402_agent

agent = create_x402_agent(
    wallet_keypair=keypair,
    max_payment="5.0"
)

response = agent.run("Get premium data from API")

License

MIT