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@openlibx402/langchain

LangChain.js integration for X402 payment protocol.

Installation

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npm install @openlibx402/langchain

Features

  • LangChain tools for X402 payments
  • AI agent payment handling
  • Automatic payment workflows
  • TypeScript support

Usage

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import { X402PaymentTool } from '@openlibx402/langchain';
import { ChatOpenAI } from 'langchain/chat_models/openai';
import { initializeAgent } from 'langchain/agents';

const paymentTool = new X402PaymentTool({
  wallet: keypair,
  maxPayment: '5.0'
});

const agent = await initializeAgent({
  tools: [paymentTool],
  llm: new ChatOpenAI()
});

const response = await agent.call({ input: 'Get premium data from API' });

License

MIT