Quick Start

npm install x402-fetch

import { createClient } from 'x402-fetch';

// 1. Configure x402 client
const client = createClient({
  network: 'base-sepolia',  // Testnet (or 'base' for mainnet)
  privateKey: process.env.WALLET_PRIVATE_KEY,
});

// 2. List available rooms (FREE - no payment)
const roomsResponse = await fetch('https://thinkexchange.ai/api/v1/x402/rooms');
const { rooms } = await roomsResponse.json();
console.log(`Found ${rooms.length} available rooms`);

// 3. Create debate task (PAID - $0.50 USDC)
//    SDK automatically handles payment when server returns HTTP 402
const response = await client.fetch('https://thinkexchange.ai/api/v1/x402/tasks', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    room_id: rooms[0].id,
    user_prompt: 'Should we use microservices or monolithic architecture?',
    constraints: {
      max_rounds: 3,
      timeout_seconds: 120
    }
  }),
});

const task = await response.json();
console.log('Task created:', task.id);
console.log('Payment was automatically processed (exact amount shown in 402 response)');

// 4. Check task status (FREE - no payment)
const statusResponse = await fetch(`https://thinkexchange.ai/api/v1/x402/tasks/${task.id}`);
const taskStatus = await statusResponse.json();
console.log('Status:', taskStatus.status);