import { wrapFetchWithPayment, x402Client } from '@x402/fetch';
import { ExactEvmScheme } from '@x402/evm/exact/client';
import { privateKeyToAccount } from 'viem/accounts';

const account = privateKeyToAccount(process.env.PRIVATE_KEY);

const client = new x402Client()
  .register('eip155:8453', new ExactEvmScheme(account));

const paidFetch = wrapFetchWithPayment(fetch, client);

// 402 responses handled automatically
const response = await paidFetch('https://api.example.com/premium');

import { wrapFetchWithPayment, x402Client } from '@x402/fetch';
import { ExactEvmScheme } from '@x402/evm/exact/client';
import { createWalletClient, createPublicClient, http } from 'viem';
import { privateKeyToAccount } from 'viem/accounts';
import { base } from 'viem/chains';
import {
  EscrowScheme,
  createBalanceSelector,
  preferTokenPolicy,
} from '@agentokratia/x402-escrow/client';

const WETH = '0x4200000000000000000000000000000000000006';
const USDC = '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913';

const account = privateKeyToAccount(process.env.PRIVATE_KEY);

const walletClient = createWalletClient({
  account, chain: base, transport: http(),
});

const publicClient = createPublicClient({
  chain: base, transport: http(),
});

// Balance-aware: auto-picks token you can afford
const client = new x402Client(
  createBalanceSelector(publicClient, account.address)
)
  .register('eip155:8453', new ExactEvmScheme(account))
  .register('eip155:8453', new EscrowScheme(walletClient))
  .registerPolicy(preferTokenPolicy([WETH, USDC]));

const paidFetch = wrapFetchWithPayment(fetch, client);

const response = await paidFetch('https://api.example.com/premium');