Interacting with Ethereum wallets

import { useSendCalls } from 'wagmi'
import { parseEther } from 'viem'

function BatchTransfer() {
  const { sendCalls } = useSendCalls()

  return (
    <button
      onClick={() =>
        sendCalls({
          calls: [
            {
              to: '0x70997970C51812dc3A010C7d01b50e0d17dc79C8',
              value: parseEther('0.01')
            },
            {
              to: '0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC',
              value: parseEther('0.02')
            }
          ]
        })
      }
    >
      Send Batch Transfer
    </button>
  )
}

import { useSendCalls } from 'wagmi'
import { encodeFunctionData, parseUnits } from 'viem'

function ApproveAndSwap() {
  const { sendCalls } = useSendCalls()

  const handleApproveAndSwap = () => {
    sendCalls({
      calls: [
        // Approve USDC
        {
          to: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
          data: encodeFunctionData({
            abi: erc20Abi,
            functionName: 'approve',
            args: ['0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D', parseUnits('100', 6)]
          })
        },
        // Swap USDC for ETH
        {
          to: '0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D',
          data: encodeFunctionData({
            abi: uniswapAbi,
            functionName: 'swapExactTokensForETH',
            args: [/* swap parameters */]
          })
        }
      ]
    })
  }

  return (
    <button onClick={handleApproveAndSwap}>
      Approve & Swap
    </button>
  )
}