Earn 0.5%
Every Swap

<!-- 1. Load the SDK -->
<script src="https://synchold.org/sdk/synchold-swap-sdk.js?v=1.2.0"></script>

<!-- 2. Initialise with your app key -->
<script>
  SyncHoldSwap.init("sk_your_app_key_here");
</script>

<!-- 3. Open the swap widget from any button -->
<button onclick="SyncHoldSwap.open({ tokenIn: 'WLD', tokenOut: 'USDC' })">
  Swap with SyncHold
</button>

import { useEffect } from 'react'

export function SwapButton() {
  useEffect(() => {
    const s = document.createElement('script')
    s.src = 'https://synchold.org/sdk/synchold-swap-sdk.js?v=1.2.0'
    s.onload = () => window.SyncHoldSwap.init("sk_your_app_key_here")
    document.head.appendChild(s)
  }, [])

  return (
    <button onClick={() => window.SyncHoldSwap?.open({ tokenIn: 'WLD' })}>
      Swap with SyncHold
    </button>
  )
}

<template>
  <button @click="openSwap">Swap with SyncHold</button>
</template>

<script setup>
import { onMounted } from 'vue'
onMounted(() => {
  const s = document.createElement('script')
  s.src = 'https://synchold.org/sdk/synchold-swap-sdk.js?v=1.2.0'
  s.onload = () => window.SyncHoldSwap.init("sk_your_app_key_here")
  document.head.appendChild(s)
})
const openSwap = () => window.SyncHoldSwap?.open({ tokenIn: 'WLD' })
</script>

// Load SDK dynamically
const script = document.createElement('script')
script.src = 'https://synchold.org/sdk/synchold-swap-sdk.js?v=1.2.0'
script.onload = () => {
  SyncHoldSwap.init('sk_your_app_key_here')
}
document.head.appendChild(script)

// Open from any event
document.getElementById('swap-btn').addEventListener('click', () => {
  SyncHoldSwap.open({
    tokenIn:  'WLD',
    tokenOut: 'USDC',
    onSuccess: (result) => console.log('Swap done', result),
    onClose:   ()       => console.log('Widget closed'),
  })
})

// npm install @synchold/worldchain-sdk viem
import { SyncHoldClient, TokenProvider, SwapProvider, VerifyProvider, TOKENS } from '@synchold/worldchain-sdk'

const client = new SyncHoldClient({ appKey: 'sk_your_app_key_here' })

// Balances
const tokens  = new TokenProvider(client)
const balance = await tokens.balanceOf(TOKENS.WLD.address, '0xUserWallet')

// Swap quotes (direct V2/V3 pools on World Chain)
const swap  = new SwapProvider(client)
const quote = await swap.quote(TOKENS.WLD.address, TOKENS.USDC.address, 10n ** 18n)

// World ID human verification — server-mediated, requires appKey
const verify = new VerifyProvider(client)
const result = await verify.verify('my-action', idkitProofResult)
if (result.ok) console.log('verified, nullifier:', result.nullifierHash)