curl --request POST \
  --url https://api.onswitch.xyz/swap/quote \
  --header 'Content-Type: application/json' \
  --header 'x-service-key: <api-key>' \
  --data '
{
  "amount": 100,
  "from_asset": "base:usdc",
  "to_asset": "solana:usdt",
  "exact_output": false
}
'

{
  "success": true,
  "message": "Swap quote fetched successfully",
  "timestamp": "2026-04-18T14:22:08.631Z",
  "data": {
    "expiry": "2026-04-18T14:37:15.000Z",
    "settlement": "Instant",
    "channel": "BLOCKCHAIN",
    "rate": 1,
    "fee": {
      "total": 0.5,
      "platform": 0.45,
      "developer": 0.05,
      "currency": "USDC"
    },
    "fee_inclusive": true,
    "source": {
      "amount": 100,
      "currency": "USDC"
    },
    "destination": {
      "amount": 99.5,
      "currency": "USDT"
    }
  }
}