curl --request GET \
  --url https://api.onswitch.xyz/wallet/{wallet_id}/transaction/{reference} \
  --header 'x-service-key: <api-key>'

{
  "success": true,
  "message": "Transaction lookup successful",
  "timestamp": "2026-04-18T14:22:08.631Z",
  "data": {
    "reference": "f891a3c2-5e7d-4b91-8f62-0c4d1e9a7365",
    "transaction_hash": "0xd4c19f2e8a91b06357cef3049821ea47dc33a09ef12c8456f8ab2d9e0c7e51a3",
    "explorer_url": "https://basescan.org/tx/0xd4c19f2e8a91b06357cef3049821ea47dc33a09ef12c8456f8ab2d9e0c7e51a3",
    "type": "transfer",
    "date": "2026-04-18T14:19:41.208Z",
    "sender": "0x8F3aC91d2B741E59f064E9053a4d2E8F1c0b6D93a",
    "receiver": "0x42c9E1aF8d736B2D094e6590315Dc7a1F947c4B0e",
    "status": "successful",
    "fee": {
      "amount": 0.01,
      "assets": [
        {
          "id": "base:usdc",
          "amount": 0.01
        }
      ]
    },
    "input": {
      "amount": 10,
      "assets": [
        {
          "id": "base:usdc",
          "amount": 10
        }
      ]
    },
    "output": {
      "amount": 10,
      "assets": [
        {
          "id": "arbitrum:usdc",
          "amount": 10
        }
      ]
    }
  }
}