curl --request GET \
  --url https://api.chainrails.io/api/v1/quotes/multi-source \
  --header 'Authorization: Bearer <token>'

{
  "destinationChain": "ARBITRUM_TESTNET",
  "quotes": [
    {
      "sourceChain": "BASE_TESTNET",
      "destinationChain": "ARBITRUM_TESTNET",
      "bestQuote": {
        "bridgeFeeDetails": {
          "maxFee": "8000"
        },
        "totalFee": "18000",
        "totalFeeFormatted": "0.018",
        "route": {
          "tokenIn": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "tokenOut": "0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4",
          "sourceChain": "BASE_TESTNET",
          "destinationChain": "ARBITRUM_TESTNET",
          "amount": "1500000",
          "bridge": "CCTP"
        }
      }
    }
  ],
  "cheapestOption": {
    "sourceChain": "ARBITRUM_TESTNET",
    "destinationChain": "ARBITRUM_TESTNET",
    "bestQuote": {
      "bridgeFeeDetails": {
        "maxFee": "0"
      },
      "totalFee": "10000",
      "totalFeeFormatted": "0.01",
      "route": {
        "tokenIn": "<string>",
        "tokenOut": "<string>",
        "sourceChain": "ARBITRUM_TESTNET",
        "destinationChain": "ARBITRUM_TESTNET",
        "amount": "1500000"
      }
    }
  }
}