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Batch Operations

This endpoint supports batch operations, allowing you to estimate network fees for multiple contract operations from a specific child address in a single API call.

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Batch Request Format

To estimate fees for multiple operations, use the calls array: 
{
  "calls": [
    {
      "address": "0xTokenContract...",
      "method": "approve",
      "parameters": ["0xSpender...", "1000000000000000000"],
      "abi": [...]
    },
    {
      "address": "0xProtocolContract...",
      "method": "deposit",
      "parameters": ["1000000000000000000"],
      "abi": [...]
    }
  ]
}

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Batch Response Format

Returns individual fees plus totals: 
{
  "message": "Batch network fee retrieved (2/2 successful)",
  "statusCode": 200,
  "data": {
    "fees": [
      {
        "index": 0,
        "method": "approve",
        "fee": "0.00001247904",
        "networkFee": "0.00001247904",
        "networkFeeInUSD": "0.01",
        "nativeBalance": "0.5",
        "nativeBalanceInUSD": "450.00",
        "estimatedArrivalTime": 30,
        "transactionFee": "0"
      },
      {
        "index": 1,
        "method": "deposit",
        "fee": "0.00000504",
        "networkFee": "0.00000504",
        "networkFeeInUSD": "0.005",
        "nativeBalance": "0.5",
        "nativeBalanceInUSD": "450.00",
        "estimatedArrivalTime": 30,
        "transactionFee": "0"
      }
    ],
    "totalFee": "0.00001751904",
    "estimatedArrivalTime": 60,
    "errors": []
  }
}

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Response Fields

FieldDescription
feesArray of individual fee estimates
totalFeeSum of all network fees
estimatedArrivalTimeTotal time (sum of individual times, 30s each)
errorsArray of any failed estimations

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Validation Rules

RuleValue
Max batch size20 operations
Min batch size1 operation

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Use Cases

  • Fee estimation: Calculate total cost before executing batch operations
  • Gas optimization: Compare fees across different operation orderings
  • Budget planning: Estimate costs for multi-step DeFi transactions