Child Address Network Fee

curl --request POST \
  --url https://api.blockradar.co/wallets/{walletId}/addresses/{addressId}/contracts/network-fee \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "calls": [
    {
      "abi": [
        {
          "constant": false,
          "inputs": [
            {
              "name": "_to",
              "type": "address"
            },
            {
              "name": "_value",
              "type": "uint256"
            }
          ],
          "name": "transfer",
          "outputs": [],
          "payable": false,
          "stateMutability": "nonpayable",
          "type": "function"
        }
      ],
      "address": "0x337610d27c682E347C9cD60BD4b3b107C9d34dDd",
      "method": "transfer",
      "parameters": [
        "0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22",
        "10000"
      ]
    },
    {
      "abi": [
        {
          "constant": false,
          "inputs": [
            {
              "name": "_to",
              "type": "address"
            },
            {
              "name": "_value",
              "type": "uint256"
            }
          ],
          "name": "transfer",
          "outputs": [],
          "payable": false,
          "stateMutability": "nonpayable",
          "type": "function"
        }
      ],
      "address": "0x337610d27c682E347C9cD60BD4b3b107C9d34dDd",
      "method": "transfer",
      "parameters": [
        "0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22",
        "10000"
      ]
    }
  ]
}
'

{
  "data": {
    "balance": "1.012299726305777896",
    "fee": "0.00422709309982132"
  },
  "message": "Network fee retrieved successfully",
  "statusCode": 200
}

Child Address Network Fee

This API provides endpoints for interacting with smart contracts on the blockchain. It allows estimating network fees.

Request Body

The request body should be in raw format and include the following parameters:

Parameter	Type	Required	Description
address	string	Yes	The address of the contract.
method	string	Yes	The method to be called on the contract.
parameters	array	Yes	An array of parameters to pass to the method.
abi	array	Yes	An array containing the ABI of the contract or method.

POST

wallets

{walletId}

addresses

{addressId}

contracts

network-fee

Child Address Network Fee

curl --request POST \
  --url https://api.blockradar.co/wallets/{walletId}/addresses/{addressId}/contracts/network-fee \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "calls": [
    {
      "abi": [
        {
          "constant": false,
          "inputs": [
            {
              "name": "_to",
              "type": "address"
            },
            {
              "name": "_value",
              "type": "uint256"
            }
          ],
          "name": "transfer",
          "outputs": [],
          "payable": false,
          "stateMutability": "nonpayable",
          "type": "function"
        }
      ],
      "address": "0x337610d27c682E347C9cD60BD4b3b107C9d34dDd",
      "method": "transfer",
      "parameters": [
        "0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22",
        "10000"
      ]
    },
    {
      "abi": [
        {
          "constant": false,
          "inputs": [
            {
              "name": "_to",
              "type": "address"
            },
            {
              "name": "_value",
              "type": "uint256"
            }
          ],
          "name": "transfer",
          "outputs": [],
          "payable": false,
          "stateMutability": "nonpayable",
          "type": "function"
        }
      ],
      "address": "0x337610d27c682E347C9cD60BD4b3b107C9d34dDd",
      "method": "transfer",
      "parameters": [
        "0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22",
        "10000"
      ]
    }
  ]
}
'

{
  "data": {
    "balance": "1.012299726305777896",
    "fee": "0.00422709309982132"
  },
  "message": "Network fee retrieved successfully",
  "statusCode": 200
}

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.

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": [...]
    }
  ]
}

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": []
  }
}

Response Fields

Field	Description
fees	Array of individual fee estimates
totalFee	Sum of all network fees
estimatedArrivalTime	Total time (sum of individual times, 30s each)
errors	Array of any failed estimations

Validation Rules

Rule	Value
Max batch size	20 operations
Min batch size	1 operation

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

Authorizations

x-api-key

string

header

required

Path Parameters

walletId

string

required

Example:

"YOUR_WALLET_ID"

addressId

string

required

Example:

"ADDRESS_ID"

Body

application/json

calls

object[]

Show child attributes

Example:

[
  {
    "abi": [
      {
        "constant": false,
        "inputs": [
          { "name": "_to", "type": "address" },
          { "name": "_value", "type": "uint256" }
        ],
        "name": "transfer",
        "outputs": [],
        "payable": false,
        "stateMutability": "nonpayable",
        "type": "function"
      }
    ],
    "address": "0x337610d27c682E347C9cD60BD4b3b107C9d34dDd",
    "method": "transfer",
    "parameters": [
      "0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22",
      "10000"
    ]
  },
  {
    "abi": [
      {
        "constant": false,
        "inputs": [
          { "name": "_to", "type": "address" },
          { "name": "_value", "type": "uint256" }
        ],
        "name": "transfer",
        "outputs": [],
        "payable": false,
        "stateMutability": "nonpayable",
        "type": "function"
      }
    ],
    "address": "0x337610d27c682E347C9cD60BD4b3b107C9d34dDd",
    "method": "transfer",
    "parameters": [
      "0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22",
      "10000"
    ]
  }
]

Response

200 - application/json

Ethereum / Tron / Ethereum (Batch) / Tron (Batch)

data

object

Show child attributes

message

string

Example:

"Network fee retrieved successfully"

statusCode

number

Example:

200

Documentation Index

​Batch Operations

​Batch Request Format

​Batch Response Format

​Response Fields

​Validation Rules

​Use Cases

Authorizations

Path Parameters

Body

Response

Batch Operations

Batch Request Format

Batch Response Format

Response Fields

Validation Rules

Use Cases