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Get fees for a specific transaction

The cost of a specific transaction on the blockchain is dependent on complexity of that transaction. The complexity of a transaction is expressed in the amount of "gas" that is required to execute this transaction. A more complex transaction, requires a higher gas-amount.
This means that the fee that needs to be paid for a specific transaction is the following:
fee-for-a-transaction = amount-of-gas-needed * gas-price-at-that-moment
To retrieve the gas needed to execute a certain blockchain transaction, the build transaction endpoint can be used.
This endpoint adds all the necessary details to a generic transaction request, like the necessary GAS fees, etc.

Example

Request

POST https://api-wallet.venly.io/api/transactions/build
{
"type": "TRANSFER",
"secretType": "MATIC",
"walletId": "2b358962-4467-4f41-ab93-2b6395d8ae16",
"to": "0x2Eaf85AF290759770CF98BF83aa640DC2A63daDf",
"value": 10
}

Response

{
"success": true,
"result": {
"walletId": "2b358962-4467-4f41-ab93-2b6395d8ae16",
"gasPrice": 20000000000,
"gas": 21000,
"value": 10000000000000000000,
"to": "0x2Eaf85AF290759770CF98BF83aa640DC2A63daDf",
"type": "MATIC_TRANSACTION"
}
}
Note that:
  • gas represents the maximum amount of gas you allow to be spent on this transaction
  • gasPrice is the price for one unit of gas

​

Transaction Request

The following transaction types can be used when building a transaction:

TRANSFER

{
"type": "TRANSFER",
"secretType": "MATIC",
"walletId": "2b358962-4467-4f41-ab93-2b6395d8ae16",
"to": "0x2Eaf85AF290759770CF98BF83aa640DC2A63daDf",
"value": 10
}

GAS_TRANSFER

{
"type": "GAS_TRANSFER",
"secretType": "MATIC",
"walletId": "2b358962-4467-4f41-ab93-2b6395d8ae16",
"to": "0x2Eaf85AF290759770CF98BF83aa640DC2A63daDf",
"value": 10
}

TOKEN_TRANSFER

{
"type": "TOKEN_TRANSFER",
"secretType": "ETHEREUM",
"tokenAddress": "0x07865c6e87b9f70255377e024ace6630c1eaa37f",
"walletId": "2b358962-4467-4f41-ab93-2b6395d8ae16",
"to": "0x2Eaf85AF290759770CF98BF83aa640DC2A63daDf",
"value": 1
}

NFT_TRANSFER

{
"type": "NFT_TRANSFER",
"secretType": "ETHEREUM",
"tokenAddress": "0x77f57f9ac6c52ce5aa9d19a57d0aee82be7e73f9",
"walletId": "2b358962-4467-4f41-ab93-2b6395d8ae16",
"to": "0x2Eaf85AF290759770CF98BF83aa640DC2A63daDf",
"tokenId": 1
}

CONTRACT_EXECUTION

{
"type": "CONTRACT_EXECUTION",
"walletId": "2b358962-4467-4f41-ab93-2b6395d8ae16",
"to": "0xdc71b72db51e227e65a45004ab2798d31e8934c9",
"secretType": "ETHEREUM",
"functionName": "transfer",
"value": 1,
"inputs": [{
"type": "address",
"value": "0x80cbb6c4342948e5be81987dce8251dbedd69138"
}, {
"type": "uint256",
"value": 73680000
}]
}
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Last modified 3mo ago