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Blockchain fees

Get the recommended fee/gas price for a blockchain

1 credit per API call

Get the recommended fee/gas price for a blockchain.

This API is supported for the following blockchains:

  • Bitcoin
  • Dogecoin
  • Ethereum
  • Litecoin
SecurityX-API-Key
Request
path Parameters
chain
required
string

Chain

Enum: "ETH" "BTC" "LTC" "DOGE"
Example: BTC
Responses
200

OK

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

403

Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.

500

Internal server error. There was an error on the server while processing the request.

get/v3/blockchain/fee/{chain}
Request samples 
Response samples 
application/json
{
  • "fast": 14766927339,
  • "medium": 13333333333,
  • "slow": 12953333333,
  • "baseFee": 12657357496,
  • "time": "2022-12-08T08:42:04.518Z",
  • "block": 16138867
}
Estimate the fee for a transaction on a blockchain
10 credits per API call


Estimate the current fee for different types of transactions.


This API is supported for the following blockchains:


    

  • Bitcoin
    • 

  • BNB Smart Chain
    • 

  • Celo
    • 

  • Dogecoin
    • 

  • Ethereum
    • 

  • Harmony
    • 

  • Klaytn
    • 

  • Litecoin
    • 

  • Polygon
    • 

  • XinFin
    • 



SecurityX-API-Key 
Request 
Request Body schema: application/json
One of:
chain
required
string
The blockchain to estimate the fee for


 Enum: "CELO" "ETH" "BSC" "XDC" "ONE" "MATIC" "KLAY"  
type
required
string
The type of the transaction


 Enum: "DEPLOY_ERC20" "DEPLOY_NFT" "MINT_NFT" "BURN_NFT" "TRANSFER_NFT" "TRANSFER_ERC20" "DEPLOY_AUCTION" "DEPLOY_MARKETPLACE"  
sender
string  = 42 characters 
(Only if type=TRANSFER_ERC20) The blockchain address of the sender address


 
recipient
string  = 42 characters 
(Only if type=TRANSFER_ERC20) The blockchain address of the recipient address


 
contractAddress
string  = 42 characters 
(Only if type=TRANSFER_ERC20) The blockchain address of the smart address of the fungible token


 
amount
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
(Only if type=TRANSFER_ERC20) The amount of the fungible token to be sent


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to perform the required operation due to a logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/blockchain/estimate
Request samples 
application/json
{
  • "chain": "CELO",
  • "type": "DEPLOY_ERC20"
}
Response samples 
application/json
{
  • "fast": "0.006584",
  • "medium": "0.004584",
  • "slow": "0.002584"
}
Estimate the fee for a BNB Smart Chain transaction
2 credits per API call


Get an estimated gas price and the number of gas units needed for a BNB Smart Chain transaction. The gas price is obtained from https://explorer.bitquery.io/bsc/gas.


NOTE: The estimated gas price is returned in wei. However, when making the transaction itself and providing the custom fee, you have to provide the gas price in Gwei. Make sure to convert the estimated gas price from wei to Gwei before submitting your transaction.


SecurityX-API-Key 
Request 
Request Body schema: application/json
from
required
string  = 42 characters 
Sender address.


 
to
required
string  = 42 characters 
Blockchain address to send assets


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent in BSC.


 
data
string  <= 50000 characters ^(0x|0h)?[0-9A-F]+$
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/bsc/gas
Request samples 
application/json
{
  • "from": "0xfb99f8ae9b70a0c8cd96ae665bbaf85a7e01a2ef",
  • "to": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "amount": "100000"
}
Response samples 
application/json
{
  • "gasPrice": "10000000000",
  • "gasLimit": "21000"
}
Estimate the fee for a Celo transaction
2 credits per API call


Get an estimated gas price and the number of gas units needed for a Celo transaction. The gas price is obtained from https://explorer.bitquery.io/celo_rc1/gas.


NOTE: The estimated gas price is returned in wei. However, when making the transaction itself and providing the custom fee, you have to provide the gas price in Gwei. Make sure to convert the estimated gas price from wei to Gwei before submitting your transaction.


SecurityX-API-Key 
Request 
Request Body schema: application/json
from
required
string  = 42 characters 
Sender address.


 
to
required
string  = 42 characters 
Blockchain address to send assets


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent.


 
data
string  <= 50000 characters ^(0x|0h)?[0-9A-F]+$
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/celo/gas
Request samples 
application/json
{
  • "from": "0xfb99f8ae9b70a0c8cd96ae665bbaf85a7e01a2ef",
  • "to": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "amount": "100000"
}
Response samples 
application/json
{
  • "gasPrice": "10000000000",
  • "gasLimit": "21000"
}
Estimate the fee for an Elrond transaction
2 credits per API call


Get an estimated gas price and the number of gas units needed for an Elrond transaction. The gas price is obtained from https://gateway.elrond.com/network/config. The gas limit is obtains from https://gateway.elrond.com/transaction/cost.


SecurityX-API-Key 
Request 
Request Body schema: application/json
sender
required
string  = 62 characters 
Account address of the sender


 
receiver
required
string  = 62 characters 
Account address of the receiver or smart contract


 
value
required
string
Value to be sent.


 
data
string
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/egld/gas
Request samples 
application/json
{
  • "sender": "erd17k95m339aqzxzyvjjjfa3lka0yyeqgcsda50tw5z9g73ycfe2caq9e6jq7",
  • "receiver": "erd17k95m339aqzxzyvjjjfa3lka0yyeqgcsda50tw5z9g73ycfe2caq9e6jq6",
  • "value": "0.1"
}
Response samples 
application/json
{
  • "gasPrice": 1000000000,
  • "gasLimit": 77000
}
Estimate the fee for an Ethereum transaction
10 credits per API call


Get an estimated gas price and the number of gas units needed for an Ethereum transaction. The gas price is obtained from multiple sources and calculated based on the latest N blocks and the current mempool state.


The fast gas price is used by default.


NOTE: The estimated gas price is returned in wei. However, when making the transaction itself and providing the custom fee, you have to provide the gas price in Gwei. Make sure to convert the estimated gas price from wei to Gwei before submitting your transaction.


SecurityX-API-Key 
Request 
header Parameters
x-testnet-type
string
 Default:  ethereum-sepolia
Type of Ethereum testnet. Defaults to ethereum-sepolia.


 Value: "ethereum-sepolia"  
Request Body schema: application/json
from
required
string  = 42 characters 
Sender address.


 
to
required
string  = 42 characters 
Blockchain address to send assets


 
contractAddress
string  = 42 characters 
Contract address of ERC20 token, if transaction is ERC20 token


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent in Ether or ERC20.


 
data
string  <= 50000 characters ^(0x|0h)?[0-9A-F]+$
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/ethereum/gas
Request samples 
application/json
{
  • "from": "0xfb99f8ae9b70a0c8cd96ae665bbaf85a7e01a2ef",
  • "to": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "amount": "100000"
}
Response samples 
application/json
{
  • "gasLimit": "40000",
  • "gasPrice": "20000000000",
  • "estimations": {
    }
}
Estimate the fee for multiple Ethereum transactions
10 credits per API call + 10 credits per each gas estimation


Get an estimated gas price and the number of gas units needed for multiple Ethereum transactions. The gas price is obtained from multiple sources and calculated based on the latest N blocks and the current mempool state.


The estimations are returned in the same order as the transactions were submitted in the request.


The fast gas price is used by default.


NOTE: The estimated gas price is returned in wei. However, when making a transaction itself and providing the custom fee, you have to provide the gas price in Gwei. Make sure to convert the estimated gas price from wei to Gwei before submitting your transaction.




SecurityX-API-Key 
Request 
header Parameters
x-testnet-type
string
 Default:  ethereum-sepolia
Type of Ethereum testnet. Defaults to ethereum-sepolia.


 Value: "ethereum-sepolia"  
Request Body schema: application/json
required
Array of objects (EthEstimateGas) 
 
 Array 
from
required
string  = 42 characters 
Sender address.


 
to
required
string  = 42 characters 
Blockchain address to send assets


 
contractAddress
string  = 42 characters 
Contract address of ERC20 token, if transaction is ERC20 token


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent in Ether or ERC20.


 
data
string  <= 50000 characters ^(0x|0h)?[0-9A-F]+$
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/ethereum/gas/batch
Request samples 
application/json
{
  • "estimations": [
    ]
}
Response samples 
application/json
{
  • "error": true,
  • "result": [
    ]
}
Estimate Harmony transaction fees
2 credits per API call


Get an estimated gas price and the number of gas units needed for a Harmony transaction.


NOTE: The estimated gas price is returned in wei. However, when making the transaction itself, you have to provide the gas price in Gwei. Make sure to convert the estimated gas price from wei to Gwei before submitting your transaction.


SecurityX-API-Key 
Request 
Request Body schema: application/json
from
required
string  = 66 characters 
Sender address.


 
to
required
string  = 42 characters 
Blockchain address to send assets


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent in One.


 
data
string  <= 50000 characters 
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/one/gas
Request samples 
application/json
{
  • "from": "0xfb99f8ae9b70a0c8cd96ae665bbaf85a7e01a2ef",
  • "to": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "amount": "100000"
}
Response samples 
application/json
{
  • "gasLimit": "21000",
  • "gasPrice": "10000000000"
}
Estimate the fee for a Klaytn transaction
2 credits per API call


Get an estimated gas price and the number of gas units needed for a Klaytn transaction. The gas price is obtained from https://explorer.bitquery.io/klaytn/gas.


NOTE: The estimated gas price is returned in peb. However, when making the transaction itself and providing the custom fee, you have to provide the gas price in Gpeb. Make sure to convert the estimated gas price from peb to Gpeb before submitting your transaction.


SecurityX-API-Key 
Request 
Request Body schema: application/json
from
required
string  = 42 characters 
Sender address.


 
to
required
string  = 42 characters 
Blockchain address to send assets


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent in KLAY.


 
data
string  <= 50000 characters ^(0x|0h)?[0-9A-F]+$
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/klaytn/gas
Request samples 
application/json
{
  • "from": "0xfb99f8ae9b70a0c8cd96ae665bbaf85a7e01a2ef",
  • "to": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "amount": "100000"
}
Response samples 
application/json
{
  • "gasPrice": "20",
  • "gasLimit": "40000"
}
Estimate the fee for a KuCoin Community Chain transaction
2 credits per API call


Get an estimated gas price and the number of gas units needed for a KuCoin Community Chain transaction.


NOTE: The estimated gas price is returned in wei. However, when making the transaction itself and providing the custom fee, you have to provide the gas price in Gwei. Make sure to convert the estimated gas price from wei to Gwei before submitting your transaction.


SecurityX-API-Key 
Request 
Request Body schema: application/json
from
required
string  = 42 characters 
Sender address.


 
to
required
string  = 42 characters 
Blockchain address to send assets


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent in KCS.


 
data
string  <= 50000 characters ^(0x|0h)?[0-9A-F]+$
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/kcs/gas
Request samples 
application/json
{
  • "from": "0xfb99f8ae9b70a0c8cd96ae665bbaf85a7e01a2ef",
  • "to": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "amount": "100000"
}
Response samples 
application/json
{
  • "gasPrice": "10000000000",
  • "gasLimit": "21000"
}
Estimate the fee for a Polygon transaction
2 credits per API call


Get an estimated gas price and the number of gas units needed for a Polygon transaction. The gas price is obtained from https://gasstation-mainnet.matic.network/.


NOTE: The estimated gas price is returned in wei. However, when making the transaction itself and providing the custom fee, you have to provide the gas price in Gwei. Make sure to convert the estimated gas price from wei to Gwei before submitting your transaction.


SecurityX-API-Key 
Request 
Request Body schema: application/json
from
required
string  = 42 characters 
Sender address.


 
to
required
string  = 42 characters 
Blockchain address to send assets


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent in MATIC.


 
data
string  <= 50000 characters ^(0x|0h)?[0-9A-F]+$
Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/polygon/gas
Request samples 
application/json
{
  • "from": "0xfb99f8ae9b70a0c8cd96ae665bbaf85a7e01a2ef",
  • "to": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "amount": "100000"
}
Response samples 
application/json
{
  • "gasPrice": "10000000000",
  • "gasLimit": "21000"
}
Estimate the fee for a XinFin transaction
2 credits per API call


Get an estimated gas price and the number of gas units needed for a XinFin transaction. The gas price is obtained from https://rpc.xinfin.network/gasPrice.


NOTE: The estimated gas price is returned in wei. However, when making the transaction itself and providing the custom fee, you have to provide the gas price in Gwei. Make sure to convert the estimated gas price from wei to Gwei before submitting your transaction.


SecurityX-API-Key 
Request 
Request Body schema: application/json
from
required
string  [ 42 .. 43 ] characters 
Sender address.


 
to
required
string  [ 42 .. 43 ] characters 
Blockchain address to send assets


 
amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$
Amount to be sent in XDC.


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/xdc/gas
Request samples 
application/json
{
  • "from": "xdcfb99f8ae9b70a0c8cd96ae665bbaf85a7e01a2ef",
  • "to": "xdc687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "amount": "100000"
}
Response samples 
application/json
{
  • "gasPrice": "10000000000",
  • "gasLimit": "21000"
}
Estimate the gas needed for a VeChain transaction
5 credits per API call


Get an estimated amount of gas needed for a VeChain transaction.


SecurityX-API-Key 
Request 
Request Body schema: application/json
from
required
string  <= 50 characters 
Sender account address.


 
to
required
string  <= 50 characters 
Recipient account address.


 
value
required
string  <= 50 characters 
Amount to send.


 
data
string  <= 10000 characters 
Data to send to Smart Contract


 
nonce
number
Nonce


 
Responses 
200
OK


400
Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.


401
Unauthorized. Not valid or inactive subscription key present in the HTTP Header.


403
Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.


500
Internal server error. There was an error on the server while processing the request.


post/v3/vet/transaction/gas
Request samples 
application/json
{
  • "from": "0x5034aa590125b64023a0262112b98d72e3c8e40e",
  • "to": "0x5034aa590125b64023a0262112b98d72e3c8e40e",
  • "value": "140"
}
Response samples 
application/json
21000
➔ Next to Virtual account blockchain fees