eth_estimateGas

POST https://mainnet.valuechain.xyz

Estimates the gas required to execute a transaction.

An estimate reflects current state. The later transaction can still fail. See Gas & Fees.

Parameters

Name	Type	Required	Description
transaction	object	Yes	Same from, to, value, and data that will be submitted.
block	quantity or tag	No	Hex block number, or earliest, latest, safe, finalized, or pending. See block tags.

Result

Gas (quantity): Hex-encoded gas units, not an amount of SOSO.

Example

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x5208"
}

Code examples

cURL

curl --request POST \
  --url https://mainnet.valuechain.xyz \
  --header 'Content-Type: application/json' \
  --data '{"jsonrpc": "2.0", "id": 1, "method": "eth_estimateGas", "params": [{"from": "0x7779ef1c26a0437f9fbd06e21f238da8b8336cf2", "to": "0x7779ef1c26a0437f9fbd06e21f238da8b8336cf2", "value": "0x0"}]}'

JavaScript

const options = {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({"jsonrpc": "2.0", "id": 1, "method": "eth_estimateGas", "params": [{"from": "0x7779ef1c26a0437f9fbd06e21f238da8b8336cf2", "to": "0x7779ef1c26a0437f9fbd06e21f238da8b8336cf2", "value": "0x0"}]})
};

fetch('https://mainnet.valuechain.xyz', options)
  .then((res) => res.json())
  .then((res) => console.log(res))
  .catch((err) => console.error(err));

Python

import requests

url = "https://mainnet.valuechain.xyz"
payload = {
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_estimateGas",
  "params": [
    {
      "from": "0x7779ef1c26a0437f9fbd06e21f238da8b8336cf2",
      "to": "0x7779ef1c26a0437f9fbd06e21f238da8b8336cf2",
      "value": "0x0"
    }
  ]
}
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)