Eth_estimateGas

Estimate Gas for Transaction

post

Simulates a transaction and returns an estimate of how much gas would be used.

Authorizations

api-keyAuth

api-keystringRequired

Body

application/json

jsonrpcstringRequired

JSON-RPC protocol version

Example: 2.0

methodstringRequired

The method name

Example: eth_estimateGas

idintegerRequired

Request identifier

Example: 1

Responses

200

Estimated gas amount

application/json

jsonrpcstringOptional

JSON-RPC version

Example: 2.0

idintegerOptional

ID that matches the request

Example: 1

resultstringOptional

Estimated gas needed for the transaction, returned as a hexadecimal string. Example: "0x5208" equals 21000 in decimal.

Example: 0x5208

post

/

HTTPcURLJavaScriptPython

POST / HTTP/1.1
Host: eth-archive.nownodes.io
api-key: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 298

{
  "jsonrpc": "2.0",
  "method": "eth_estimateGas",
  "params": [
    {
      "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
      "to": "0x6b175474e89094c44da98b954eedeac495271d0f",
      "gas": "0x76c0",
      "gasPrice": "0x9184e72a000",
      "value": "0x0",
      "data": "0x70a08231000000000000000000000000a0df350d2637096571f7a701cbc1c5fd"
    }
  ],
  "id": 1
}

200

Estimated gas amount

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