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Last updated on January 1, 1970

2 min read

Method eth_estimateGas (FUSE)
connect with WS protocol



Generates and returns an estimate of how much gas is necessary to allowthe transaction to complete. The transaction will not be added to theblockchain. Note that the estimate may be significantly more than theamount of gas actually used by the transaction, for a variety of reasonsincluding EVM mechanics and node performance.


object - json object

The transacion call object in format: { "from": "address" (optional, string) - The address the transaction is sent from. "to": "address" (optional, string) - The address the transaction is directed to. "gas": "quantity" (optional, string) - Integer of the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions. "gasPrice": "quantity" (optional, string) - Integer of the gasPrice used for each paid gas "value": "quantity" (optional, string) - Integer of the value sent with this transaction "data": "data" (optional, string) - Hash of the method signature and encoded parameters. }



integer block number, or the string "latest", "earliest" or "pending".


wscat -c wss:// 
# wait for connection and send the request body 
{"jsonrpc": "2.0",
"method": "eth_estimateGas",
"params": [{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155", "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567", "gas": "0x76c0", "gasPrice": "0x9184e72a000", "value": "0x9184e72a", "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"],
"id": ""}


    "id": "",
    "jsonrpc": "2.0",
    "result": "0x5498"
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