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linea_estimateGas

Generates and returns the estimated amount of gas required to allow the transaction to complete and be published on Ethereum. The method does not submit the transaction to the blockchain.

The priorityFeePerGas returned by this method includes the cost of submitting the transaction to Ethereum, which can vary based on the size of the calldata.

info

For more information about estimating gas, and how this API formulates the transaction costs, see the Linea gas fees documentation.

note

linea_estimateGas uses the same inputs as the standard eth_estimateGas, but returns the recommended gas limit, the base fee per gas, and the priority fee per gas. We recommend using linea_estimateGas for more accurate results.

Parameters​

  • TRANSACTION CALL OBJECT [required]
    • from: [optional] 20 bytes - The address the transaction is sent from.
    • to: [optional] 20 bytes - The address the transaction is directed to.
    • gas: [optional] Hexadecimal value of the gas provided for the transaction execution. linea_estimateGas consumes zero gas, but this parameter may be needed by some executions.
    • gasPrice: [optional] Hexadecimal value of the gas price used for each paid gas.
    • maxPriorityFeePerGas: [optional] Maximum fee, in wei, the sender is willing to pay per gas above the base fee.
    • maxFeePerGas: [optional] Maximum total fee (base fee + priority fee), in wei, the sender is willing to pay per gas.
    • value: [optional] Hexadecimal value of the value sent with this transaction.
    • data: [optional] Hash of the method signature and encoded parameters. See the Ethereum contract ABI specification.
  • blockParameter: (string) [optional] A hexadecimal block number, or one of the tags latest, earliest, pending or finalized. See the default block parameter.
    warning

    safe isn't supported, use finalized. Learn more about Linea's layer 2 finalization.

Returns​

Hexadecimal values representing the recommended gas limit, the base fee per gas, and the priority fee per gas.

Example​

Replace <YOUR-API-KEY> with an API key from your Infura dashboard.

Request​

curl https://linea-mainnet.infura.io/v3/<YOUR-API-KEY> \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"linea_estimateGas","params":[{"from":"0x42c27251C710864Cf76f1b9918Ace3E585e6E21b","value":"0x1","gasPrice":"0x100000000","gas":"0x21000"}],"id":53}'

Response​

{
  "jsonrpc": "2.0",
  "id": 53,
  "result": {
    "baseFeePerGas": "0x7",
    "gasLimit": "0xcf08",
    "priorityFeePerGas": "0x43a82a4"
  }
}