eth_createAccessList | Optimism

Optimism API method eth_createAccessList generates an access list for a transaction based on specific default values. An access list includes addresses and storage keys the transaction intends to access, facilitating more efficient gas usage.

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Parameters

• transactionObject — an object containing transaction parameters with default values:
  • from — the address of the sender.
  • data — the data being sent with the transaction.
• blockParameter — specifies the blockchain state to use for generating the access list, with a default value of "pending".

Response

• result — an object containing:
  • accessList — the generated access list, detailing addresses and storage keys the transaction will access.
  • gasUsed — the estimated gas used to execute the transaction with the generated access list.

Use case

The eth_createAccessList method is crucial for:

• Preparing transactions that optimize gas usage by explicitly stating which addresses and storage keys will be accessed.
• Developers aiming to reduce transaction costs and improve efficiency on the Optimism network.
• Transactions that comply with EIP-2930, which introduces access lists as a transaction type to specify state access.

Try the eth_createAccessList RPC method yourself

This method provides a practical approach to optimizing transaction execution and gas usage on the Optimism blockchain by pre-determining the access list.