eth_getStorageAt | Optimism

Optimism API method eth_getStorageAt retrieves the value from a specific storage position of a contract at a given address. This method is useful for inspecting the state of smart contracts at specific points in their execution or at a particular block.

This example makes a call to slot 7 of the USDC contract on the Optimism Mainnet.


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  • address — the address of the contract to access.
  • position — the storage position to inspect, given as a hexadecimal value.
  • block — the block number (in hexadecimal) or one of the strings "earliest", "latest", or "pending", indicating the state to consider. The default is "latest".


  • result — the value from the specified storage position at the given address, returned as a hexadecimal string.

Use case

The eth_getStorageAt method is essential for:

  • Developers and auditors who need to verify the state and behavior of smart contracts by inspecting their storage.
  • DApps that require access to contract state that is not exposed through contract methods.
  • Tools and services that monitor contract state for changes, updates, or anomalies.

Try the eth_getStorageAt RPC method yourself

Click Try It! to start a request and see the response here!