POST
/
efb0a5eccd2caa5135eb54eba6f7f300
curl --request POST \
  --url https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300 \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "method": "eth_getCode",
  "id": 1,
  "params": [
    "0x350a791Bfc2C21F9Ed5d10980Dad2e2638ffa7f6",
    "latest"
  ]
}'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}

Optimism API method eth_getCode retrieves the code stored at a specific address. This method is typically used to inspect the bytecode of smart contracts on the Optimism blockchain.

This example retrieves the bytecode of the Chainlink token on the Optimism Mainnet.

Get you own node endpoint today

Start for free and get your app to production levels immediately. No credit card required.

You can sign up with your GitHub, X, Google, or Microsoft account.

​
Parameters

  • address — the address to get the code from.
  • block — the block number (in hexadecimal) or one of the strings "earliest", "latest", or "pending", indicating the state to consider. The default is "latest".

​
Response

  • result — the code from the specified address, returned as a hexadecimal string.

​
Use case

The eth_getCode method is essential for:

  • Developers and auditors who need to verify the deployed bytecode of smart contracts.
  • DApps that interact with contracts dynamically based on their code.
  • Tools and services that monitor and analyze contract deployments and updates.

Body

application/json
​
jsonrpc
string
default:2.0
required
​
method
string
default:eth_getCode
required
​
id
integer
default:1
required
​
params
string[]
required

Response

200 - application/json
The code from the specified address
​
jsonrpc
string
​
id
integer
​
result
string