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POST
eth_getCode
curl --request POST \
  --url https://tempo-moderato.core.chainstack.com/a25a421add2280d53fdbc23417055501/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_getCode",
  "params": [
    "0x20c0000000000000000000000000000000000000",
    "latest"
  ],
  "id": 1
}
'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}
Tempo API method that returns the bytecode at a given address. This is commonly used to verify if an address is a contract.
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​
Parameters

  • address — the address to get the code from
  • blockParameter — the block number (hex) or tag (latest, earliest, pending)

​
Response

  • result — the bytecode at the given address, or 0x if no code exists (EOA)

​
eth_getCode code examples

const Web3 = require("web3");
const NODE_URL = "CHAINSTACK_NODE_URL";
const web3 = new Web3(NODE_URL);

// Check if pathUSD is a contract
const PATHUSD = "0x20c0000000000000000000000000000000000000";

async function getCode() {
  const code = await web3.eth.getCode(PATHUSD);
  console.log(`Is contract: ${code !== '0x'}`);
}

getCode()

Body

application/json
​
jsonrpc
string
default:2.0
​
method
string
default:eth_getCode
​
params
any[]

Contract address and block parameter

​
id
integer
default:1

Response

200 - application/json

The contract bytecode

​
jsonrpc
string
​
id
integer
​
result
string

The bytecode at the given address, or 0x if no code exists

Last modified on January 23, 2026