eth_call - HyperEVM

Example code for the eth_call JSON RPC method. Сomplete guide on how to use eth_call GetBlock JSON RPC in GetBlock Web3 documentation.

This method executes a new message call immediately without creating a transaction on the blockchain.

Parameters

Parameter	Type	Required	Description
transaction	object	Yes	Transaction call object.
block	string	Yes	Block parameter (only "latest" supported).

Transaction Object

Field	Type	Required	Description
from	string	No	Sender address.
to	string	Yes	Contract address to call.
gas	string	No	Gas limit (hex).
gasPrice	string	No	Gas price (hex).
value	string	No	Value to send (hex).
data	string	No	Encoded function call data.

Request

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_call",
    "params": [{
        "to": "0xContractAddress",
        "data": "0x70a08231000000000000000000000000AddressHere"
    }, "latest"],
    "id": "getblock.io"
}'

Axios

Request

Rust

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x0000000000000000000000000000000000000000000000000de0b6b3a7640000"
}

Response Parameters

Field	Type	Description
result	string	Return data from the contract call (hex).

Use Case

The eth_call method is essential for:

• Reading smart contract state

• Token balance queries (ERC-20 balanceOf)

• Price feed lookups

• Simulating transactions before sending

• DeFi protocol integrations

Error Handling

Error Code	Message	Cause
-32602	Invalid params	Invalid transaction object.
-32603	Internal error	Contract execution error.
3	Execution reverted	Contract reverted the call.

Web3 Integration

Ether.js

import { ethers } from "ethers";
const RPC_URL = "https://go.getblock.io/<ACCESS_TOKEN>";
const provider = new ethers.JsonRpcProvider(RPC_URL);

async function Call() {
  try {
    // Call the method — this will resolve to a number (promise resolves to number)
    const result = await provider.send("eth_call",
 [{
   "to": "0xContractAddress",
   "data": "0x70a08231000000000000000000000000AddressHere"
 ,
  }]);
    console.log("The result:", result);
    return result;
  } catch (error) {
    console.error("The error:", error);
    throw error;
  }
}

Viem