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POST
eth_call
curl --request POST \
  --url https://tempo-moderato.core.chainstack.com/a25a421add2280d53fdbc23417055501/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_call",
  "params": [
    {
      "to": "0x20c0000000000000000000000000000000000000",
      "data": "0x70a082310000000000000000000000009729187d9e8bbefa8295f39f5634ca454dd9d294"
    },
    "latest"
  ],
  "id": 1
}
'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}
Tempo API method that executes a new message call immediately without creating a transaction on the blockchain. This is commonly used to read data from smart contracts, such as TIP-20 token balances.
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​
Parameters

  • callObject — the call object:
    • from — (optional) address the call is sent from
    • to — the address the call is directed to
    • gas — (optional) gas provided for the call
    • gasPrice — (optional) gas price for the call
    • value — (optional) value sent with the call
    • data — (optional) hash of the method signature and encoded parameters
  • blockParameter — the block number (hex) or tag (latest, earliest, pending)

​
Response

  • result — the return value of the executed contract call

​
eth_call code examples

The following example queries the balanceOf function on the pathUSD TIP-20 token contract: 
const ethers = require('ethers');
const NODE_URL = "CHAINSTACK_NODE_URL";
const provider = new ethers.JsonRpcProvider(NODE_URL);

// pathUSD token address
const PATHUSD = "0x20c0000000000000000000000000000000000000";

const getBalance = async (address) => {
    const abi = ["function balanceOf(address) view returns (uint256)"];
    const token = new ethers.Contract(PATHUSD, abi, provider);
    const balance = await token.balanceOf(address);
    // TIP-20 tokens use 6 decimals
    console.log(`pathUSD balance: ${ethers.formatUnits(balance, 6)}`);
  };

getBalance("0x9729187D9E8Bbefa8295F39f5634cA454dd9d294");

Body

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

Transaction call object and block parameter

​
id
integer
default:1

Response

200 - application/json

The return value of the executed contract call

​
jsonrpc
string
​
id
integer
​
result
string

The return data of the call

Last modified on January 23, 2026