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POST
eth_sendRawTransactionSync
curl --request POST \
  --url https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_sendRawTransactionSync",
  "params": [
    "0xf867808502540e841e825208949729187d9e8bbefa8295f39f5634ca454dd9d294808083014b9da00602a6c9850068ac6667c098f65cf061e5e90d7030a63d13396dc6d0522fe517a07a0f9c9455612fcacfce60fba7c6e305728148f3ec345661535d0230f872f224"
  ],
  "id": 1
}
'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": {}
}
Tempo-specific API method that sends a signed transaction to the network and blocks until the transaction receipt is returned. This is a synchronous version of eth_sendRawTransaction — instead of returning just the transaction hash, it waits for the transaction to be included in a block and returns the full receipt.
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This method is particularly useful on Tempo because of its ~500ms finality. The synchronous wait adds minimal latency while eliminating the need to poll for receipts.

​
Parameters

  • signedTransaction — the signed transaction data as a hex string

​
Response

  • result — the full transaction receipt object, returned once the transaction is included in a block. Contains the same fields as the response from eth_getTransactionReceipt, including Tempo-specific fields like feeToken and feePayer.

​
eth_sendRawTransactionSync code examples

const ethers = require('ethers');
const NODE_URL = "CHAINSTACK_NODE_URL";
const provider = new ethers.JsonRpcProvider(NODE_URL);

const sendTransactionSync = async () => {
    const wallet = new ethers.Wallet("YOUR_PRIVATE_KEY", provider);

    const tx = {
      to: "0xRecipientAddress",
      value: 0,
      data: "0x..." // TIP-20 transfer calldata
    };

    // Sign the transaction
    const signedTx = await wallet.signTransaction(tx);

    // Send synchronously — blocks until receipt is returned
    const receipt = await provider.send("eth_sendRawTransactionSync", [signedTx]);
    console.log(`Confirmed in block: ${receipt.blockNumber}`);
    console.log(`Status: ${receipt.status}`);
  };

sendTransactionSync();

​
When to use

Use eth_sendRawTransactionSync instead of eth_sendRawTransaction when:
  • You need the receipt immediately and want to avoid polling with eth_getTransactionReceipt
  • You are building synchronous request/response flows (like payment APIs)
  • You want to simplify transaction submission logic by getting the result in a single call
For fire-and-forget scenarios or when submitting many transactions in parallel, use eth_sendRawTransaction instead.

Body

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

Signed transaction data

​
id
integer
default:1

Response

200 - application/json

The transaction receipt

​
jsonrpc
string
​
id
integer
​
result
object

The transaction receipt object, returned once the transaction is included in a block

Last modified on March 19, 2026