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POST
/
2fc1de7f08c0465f6a28e3c355e0cb14
eth_sendRawTransactionSync
curl --request POST \
  --url https://base-mainnet.core.chainstack.com/2fc1de7f08c0465f6a28e3c355e0cb14 \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_sendRawTransactionSync",
  "params": [
    "0xf86c808504a817c80082520894ab5db0e98b8ea6b7f9d8ad8e8ed0bc8fba0d1a2f870de0b6b3a764000080821b9f",
    5000
  ],
  "id": 1
}
'
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "transactionHash": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
    "blockHash": "0xabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdefabcdef",
    "blockNumber": "0x12345",
    "gasUsed": "0x5208",
    "status": "0x1"
  }
}
Base API method eth_sendRawTransactionSync allows for the submission of a pre-signed transaction to the Base network and waits synchronously for the transaction receipt or a configurable timeout. This method reduces transaction submission latency by combining transaction submission and receipt retrieval into a single RPC call, based on EIP-7966.
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​
Parameters

  • signedTransactionData — the signed transaction data in hexadecimal format. This data includes the transaction details such as nonce, gas price, gas limit, to address, value, data, and the signature.
  • timeout (optional) — maximum wait time in milliseconds, passed as a number (not a string). If not provided, uses the node’s default timeout (typically 2 seconds). Must be a positive integer up to the node-configured maximum of 6000 ms. Values above the maximum are rejected with time out too long, timeout: <value> ms, max: 6000 ms.

​
Response

  • result — the complete transaction receipt object containing transaction hash, block information, gas usage, contract address (if applicable), logs, and status.

​
Use case

The eth_sendRawTransactionSync method is particularly useful for:
  • High-frequency applications requiring immediate transaction confirmation feedback.
  • Layer 2 solutions with fast block times where rapid transaction throughput is critical.
  • DApps and wallets seeking to improve user experience with faster transaction confirmations.
  • Trading applications where transaction latency directly impacts performance.
  • Applications requiring stronger delivery guarantees than standard asynchronous transaction submission.

Body

application/json
​
jsonrpc
string
default:2.0
required
​
method
string
default:eth_sendRawTransactionSync
required
​
id
integer
default:1
required
​
params
(string | integer)[]
required
Required array length: 1 - 2 elements

Response

200 - application/json

Successful transaction submission with receipt

​
jsonrpc
string
Example:

"2.0"

​
id
integer
Example:

1

​
result
object
Last modified on May 18, 2026