eth_sendRawTransaction

Submits a pre-signed, RLP-encoded transaction to the network and returns its hash.

Flashblocks: Submit to https://mainnet.base.org to have your transaction considered for the next Flashblock (~200ms). Use base_transactionStatus to confirm receipt in the mempool and subscribe to newFlashblockTransactions to detect pre-confirmation.

Denim: Denim replaces Flashblocks with canonical 200ms blocks. Denim is live on Base Sepolia and is planned for Base Mainnet. On each network where Denim is active, Flashblocks subscriptions such as newFlashblockTransactions and Flashblocks preconfirmation state are unavailable. To update your integration, see Migrate From Flashblocks. For activation status, see the Denim overview.

Parameters

string

required

The signed transaction as an RLP-encoded hex string. Typically generated by a wallet library such as viem, ethers.js, or web3.js.

Returns

string

The 32-byte transaction hash if the transaction was accepted into the mempool.

Error Codes

Code	Message	Description
`-32000`	nonce too low	The transaction nonce is lower than the current account nonce.
`-32000`	insufficient funds for gas * price + value	The sender’s balance cannot cover gas cost and value.
`-32000`	already known	An identical transaction is already in the mempool.
`-32000`	replacement transaction underpriced	A replacement transaction must increase the gas price by at least 10%.

Example

curl https://mainnet.base.org \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":["0x02f86b82210501843b9aca008477359400825208944200000000000000000000000000000000000006872c68af0bb1400080c001a0..."],"id":1}'

curl https://mainnet.base.org \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":["0x02f86b82210501843b9aca008477359400825208944200000000000000000000000000000000000006872c68af0bb1400080c001a0..."],"id":1}'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"
}

Overview

CLIs

Base Chain API

Tokenized Stocks API

Base Verify API

Migrated Documentation

Parameters

Returns

Error Codes

Example

​Parameters

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​Example

Parameters

Returns

Error Codes

Example