Builder RPC (Private orderflow)

Network	URL
Mainnet	https://realtime-rpc.ethgas.com/builder
Hoodi	https://realtime-rpc.ethgas.com/hoodi/builder

eth_sendRawTransaction

Request

{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "eth_sendRawTransaction”,
  "params": ["0x…"],  // Signed raw tx hex
}

Response

{"result":200,"error":null,"id":1}

Submits a raw transaction (serialized and signed) for broadcasting to the network. The transaction data should be encoded as a hexadecimal string starting with 0x. You can create and sign a transaction externally using libraries like web3.js or ethers.js.

Note: For EIP-4844 transactions, the raw form must be in the network format, which includes blobs, KZG commitments, and KZG proofs.