# Builder RPC (Private orderflow)

| Network | URL                                                                                                   |
| ------- | ----------------------------------------------------------------------------------------------------- |
| Mainnet | <https://realtime-rpc.ethgas.com/builder>                                                             |
| Hoodi   | [https://realtime-rpc.ethgas.com/hoodi/builder](<https://realtime-rpc.ethgas.com/hoodi/builder&#xA;>) |

### eth\_sendRawTransaction

{% tabs %}
{% tab title="Request" %}

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

```

{% endtab %}

{% tab title="Response" %}

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

{% endtab %}
{% endtabs %}

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](https://web3js.readthedocs.io/) or [ethers.js](https://docs.ethers.org/).

**Note:** For [EIP-4844](https://eips.ethereum.org/EIPS/eip-4844) transactions, the raw form must be in the network format, which includes blobs, KZG commitments, and KZG proofs.


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