> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blockrush.io/llms.txt
> Use this file to discover all available pages before exploring further.

# sendTransaction

> Proxy Solana's sendTransaction JSON-RPC, directly forwarding a single signed transaction to Staked Validator for processing.

<Note>
  Append `?anti_mev=1` to the endpoint to enable sandwich-attack protection. See [Anti-MEV](/en/solana/overview/anti_mev) for details.
</Note>

## Request

### Endpoint:

<Badge color="green">POST</Badge> `/`

### JSON-RPC Parameters:

<ParamField path="params[0]" type="string" required>
  Fully signed transaction, Base64 encoded string
</ParamField>

<ParamField path="params[1]" type="object" required>
  Encoding configuration object

  <Expandable title="params[1] properties" defaultOpen>
    <ParamField path="encoding" type="string" required>
      Transaction encoding format, must be `base64`
    </ParamField>
  </Expandable>
</ParamField>

## JSON-RPC Response Result

<ResponseField name="result" type="string" required>
  Transaction signature. The result format matches the [Solana RPC documentation](https://solana.com/docs/rpc/http/sendtransaction)
</ResponseField>

<RequestExample dropdown>
  ```shell Request(cURL) theme={null}
  curl -X POST 'https://ny.rpc.blockrush.io' \
    -H 'Content-Type: application/json' \
    -H 'x-api-key: <YOUR_API_KEY>' \
    -d '{
      "jsonrpc": "2.0",
      "id": 1,
      "method": "sendTransaction",
      "params": [
        "<base64_encoded_tx>",
        { "encoding": "base64" }
      ]
    }'
  ```
</RequestExample>

<ResponseExample>
  ```json Response (200) theme={null}
  {
    "jsonrpc": "2.0",
    "result": "<tx_signature>",
    "id": 1
  }
  ```
</ResponseExample>