> ## 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

> 代理 Solana 的 sendTransaction JSON-RPC，直接将单笔已签名交易转发给质押验证者进行处理。

<Note>
  在 endpoint 后追加 `?anti_mev=1` 即可启用三明治攻击防护。详情见 [Anti-MEV](/cn/solana/overview/anti_mev)。
</Note>

## 请求

### 端点：

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

### JSON-RPC 参数：

<ParamField path="params[0]" type="string" required>
  完全签名的交易，Base64 编码字符串
</ParamField>

<ParamField path="params[1]" type="object" required>
  编码配置对象

  <Expandable title="params[1] 属性" defaultOpen>
    <ParamField path="encoding" type="string" required>
      交易编码格式，必须为 `base64`
    </ParamField>
  </Expandable>
</ParamField>

## JSON-RPC 响应结果

<ResponseField name="result" type="string" required>
  交易签名。结果格式与 [Solana RPC 文档](https://solana.com/docs/rpc/http/sendtransaction)一致
</ResponseField>

<RequestExample dropdown>
  ```shell 请求(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 响应 (200) theme={null}
  {
    "jsonrpc": "2.0",
    "result": "<tx_signature>",
    "id": 1
  }
  ```
</ResponseExample>