# Submit Batched Transactions

### POST /api/v2/submit-batch

#### Description

Submits an atomic bundle of 2-4 signed transactions to NextBlock.

### Request

* **URL: `/api/v2/submit-batch`**
* **Method:** `POST`
* **Headers:**
  * `Content-Type: application/json`
  * `Authorization: <token>`

**Request Body**

```json
{
    "entries": [
        {
            "transaction": {
                "content": "ASrTNkPOTud8TsxOKcumvY7supstxpU204Md03mm7XPZw2Y/zm0wvINTRxEcsI1HmPOYFJ/IDz6OCq7fSqM/LQUBAAEDgIwXPqhLVB/6ZadyORj58IB7OZZgqVvqNrNxdQF2AuILlm3gHQjNYA7I5Y9y2P3umSGL05F3f0ycmaLEwKYbVwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAy7mAVCwl2qlxV1malhPHTmIf/Ndy3WDQQb3uvo/2TlYBAgIAAQwCAAAAQUIPAAAAAAA="
            }
        },
        {
            "transaction": {
                "content": "AVFRplUyysWi0v21B6NVE9t5hMEdDIh1QZNBONweQ/zFgf40D75lazBWAjVyqVI2hNdYpXDJzfP7tMfHav5w2AYBAAEDgIwXPqhLVB/6ZadyORj58IB7OZZgqVvqNrNxdQF2AuILlm3gHQjNYA7I5Y9y2P3umSGL05F3f0ycmaLEwKYbVwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAy7mAVCwl2qlxV1malhPHTmIf/Ndy3WDQQb3uvo/2TlYBAgIAAQwCAAAAQkIPAAAAAAA="
            }
        }
    ]
}
```

### **Response**

**Success (200 OK)**

```json
{
  "signature": "bundle-signature"
}
```

**Error (400 Bad Request)**

```json
{
  "code": 2,
  "message": "fee too low; transaction contains low tip",
  "details": []
}
```

### Notes

* Each `entries[].transaction.content` value must contain a base64-encoded signed transaction.
* Bundles must contain between `2` and `4` transactions.
* This endpoint is available on the HTTP and gRPC paths.
* QUIC does **not** support atomic bundle submission. QUIC sends one raw signed transaction per stream.