> For the complete documentation index, see [llms.txt](https://docs.quasar.win/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.quasar.win/api/eth_cancelbundle.md).

# eth\_cancelBundle

`eth_cancelBundle` is used to prevent a submitted bundle from being included on-chain.

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_cancelBundle",
  "params": [
    {
      replacementUuid // String, to uniquely identify submission
    }
  ]
}
```

{% hint style="info" %}
`replacementUuid` must have been set when bundle was submitted.
{% endhint %}

Example Response:

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