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

# Cancel order

> Cancel an open limit order by its ID.

Cancel an open limit order. Only orders with a status of `open` or `partial_filled` can be canceled. Orders that are already `filled`, `canceled`, or `processing` cannot be canceled.

## Endpoint

```
PATCH https://api.futuur.com/orders/{id}/cancel/
```

## Authentication

<Note>
  This endpoint requires HMAC authentication. Include the `Key`, `Timestamp`, and `HMAC` headers on every request. See the [authentication guide](/authentication) for signing instructions.
</Note>

## Request

<ParamField path="id" type="integer" required>
  The ID of the limit order to cancel.
</ParamField>

This endpoint does not accept a request body.

## Response

Returns `204 No Content` on success. No response body is returned.

<Warning>
  Attempting to cancel an order that is already `filled`, `canceled`, or in `processing` state will return a `400` or `404` error. Verify the order status using [List orders](/api-reference/orders/list) before canceling.
</Warning>

## Example

<CodeGroup>
  ```bash cURL theme={null}
  curl --request PATCH \
    --url "https://api.futuur.com/orders/10482/cancel/" \
    --header "Key: pk_live_abc123def456" \
    --header "Timestamp: 1712534400" \
    --header "HMAC: 3a9f2c1b...sha512signature"
  ```
</CodeGroup>

```
HTTP/1.1 204 No Content
```