POST

Cancel Order

Cancel a single open or partially filled order. The order must belong to the authenticated user. For buy orders, locked cash is returned to the wallet. For sell orders, locked shares are unlocked.

Endpoint

POST /api/v1/cancel-order

Request Body

Parameter	Type	Required	Description
orderId	UUID	Yes	The ID of the order to cancel

Response

Returns the canceled order object on success (status 200).

{
  "id": "clxyz...",
  "marketId": "clxyz...",
  "walletId": "clxyz...",
  "side": "BUY",
  "outcome": "YES",
  "price": 65,
  "quantity": 10,
  "filledQuantity": 3,
  "status": "PARTIALLY_FILLED_CANCELLED",
  "createdAt": "2026-03-17T12:00:00.000Z",
  "canceledAt": "2026-03-17T14:30:00.000Z"
}

Errors

Status	Description
400	Invalid request body or order is not open/partially filled
401	Invalid or revoked API key
403	Order does not belong to the authenticated user
404	Order not found

Example

import requests

API_KEY = "your_api_key"
BASE_URL = "https://www.vancouverpx.ca/api/v1"

def cancel_order(order_id: str) -> dict:
    response = requests.post(
        f"{BASE_URL}/cancel-order",
        json={"orderId": order_id},
        headers={"Authorization": f"Bearer {API_KEY}"},
    )
    response.raise_for_status()
    return response.json()

canceled = cancel_order("your-order-uuid")
print(f"Canceled order {canceled['id']} — status: {canceled['status']}")