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DELETE
/
api
/
users
/
{userId}
/
orders
Cancel All Orders
curl --request DELETE \
  --url https://trade.predexon.com/api/users/{userId}/orders \
  --header 'x-api-key: <api-key>'
{
  "cancelled": 3
}

{
  "cancelled": 3
}
This only affects Polymarket orders. Kalshi orders are atomic swaps that execute immediately and cannot be cancelled.

​
Use Cases

Emergency Stop

Quickly cancel all pending orders during volatile markets

Account Cleanup

Clear all orders before withdrawing funds or deleting a user

Authorizations

​
x-api-key
string
header
required

Path Parameters

​
userId
string
required

Unique identifier for the user

Query Parameters

​
venue
enum<string>

Filter by venue

Available options:
polymarket,
kalshi

Response

200 - application/json

Orders cancelled

​
cancelled
integer

Number of orders that were cancelled