Cancel Order

Endpoint: DELETE /orders/{order_id}

Cancels an open order. Note that because FaaSFi executes atomically across multiple chains, a "Cancel" request attempts to cancel the child orders on the underlying platforms. If a child order has already filled on the base layer (e.g., on the Polygon blockchain), it cannot be reversed.

Page: Get Fills

Endpoint: GET /orders/fills

Returns a detailed breakdown of how a parent order was executed.

Response Example:

{
  "order_id": "ord_12345",
  "total_amount": 50000,
  "avg_price": 0.652,
  "fills": [
    { "venue": "polymarket", "amount": 30000, "price": 0.65 },
    { "venue": "kalshi", "amount": 20000, "price": 0.655 }
  ]
}