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DELETE
/
v1
/
orders
/
{order_id}
Cancel Order
curl --request DELETE \
  --url https://api.example.com/v1/orders/{order_id}
{
  "success": true,
  "data": {
    "id": "<string>",
    "status": "<string>",
    "cancelled_at": "<string>",
    "filled_amount": 123
  }
}

​
Cancel Order

Cancel an open order. Only orders with status open or pending can be cancelled.

​
Endpoint

DELETE https://api.matchr.xyz/v1/orders/{order_id}

​
Path Parameters

​
order_id
string
required
The order ID to cancel

​
Example Request

curl -X DELETE "https://api.matchr.xyz/v1/orders/ord_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"

​
Response

​
success
boolean
Whether the cancellation succeeded
​
data
object
Cancelled order details

​
Example Response

{
  "success": true,
  "data": {
    "id": "ord_abc123",
    "market_id": "mkt_yes123",
    "status": "cancelled",
    "amount": 100,
    "filled_amount": 0,
    "cancelled_at": "2025-10-15T14:45:00Z"
  }
}

​
Cancel All Orders

Cancel all open orders for a specific market or all markets.

​
Endpoint

DELETE https://api.matchr.xyz/v1/orders

​
Query Parameters

​
market_id
string
Cancel orders only for this market (optional)
​
side
string
Cancel only buy or sell orders (optional)

​
Example Request

# Cancel all orders
curl -X DELETE "https://api.matchr.xyz/v1/orders" \
  -H "Authorization: Bearer YOUR_API_KEY"

# Cancel orders for a specific market

curl -X DELETE "https://api.matchr.xyz/v1/orders?market_id=mkt_yes123" \
 -H "Authorization: Bearer YOUR_API_KEY"

# Cancel only buy orders

curl -X DELETE "https://api.matchr.xyz/v1/orders?side=buy" \
 -H "Authorization: Bearer YOUR_API_KEY"

​
Response

{
  "success": true,
  "data": {
    "cancelled_count": 5,
    "cancelled_orders": [
      { "id": "ord_abc123", "market_id": "mkt_yes123" },
      { "id": "ord_abc124", "market_id": "mkt_yes123" },
      { "id": "ord_abc125", "market_id": "mkt_no456" },
      { "id": "ord_abc126", "market_id": "mkt_no456" },
      { "id": "ord_abc127", "market_id": "mkt_yes789" }
    ]
  }
}

​
Get Order Status

Check the status of a specific order.

​
Endpoint

GET https://api.matchr.xyz/v1/orders/{order_id}

​
Example Request

curl -X GET "https://api.matchr.xyz/v1/orders/ord_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"

​
Response

{
  "success": true,
  "data": {
    "id": "ord_abc123",
    "market_id": "mkt_yes123",
    "platform": "polymarket",
    "side": "buy",
    "type": "limit",
    "status": "open",
    "amount": 100,
    "price": 0.52,
    "filled_amount": 0,
    "average_fill_price": null,
    "fees": 0,
    "created_at": "2025-10-15T14:35:00Z",
    "updated_at": "2025-10-15T14:35:00Z"
  }
}

​
List Open Orders

Get all open orders for the authenticated user.

​
Endpoint

GET https://api.matchr.xyz/v1/orders

​
Query Parameters

​
status
string
default:"open"
Filter by status: open, pending, filled, cancelled, all
​
market_id
string
Filter by market
​
side
string
Filter by side: buy, sell
​
limit
number
default:"50"
Number of results (max: 100)
​
offset
number
default:"0"
Pagination offset

​
Example Request

curl -X GET "https://api.matchr.xyz/v1/orders?status=open&limit=20" \
  -H "Authorization: Bearer YOUR_API_KEY"

​
Response

{
  "success": true,
  "data": [
    {
      "id": "ord_abc123",
      "market_id": "mkt_yes123",
      "platform": "polymarket",
      "side": "buy",
      "type": "limit",
      "status": "open",
      "amount": 100,
      "price": 0.52,
      "filled_amount": 0,
      "created_at": "2025-10-15T14:35:00Z"
    },
    {
      "id": "ord_abc124",
      "market_id": "mkt_no456",
      "platform": "kalshi",
      "side": "sell",
      "type": "limit",
      "status": "open",
      "amount": 50,
      "price": 0.45,
      "filled_amount": 25,
      "created_at": "2025-10-15T13:20:00Z"
    }
  ],
  "meta": {
    "page": 1,
    "limit": 20,
    "total": 2
  }
}

​
Error Codes

CodeDescription
400Invalid parameters
401Missing or invalid API key
404Order not found
409Order already filled or cancelled
429Rate limit exceeded
500Server error

​
Example Error Response

{
  "success": false,
  "error": {
    "code": "ORDER_NOT_CANCELLABLE",
    "message": "Order has already been filled",
    "details": {
      "order_id": "ord_abc123",
      "status": "filled"
    }
  }
}