GET `/api/v1/orders/{id}/fills`

Simulated fills of an order.

Scope orders:read
operationId ordersFills

The token needs the scope orders:read, and the person or service account behind it needs the matching privileges and account permissions, exactly as on the screens. See Scopes.

Request

GET /api/v1/orders/{id}/fills

Path parameters

Name	Description	Example
`id`	The id of the order.	`5301`

Headers

Header	Required	Value
`Authorization`	yes	`Bearer <token>`: an OAuth access token (`vat_…`) or a personal access token (`vpt_…`). Get a token

Examples

Keep the token in an environment variable (VESTORIS_TOKEN), never in the script.

curl

curl "https://vestoris.com/api/v1/orders/5301/fills" \
  -H "Authorization: Bearer $VESTORIS_TOKEN"

Python (requests)

import os, requests

r = requests.get(
    "https://vestoris.com/api/v1/orders/5301/fills",
    headers={
        "Authorization": f"Bearer {os.environ['VESTORIS_TOKEN']}",
    },
    timeout=30,
)
r.raise_for_status()  # errors are application/problem+json with a stable "code"
print(r.json())

JavaScript (fetch)

const res = await fetch("https://vestoris.com/api/v1/orders/5301/fills", {
  method: "GET",
  headers: {
    Authorization: `Bearer ${process.env.VESTORIS_TOKEN}`,
  },
});
const data = await res.json();
if (!res.ok) throw new Error(`${data.code}: ${data.detail}`); // problem+json
console.log(data);

Response

200 OK, application/json: FillList. Rate-limit headers: RateLimit-Limit, RateLimit-Remaining, RateLimit-Reset.

Response fields

Field	Type	Description
`order_id`	id (string)	The order's id.
`data`	list of Fill	The records of this page or list.
`data[].id`	id (string)	The record's id (a string of digits).
`data[].order_id`	id (string)	The order's id.
`data[].quantity`	decimal string or null	Shares in this fill.
`data[].price`	decimal string or null	Fill price (simulated).
`data[].arrival_price`	decimal string or null	The simulated price when the order was released (the benchmark for slippage).
`data[].market_price`	decimal string or null	The simulated market price at the fill.
`data[].slippage_bps`	decimal string or null	Fill price against arrival price, in basis points (positive: worse).
`data[].sim_time`	string	The simulated market time of the fill.
`data[].created_at`	date-time or null	When it was created.
`data[].simulated`	boolean	Always true: simulated data, paper trading.

Example response

HTTP/1.1 200 OK
Content-Type: application/json

{
    "order_id": "5301",
    "data": [
        {
            "id": "1042",
            "order_id": "5301",
            "quantity": "450",
            "price": "231.58",
            "arrival_price": "231.45",
            "market_price": "231.60",
            "slippage_bps": "3.2",
            "sim_time": "10:30",
            "created_at": "2026-10-27T14:30:00Z",
            "simulated": true
        }
    ]
}

Example values. Your values depend on your firm's data; prices, orders and fills are simulated.

Status codes and errors

Errors are application/problem+json (RFC 9457) with a stable code to program against; the detail says what to fix. See Errors.

Status	When	Problem codes
200	Success
400	The request is malformed	`invalid_request`
401	No token, or it is invalid or expired	`invalid_token`
403	The token lacks the scope, or the person or service account behind it lacks the privilege or account permission	`insufficient_scope` `forbidden` `ip_not_allowed`
404	Not found, or not visible to you (the API never confirms what you may not see)	`not_found`
429	Rate limited: wait for Retry-After seconds	`rate_limited`

{
    "type": "https://vestoris.com/developers/errors#validation_failed",
    "title": "Validation failed",
    "status": 422,
    "detail": "Quantity must be greater than zero.",
    "code": "validation_failed",
    "instance": "/api/v1/orders/5301/fills"
}

On the screens

The same thing in the app is explained in: