Fills - Tradara

A fill is a single execution against an order. One order can produce many fills (partial fills). Fills are immutable. Use fills for:

Execution reports, fee reconciliation, and tax accounting.
Auditing exactly which price + quantity + fee made up each order’s outcome.
Real-time risk monitoring across all of an account’s orders.

For order-level state (PENDING, FILLED), use Orders. For round-trip position records, use Trades.

Endpoints

Method	Path	Page
`GET`	`/v1/fills`	List fills
`GET`	`/v1/fills/{execution_id}`	Get fill
`GET`	`/v1/orders/{order_id}/states`	Order state history

Fill object

{
  "execution_id": "exe_01HW8G2K3P",
  "order_id": "ord_01HW8G2K3P",
  "account_id": "5b1c...",
  "instrument_id": "1111...",
  "side": "BUY",
  "quantity": 1,
  "price": "5800.25",
  "fees": "0.62",
  "liquidity": "TAKER",
  "venue": "CME",
  "executed_at": 1750000000150,
  "received_at": 1750000000160
}

Field	Notes
`execution_id`	Stable, globally unique.
`order_id`	Order this fill belongs to. Join here to the Orders resource.
`liquidity`	`MAKER` or `TAKER`.
`price`, `fees`	Decimal strings.
`executed_at`	Venue match time (Unix ms).
`received_at`	Tradara ingestion time (Unix ms).