Last order ID

Pacifica uses last order ID as an exchange-wide identifier to order all exchange events

Overview

last_order_id is an exchange-wide, nonce included in all trading-related API responses. Use it to determine the ordering of events across endpoints without relying on server timestamps.

Why Use It

Server-side timestamps can be affected by clock drift. last_order_id provides guaranteed sequential ordering across all trading events.

Affected Endpoints

REST API

• /api/v1/positions

• /api/v1/trades

• /api/v1/orders

WebSocket

• bbo ('i' field reconciles with 'last_order_id' / 'li' elsewhere)

• trades

• account_positions

• account_orders

• account_order_updates

• account_trades

Notes

• The last_order_id is shared across all above endpoints, allowing you to sequence events from different streams relative to each other.

• For specific response implementation, check each endpoints' docs above.