Changelog

Changelog for Pacifica's API documentation

2026-01-24

• Update agg_level to 1, 10, 100, 1000, 10000 for api/v1/book and websocket book [UPDATE]

2026-01-20

• Add maker_fee and taker_fee to /api/v1/account endpoint [UPDATE]

2026-01-12

• Add li (last order id) to bbo websocket stream [UPDATE]

2026-01-01

• Add li (last order id) to orderbook websocket stream [UPDATE]

2025-12-16

WebSocket

• Initialization added to account_orders endpoint [UPDATE]

  • account_orders endpoint now sends snapshot of account's open orders upon subscription.

2025-12-06

REST API & WS

• Last order ID added [NEW]

  • Added field in multiple REST and WS endpoints as an exchange-wide identifier to order all exchange events

2025-11-19

REST API

• Market info endpoint updated [UPDATE]

  • Added created_at field to /api/v1/info response showing when each market was listed

WEBSOCKET

• Account positions snapshot [UPDATE]

  • account_positions websocket endpoint now returns immediate snapshot of current positions upon subscription

• Batch orders [NEW]

  • Order batching now supported via websocket

• Best bid offer (BBO) [NEW]

  • bbo endpoint now supported via websocket

  • constantly streams top of book for selected symbol

REST API & WS

• Edit order type added [NEW]

  • Added endpoint in REST and WS to edit price and/or size of existing orders

• Mark price candle added [NEW]

  • Added endpoint in REST and WS to show mark price candles

  • Returns candle data based on mark price instead of traded prices

• Batch order speed bump optimization [UPDATE]

  • Speed bump now applied conditionally based on order types in batch

  • Only applied if batch contains market orders or limit orders with TIF GTC/IOC

  • Speed bump not applied if batch only contains ALO/TOB orders, cancellations, or TP/SL updates

2025-11-12

GENERAL API

• Taker latency increased. [UPDATE]

  • All market orders, TIF GTC, and TIF IOC orders are subject to a ~200ms delay

2025-11-10

REST API & WS

• Top-of-Book (TOB) TIF order type added [NEW]

• Useable in:

  • Frontend GUI under Limit, TIF, TOB (Post Only)

  • Create limit order REST API endpoint

  • Batch order REST API endpoint

  • Create limit order websocket endpoint

2025-11-09

GENERAL API

• Taker latency added. [NEW]

  • All market orders, TIF GTC, and TIF IOC orders are subject to a randomized 50-100ms delay

2025-10-30

REST API

• Cursor based pagination added for all history endpoints [UPDATE]

  • Offset pagination deprecated

2025-10-25

REST API

• List subaccounts [NEW]

  • Added a new endpoint to retrieve subaccount information

WEBSOCKET

• Orderbook websocket [UPDATE]

  • 'book' websocket update interval improved from 500ms to 100ms