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v2.13.0

· 2 min read

New​

WS Market Data Pro API​

We have released our new WebSocket Market Data Pro API. It provides non-conflated Level 2 (L2) order book updates with precise sequence tracking for every update.

info

This API is available for use starting from November 17, 2025.

What it is​

WS Market Data Pro API streams each order book change as a separate event. Every event is tagged with a startMdSeqNo and a endMdSeqNo that you can use to verify the order of events and make sure you don’t any changes in the order book.

Why it matters​

This API enables you to:

  • Track changes in the order book in real time
  • Detect and recover from missed updates

Who it is for​

Engineers and trading systems that rely on low-latency, full-fidelity market data and maintain their own local order books.

Compatibility​

The existing REST and WebSocket APIs remain available and unchanged. Migration is optional — use WS Market Data Pro only if you need granular, non-conflated updates with sequence control.

For implementation details, see: