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Subscribe to order book changes for every market on a single event. The payloads are identical to orderbook_v3:{marketHash}, including marketHash — this channel exists so that watching a whole event costs one channel instead of one per market. This namespace keeps the last 100 publications for 5 minutes, so pass recoverable: true to recover missed messages on reconnect. If a gap comes back recovered: false, re-seed from GET /orderbook-v3/snapshot/event — follow nextKey until it is omitted. CHANNEL NAME FORMAT orderbook_v3_event:{eventId} MESSAGE PAYLOAD FORMAT Identical to orderbook_v3:{marketHash}, including the version field. version is per market, so key your state by marketHash and apply a publication only when its version is strictly greater than the one you hold for that market — see book versioning.
The above returns JSON structured like this:
Last modified on August 21, 2026