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© 2026 Gemini Space Station, Inc.

Overview
Spot
    OverviewGet started
    Orders API
    Market Data API
    Fund Management API
    Instant Orders API
    WebSocket API
    FIX API
      Overview
        Dictionary
        ConnectingAllowed CharactersPrecision on the ExchangeStandard HeaderStandard Trailer
        Session-Level Messages
          LogonLogoutHeartbeatTest RequestResend RequestSequence ResetRejectBusiness Message RejectEstablishing a ConnectionEnding a ConnectionWhen Can Sequence Numbers Reset
      Order Entry
      Market Data
      Drop Copy
Margin
    Overview
    Margin REST API
      Get Margin Account SummaryGet Margin Interest RatesPreview Margin Order Impact
Staking
    Overview
    Staking REST API
      List Staking BalancesStake Crypto FundsUnstake Crypto FundsList Staking Event HistoryList Staking RatesList Staking Rewards
Clearing
    Clearing REST API
      Clearing Orders
      Broker & Trade Operations
Session-Level Messages

Ending a connection

The client may send the server an optional Logout <5> message but the exchange will not interpret its absence as being an abnormal condition.

Under certain conditions, the server may send the client a Logout <5> message where the Text <58> field contains the reason, such as scheduled maintenance.

Establishing a ConnectionWhen Can Sequence Numbers Reset