GeminiGemini
SandboxGet API key
  • Crypto Trading
  • Prediction Markets
Resources
  • Changelog

© 2026 Gemini Space Station, Inc.

Gemini Crypto Exchange LogoGemini Crypto Exchange Logo
REST APIs
    Orders
    Market Data
    Derivatives
    Margin Trading
    Staking
    Clearing
    Instant Orders
WebSocket
    AuthenticationMessage Format
    Streams
      Book TickerL2 Partial DepthL2 Differential DepthTrade StreamOrder EventsBalance Updates
    Playground
      Overviewconninfopingtimesubscribeunsubscribelist_subscriptionsdepthorder.placeorder.cancelorder.cancel_allorder.cancel_session
Agentic
FIX
    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
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.

Last modified on April 17, 2026
Establishing a ConnectionWhen Can Sequence Numbers Reset