FIX API

Deribit FIX API is a subset of FIX version 4.4, but also includes some tags from 5.0 version and several custom tags. Deribit uses the standard header and trailer structure for all messages. To enable the API, sign in and go to Account > Security > API Tab and use the checkbox. 'Access Secret' is the user's secret key provided by Deribit. Important Note: Do not reveal to anybody your 'Access Secret', as it can be used to gain full control over your account.

The FIX server can be reached at www.deribit.com:9880. The FIX server for the test network can be reached at test.deribit.com:9881.

Each request message can include:

Tag Name Type Required Comments
8 BeginString String Yes Identifies beginning of new message and protocol version. Must always be first in the message.
9 BodyLength Length Yes Message length in bytes, not including fields 8, 9 and 10. See refer to FIX specification on how to compute this field. Must always be the first field in the message.
35 MsgType String Yes The type of the message. See below for available types
49 SenderCompID String Yes A user defined client name
56 TargetCompID String Yes Constant value: DERIBITSERVER
34 MsgSeqNum SeqNum Yes A sequence number for the message, starts with 1, and must be incremented by 1 for every message.
52 SendingTime UTCTimestamp No The time the request is sent. This field is ignored by the server
10 CheckSum String Yes The checksum of all of all preceding messages. See refer to FIX specification on how to compute this field. Must always be the last field in the message.

Responses sent by the server will at least include:

Tag Name Type Comments
8 BeginString String Identifies beginning of new message and protocol version. Must always be first in the message.
9 BodyLength Length Message length in bytes, not including fields 8, 9 and 10. See refer to FIX specification on how to verify this field. Must always be the first field in the message.
35 MsgType String The type of the message. See below for available types
49 SenderCompID String Constant value: DERIBITSERVER
56 TargetCompID String A user defined client name
34 MsgSeqNum SeqNum A server-chosen sequence number for the message.
52 SendingTime UTCTimestamp The time the request is sent. This field is ignored by the server
10 CheckSum String The checksum of all of all preceding messages. See refer to FIX specification on how to verify this field. Must always be the last field in the message.

Logon(A)

Logon(A) must the first message sent by the client to initiate a session. If authentication succeeds, the exchange should echo the message back to the client. If authentication fails, the exchange will respond with a LogOut(5) message with an appropriate reason.

Arguments

Tag Name Type Required Comments
108 HeartBtInt int Yes Used to declare the timeout interval in seconds for generating heartbeats.
96 RawData Yes data Base64 encoded nonce (see below)
553 Username Yes String API Access Key. This can be obtained from the API tab on your account settings.
554 Password Yes String See below
9001 CancelOnDisconnect Boolean No Boolean, to enable or disable session-level cancel on disconnect. Default - false(N).

The RawData(96) tag should be a base64 encoded nonce. The nonce consists of randomly chosen bytes. If a nonce is re-used, the authentication will fail. For safety reasons, it is important that the nonce is sufficiently long. We recommend at least 32 bytes. The nonce can be up to 512 bytes.

The Password(553) tag should contain a base64 encoded SHA256 hash of the nonce and the access secret: base64(sha256(nonce ++ access_secret)).

CancelOnDisconnect(9901) controls "Close on Disconnect". If this tag is not provided, the default setting from the account is used.

Response

When the login is successful, the server will echo back the request.

If the login was not successful, the server will respond with a Logout(5) message, and close the connection.

Logout(5)

Logout(5) can be sent by either party in order to terminate a session. The sending party should always wait for the echo of the logout request before they close the socket. Closing connections in any other way is considered abnormal behaviour. Nonetheless, if CancelOnDisconnect(9001) was set at Logon, all orders will be cancelled at Logout.

Arguments

Tag Name Type Required Comments
58 text String No Free format text string specifying the logout reason. This is ignored by the server

Heartbeat(0)

When either end of a FIX connection has not sent or received any data for HeartBtInt seconds (as specified in the Logon(A) message), it will transmit a Heartbeat(0) message. When either end of a FIX connection has not received any data for HeartBtInt seconds, it will transmit a Test Request(1) message. If there is still no response, the session should be considered lost and corrective action should be initiated.

Arguments

Tag Name Type Required Comments
112 TestReqId String Varies The identifier when responding to Test Request(1) message. When not responding to a Test Request(1) message, this tag can be left out

Response

When the heartbeat has been received successfully, the server will echo back the request as confirmation.

Test Request(1)

The Test Request(1) message forces a heartbeat from the opposing application. The opposing application responds with a Heartbeat(0) containing the TestReqID(112).

Arguments

Tag Name Type Required Comments
112 TestReqId String Yes Mirrors the original request ID.

Resend Request(2)

The Resend Request(2) message is used by the server to initiate the retransmission of messages. This function is utilized if a sequence number gap is detected, if the receiving application lost a message, or as a function of the initialization process.

Arguments

Tag Name Type Required Comments
7 BeginSeqNo Yes The first message to repeat
16 EndSeqNo Yes The last message to repeat

Reject(3)

The Reject(3) message should be issued when a message is received but cannot be properly processed due to a session-level or data structure rule violation. An example of when a reject may be appropriate would be the receipt of a message with invalid basic data (e.g. missing tags) which successfully passes decryption.

Arguments

Tag Name Type Required Comments
45 RefSeqNum SeqNum Yes MsgSeqNum(34) of the rejected message
372 RefMsgType String No The MsgType(35) of the FIX message being referenced
373 SessionRejectReason int No Code to identity reason for rejection. See FIX specification for possible values.
58 Text String No Text string explaining the reason for rejection.

Security List Request(x)

The SecurityListRequest(x) message is used to return a list of securities (instruments) from the Deribit.

Arguments

Tag Name Type Required Comments
320 SecurityReqId String Yes A user-generated ID for this request. This can be used to match the request to the response.
559 SecurityListRequestType int Yes 0 or 4 – in any case list of instruments is returned

Response

The server will respond with a Security List(y) message, where the SecurityReq(320) is equal to that of the request.

Security List(y)

The SecurityList(y) message is used to return a list of securities that matches the criteria specified in a Security List Request(x).

Arguments

Tag Name Type Required Comments
320 SecurityReqId String Yes The SecurityReqId(320) of the request that this is a response for
322 SecurityResponseID string Yes Identifier for the Security List(x) message
560 SecurityRequestResult int Yes 0 indicates a successful response. This is the only possible value in the Deribit FIX API
146 NoRelatedSym int N Specifies the number of repeating instruments specified
=>55 Symbol String N Common, "human understood" representation of the security, e.g., BTC-28JUL17, see instrument naming convention
=>107 SecurityDesc String N Free form security description. At the time of writing, this is either 'future' or 'option'
=>167 SecurityType String N FUT or OPT
=>201 PutOrCall int N Used to express option right, 0 – call, 1 – put.
=>202 StrikePrice Price N Strike price
=>947 StrikeCurrency Currency N Strike Currency
=>15 Currency N Currency Currency of option
=>2576 InstrumentPricePrecision int N number of decimal places for instrument prices (usually 4 for options, 2 for futures)
=>225 IssueDate UTCTimestamp N Date instrument was issued.
=>541 MaturityDate UTCTimestamp N Expiration date, YYYYMMDD
=>1079 MaturityTime UTCTimestamp N Expiration time
=>562 MinTradeVol Qty N The minimum trading volume for a security
=>63 SettlType String N Indicates order settlement period. E.g., M1 – month, W1 – week, W2 – 2 weeks etc
=>120 SettlCurrency Currency N Currency code of settlement denomination.
=>479 CommCurrency Currency N Specifies currency to be use for Commission.

Market Data Request(v)

Market Data Request(V) is used by the trading platform to request market data in the snapshot or the incremental form. Deribit uses his message for order book requests and its change notification.

Arguments

Tag Name Type Required Comments
55 Symbol String Yes Instrument symbol
262 MdReqId String Yes Unique ID assigned to this request.
263 SubscriptionRequestType int Yes 0 = Snapshot, 1 = Snapshot + Subscribe, 2 = Unsubscribe
264 MarketDepth int No Default 20
100007 DeribitTradeAmount int No Amount of trades returned in the snapshot response to request for snapshot of recent trades, default 20, maximum 100000
100008 DeribitSinceTimestamp int No UTC Timestamp in milliseconds (integer number of milliseconds), if specified, the response returns the trades happened since that timestamp, applicable to the request for recent trades snapshot
Group MDEntryTypes
267 NoMdEntryTypes int Yes Number of entry types in the request.
=>269 MDEntryType int Yes 0 = Bid (Bid side of the order book), 1 = Offer (Ask side of the order book), 2 = Trade (Info about recent trades)

Response

If the server is unable to supply the requested data, it will respond with a Market Data Request Reject(Y) message.

If the request called for a snapshot (i.e. SubscriptionRequestType(263)=0 or SubscriptionRequestType(263)=1), the server will respond with a Market Data - Snapshot/Full Refresh(W) message.

If the request called for a snapshot (i.e. SubscriptionRequestType(263)=0 or SubscriptionRequestType(263)=1), the server will start sending with a Market Data - Incremental Refresh(X) messages.

Market Data Request Reject(Y)

If a Market Data Request(V) message is not accepted, the exchange responds with a Market Data Request Reject(Y) message

Arguments

Tag Name Type Required Comments
58 Text String No Free format text string
262 MDReqID String Yes ID of the original request
281 MDReqRejReason char Yes

Market Data Snapshot/Full Refresh(W)

Market Data Snapshot/Full Refresh(W) is used as the response to a Market Data Request(V) message.

Arguments

Tag Name Type Required Comments
55 Symbol String Yes Instrument symbol
262 MDReqID String No ID of the original request, if it is applicable
100087 TradeVolume24h Qty No Defines 24h trade volume for the Symbol in the corresponding contract units
268 NoMDEntries int Yes Repeating group . Specifies the number of entries in the group.
=>269 MDEntryType int No 0 = Bid (Bid side of the order book), 1 = Offer (Ask side of the order book), 2 = Trade (in case of request for info about recent trades)
=>270 MDEntryPx Price No Price of an entry
=>271 MDEntrySize Qty No Size of an entry
=>272 MDEntryDate UTCTimestamp No Timestamp for trade
=>100009 DeribitTradeId int No Id of the trade, in case of the request for trades
=>54 Side int No Side of trade (1 = Buy, 2 = Sell)
=>37 OrderId String No For trade – order id
=>198 SecondaryOrderId String No For trade – matching order id
=>39 OrdStatus No int For trade – order status (0 = New, 1 = Partially filled, 2 = Filled, 4 = Cancelled)
=>100010 DeribitLabel No String User defined 32 character label of the order, in case of the request for trades

Market Data Incremental Refresh(x)

Market Data – Incremental Refresh(X) message is used for incremental updates in case of Market Data Request(V) for Snapshot + Subscribe

Arguments

Tag Name Type Required Comments
55 Symbol String Yes Instrument symbol
262 MDReqID String No ID of the original request, if it is applicable
100087 TradeVolume24h Qty No Defines 24h trade volume for the Symbol in the corresponding contract units
268 NoMDEntries int Yes Repeating group . Specifies the number of entries in the group.
=>269 MDEntryType int No 0 = Bid (Bid side of the order book), 1 = Offer (Ask side of the order book), 2 = Trade (in case of request for info about recent trades)
=>270 MDEntryPx Price No Price of an entry
=>271 MDEntrySize Qty No Size of an entry
=>272 MDEntryDate String UTCTimestamp Timestamp for trade
=>100009 DeribitTradeId int No Id of the trade, in case of the request for trades
=>54 Side int No Side of trade (1 = Buy, 2 = Sell)
=>37 OrderId String No For trade – order id
=>198 SecondaryOrderId String No For trade – matching order id
=>39 OrdStatus No int For trade – order status (0 = New, 1 = Partially filled, 2 = Filled, 4 = Cancelled)
=>100010 DeribitLabel No String User defined 32 character label of the order, in case of the request for trades
=>44 IndexPrice Price No For trades, this is the index price at the trade moment (Deribit index).

New Order Single(D)

The NEW ORDER SINGLE(D) is used by the client to submit new orders to the exchange. Note Deribit doesn't store client identifiers (for the sake of speed of execution), i.e., client software should manage matching client-server identifiers using.

Arguments

Tag Name Type Required Comments
11 ClOrdID String Yes Unique identifier for the order as assigned by the client
54 Side int Yes 1 = Buy, 2 = Sell
38 OrderQty Qty Yes Order quantity
44 Price Price Yes Price
55 Symbol String Yes Instrument symbol, e.g., BTC-1JAN16
18 ExecInst int No Currently is used to place POST ONLY orders: 6 = "Participate don't initiate"
40 OrdType char No Order type. Valid values: 1 = Market, 2 = Limit. (default Limit)
59 TimeInForce char No Specifies how long the order remains in effect. Absence of this field is interpreted as "Good Till Cancel". Valid values: 1 = Good Till Cancel (GTC), 3 = Immediate or Cancel (IOC), 4 = Fill or Kill (FOK)

Response

Upon receiving a new order, the exchange responds with the Execution Report(8) message communicating whether the order was accepted or rejected.

Tag Name Required Comments
11 ClOrdID Yes Deribit replaces this field with the own value assigned by the server (it is not the client id from New Order Single)
41 OrigClOrdId Yes The original value assigned by the client in the New Order Single(D) message
39 OrdStatus char 0 = New, 8 = Rejected
54 Side char 1 = Buy, 2 = Sell
60 TransactTime Yes Time the transaction represented by this Execution Report occurred. Fix timestamp.
151 LeavesQty Yes Order quantity open for further execution (LeavesQty = OrderQty - CumQty)
14 CumQty Yes Total executed quantity or 0.0
38 OrderQty Yes Order quantity
40 OrdType Yes 2 = Limit, Limit orders only
44 Price Yes Price
103 OrdRejReason Yes
58 Text No Free format text string, usually exceptions
207 SecurityExchange No "Deribit"
55 Symbol Yes Instrument symbol
6 AvgPx No Average execution price or 0.0 if not executed yet or rejected
1362 NoFills No Number of immediate fill entries for the order
=>1363 FillExecID No Unique identifier of execution, concatenated via '#' symbol and trade sequence number, e.g., BTC-28SEP18#38.
=>1364 FillPx No Price of this partial fill
=>1365 FillQty No Quantity bought/sold on this partial fill

Order Cancel Request(F)

This message requests the cancellation of a particular order. If an order has been partially filled, only the remaining quantity can be cancelled. The request should be accepted only if an order can successfully be cancelled without executing further. The server generated identifiers should be used as OrigClOrdId, Deribit doesn't store client identifiers.

Arguments

Tag Name Required Comments
11 ClOrdID Yes Order identifier
41 OrigClOrdId Yes Order identifier assigned by Deribit

Response on failure

Order Cancel Reject(9) is issued by the exchange upon receipt of Order Cancel Request(F) message which cannot be executed.

Tag Name Required Comments
52 SendingTime Yes
11 ClOrdID Yes Order identifier
41 OrigClOrdId Yes Order identifier assigned by Deribit
39 OrdStatus No If it is applicable
58 Text No Text string explaining the reason for rejection

Response on success

The following Execution Report(8) is sent by the exchange upon successfully processing a cancel request.

Tag Name Required Comments
52 SendingTime Yes
11 ClOrdID Yes Deribit replaces this field with the own value assigned by the server (it is not the client id from New Order Single)
41 OrigClOrdId Yes The original value assigned by the client in the New Order Single(D) message
39 OrdStatus Yes 0 = New, 1 = Partial, 4 = Cancelled, 8 = Rejected
58 Text Yes Text string describing the result

Order Mass Status Request(AF)

Order Mass Status Request(AF) message requests the status of currently open orders. The exchange should respond with a series of Execution Report(8) messages detailing orders.

Arguments

Tag Name Required Comments
584 MassStatusReqID Yes Client-assigned unique ID of this request
585 MassStatusReqType Yes Specifies the scope of the mass status request. (see below)

This message can be used in two ways: to request status of all your open orders, or to request the status of a single order (which needn't be open).

To request the status of all orders, choose a random MassStatusRequestId, and set MassStatusReqType=7. The server will respond with a series of Execution Reports(8) messages, where the first message contains MassStatusReqType=7 and TotNumReports will be set to the number of reports to be expected as a follow-up.

Response

When the client requests the status of current orders, the exchange should reply with a series of special Execution Reports(8), one for every order requested.

Tag Name Type Required Comments
11 ClOrdID string Yes Deribit replaces this field with the own value assigned by the server (it is not the client id from New Order Single)
41 OrigClOrdId string Yes For Order Mass Status Request(AF), OrigClOrdId is equal to the ClOrdID, i.e., order identifier assigned by Deribit
39 OrdStatus char Yes 0 = New, 1 = Partial, 2 = Filled, 3 = Done, 4 = Cancelled, 8 = Rejected
54 Side char Yes 1 = Buy, 2 = Sell
60 TransactTime UTCTimestamp Yes Time the transaction represented by this Execution Report occurred.
38 OrderQty Qty Yes Order quantity
40 OrdType char Yes 2 = Limit, Limit orders only
44 Price Price Yes Price
103 OrdRejReason int Yes See fix specification for possible values
58 Text String No Free format text string, usually exceptions
207 SecurityExchange String No "Deribit"
55 Symbol String Yes Instrument symbol
6 AvgPx Price No Average execution price, filled.

When responding to a MassStatusReqType=7 request, the server precedes the Execution Reports(8) messages with a special Execution Reports(8) message:

Tag Name Type Required Comments
584 MassStatusReqID String Yes The MassStatusReqID from the request. (Only for the first message response to a MassStatusReqType=7 request.)
585 MassStatusReqType int Yes The MassStatusReqType from the request. (Only for the first message response to a MassStatusReqType=7 request.)
911 TotNumReports int Yes The total number of reports following this initial report

Request For Positions(AN)

Request For Positions(AN) is used by the owner of a position to request a Position Report.

Arguments

Tag Name Required Comments
710 PosReqID Yes Unique identifier for the Request for Positions(AN) as assigned by the submitter.
724 PosReqType Yes 0 = Positions (currently)

Response

The server will respond with a Position Report(AP) message.

Position Report(AP)

The Position Report(AP) message is returned by the holder of a position in response to a Request for Position(AN) message.

Arguments

Tag Name Required Comments
721 PosMaintRptID Yes Unique identifier for this position report
710 PosReqID No Unique identifier for the Request for Positions associated with this report.
724 PosReqType No 0 = Positions (currently)
728 PosReqResult No 0 = success, 1 = unsupported request for positions
702 NoPositions No Number of position entries following
=>704 LongQty No Qty for long position (0 for short position)
=>705 ShortQty No Qty for short position (0 for long position)
=>55 Symbol No Instrument symbol
=>883 UnderlyingEndPrice No Mark price (reference price)
=>54 Side No 1 = Buy, 2 = Sell
=>730 SettlPrice No Average price
=>96 RawData No Additional info, semi-colon separated: maintenance margin;initial margin;floating P/L

User Request(BE)

This message is used to request a report on a user's status and user account info.

Arguments

Tag Name Required Comments
923 UserRequestID Yes The request ID
924 UserRequestType Yes Should be equal to 4 (Request individual user status), only UserRequestType=4 supported for now
553 Username Yes API authenticated 'Access Key', user can request only own info, should be the same as for previous LOGON(A)

Response

The server will respond with a User Response(BF) message.

User Response(BF)

This message is used to respond to a USER REQUEST(BE) message, it reports the status of the user and user's account info.

Arguments

Tag Name Required Comments
923 UserRequestID Yes The request ID
553 Username Yes User's API 'Access Key'
926 UserStatus N 1 = logged in, current implementation accepts USER REQUEST-s only from logged in users
100001 DeribitUserEquity N Equity of the user
100002 DeribitUserBalance N Balance of the user
100003 DeribitUserInitialMargin N Initial margin of the user
100004 DeribitUserMaintenanceMargin N Maintenance margin of the user
100005 DeribitUnrealizedPl N Unrealized P/L of the user
100006 DeribitRealizedPl N Realized P/L of the user

Order Cancel/Replace Request(G)

To change/edit the parameters of an existing order

Arguments

Tag Name Type Required Comments
41 OrigClOrdID String Yes
11 ClOrdId String Yes
60 TransactTime UTCTimestamp Yes
54 Side char Yes original side, 1=buy, 2=sell
38 OrderQty Qty order quantity
40 OrdType char Yes currently 2 - 'limit'
44 Price Price order price
55 Symbol String instrument name, while not required, the server will be able to respond faster if it is supplied.

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