FIX API for OKX

Trade on OKX using Axon Trade FIX API

FIX API for trading and market data streaming. Can be integrated with existing O/EMS systems or used for building new solutions. Suitable for all trading activities, including HFT

Straight to the point

Need FIX connectivity to OKX?

Axon Trade EMS offers real-time normalized L2 data and execution services via FIX 4.4. If FIX is already part of your stack, and you’re looking for a vendor to handle OKX routing, you’re in the right place.

Features

What You Will Get

Everything you need to trade across top crypto exchanges using a single FIX 4.4 API – fast, normalized, and battle-tested

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Execution lifecycle

Orders can be submitted, modified, canceled, and tracked through all status transitions via consistent ExecutionReports

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Market data feeds

Snapshot (35=W) and incremental (35=X) streams are available through FIX, aligned with exchange state

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Real-time access

Access to balances, trades, and balances, positions, deposits and withdrawals. Account-level data is exposed via FIX

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Monitoring and auto-recovery

Sessions are managed automatically, with heartbeat tracking, reconnect logic, and sequence handling included

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Symbol and asset normalization

All symbols are mapped into a unified format across venues – no need to maintain custom naming logic for each exchange

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Sub-ms software-added latency

End-to-end FIX processing adds under 100 microseconds; latency is measured, monitored, and stable

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Available across 30+ exchanges

Standardized FIX sessions work consistently across 30+ exchanges, with routing logic unified for all venues

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Onboarding SLA: under 48 hours

Production sessions can be live in two business days or less, with credentials, configuration, and support included

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Support from FIX-native engineers

Integration, troubleshooting, and ongoing ops are handled by engineers with hands-on protocol experience — not support agents.

Built For Real-Life Workflows

Use Cases

From market makers to OMS teams and platforms — these are the most common ways trading firms integrate with our FIX API for OKX

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Market Making

Quote and hedge with sub-35ms software-added latency and full FIX execution control

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Order Routing from OMS

Send and track OKX orders directly from your trading system via FIX, with full lifecycle visibility

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Cross-Venue Arbitrage

Run arbitrage strategies across OKX, Binance, and others with unified FIX schema

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Platforms Offering FIX Access to Clients

Expose FIX connectivity to end-users — we handle routing, normalization, and stability

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Position and Balance Sync via FIX

Track positions and balances in real time with FIX-based account sync — aligned with live trading state across venues

Solution

FIX Messages

We provide a rich set of FIX messages to manage orders (NewOrderSingle, OrderCancelRequest), receive updates on balances and positions changes, and subscribe to real-time normalized market data from OKX

NewOrderSingle

Request to place SELL LIMIT order of 50 ALGO/USDC at 0.4

OrderCancelRequest

Request to cancel previously open order

MarketDataRequest

Request to subscribe to real-time L2 updates + trades on BTC/USDC

MarketDataIncrementalRefresh

One book level is added, another — deleted

TagTag descriptionValueValue description
8
BeginString
FIX.4.4
9
BodyLength
163
35
MsgType
D ORDER SINGLE
49
SenderCompID
LATENCY
56
TargetCompID
AXON-ORD-TY8-1
34
MsgSeqNum
6
52
SendingTime
20250130-22:42:50.900
11
CIOrdID
108
1
Account
528
21
HandlInst
1 AUTOMATED EXECUTION ORDER PRIVATE
100
ExDestination
OKEX
55
Symbol
ALGO/USDT
460
Product
4 CURRENCY
54
Side
2 SELL
60
TransactTime
20250130-22:42:50.894
38
OrderQty
50
40
OrdType
2 LIMIT
44
Price
0.4
59
TimeInForce
1 GOOD TILL CANCEL
10
CheckSum
212

Want FIX Access to OKX?

Start trading on OKX via FIX without building your own gateway Production sessions go live in 48 hours or less

Built-In Engineering Workarounds

Technical Highlights

From routing and permissions to data layout and metadata — every detail is optimized to simplify integration, increase consistency, and support complex trading setups at scale

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Dedicated session types for trading and market data

Market data and trading activity are handled through separate FIX sessions, reducing load and simplifying flow management

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ACL-based routing and permission control

Fine-grained access control over which accounts can trade where — useful for platforms and broker models

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Snapshot-then-incremental market data flow

Each session begins with a full book snapshot (35=W), followed by incremental updates (35=X)

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REST Management API for account-level admin tasks

Non-trading operations (e.g., creating accounts, assigning venues) are handled via REST, separate from FIX sessions

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Optimized MarketDataIncrementalRefresh layout

Key fields like Symbol (55) and SecurityExchange (207) are promoted outside of NoMDEntries, simplifying parsing and eliminating redundancy

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Real-time session status via 35=h / 35=g

Systems can subscribe to session status messages and react to changes — no need for polling or manual monitoring.

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Exchange instruments come with precision metadata

SecurityList (35=y) responses include price precision, min quantity, and lot size — enabling pre-validation and proper formatting

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Extensive reference dictionaries

Unified definitions for security types, order types, time-in-force, and other enums ensure schema stability and forward compatibility

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Multi-account: Organizations → Accounts → Logins

Flexible identity model allows firms to manage multiple accounts and logins under one org — ideal for segmented operations

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Transparent maintenance windows

Planned downtime windows (typically <10 minutes) are announced in advance, helping teams schedule around them with confidence

How it works

Downloads

Access our trading and market data raw FIX logs to gain hands-on experience with Axon Trade OEMS functionalities.

8=FIX.4.4|9=107|35=A|49=LATENCY|56=AXON-ORD-TY8-1|34=1|52=20250130-22:42:25.300|98=0|108=30|141=Y|553=*******|554=******|10=171|

8=FIX.4.4|9=82|35=A|49=AXON-ORD-TY8-1|56=LATENCY|34=1|52=20250130-22:42:25.864|98=0|108=30|141=Y|10=245|

8=FIX.4.4|9=88|35=g|49=LATENCY|56=AXON-ORD-TY8-1|34=2|52=20250130-22:42:25.984|335=1738276945983|263=1|10=122|

8=FIX.4.4|9=98|35=AF|49=LATENCY|56=AXON-ORD-TY8-1|34=3|52=20250130-22:42:26.003|584=2|585=8|453=1|448=528|452=11|10=220|

8=FIX.4.4|9=179|35=h|49=AXON-ORD-TY8-1|56=LATENCY|34=2|52=20250130-22:42:26.091|335=1738276945983|336=BYBIT|625=543|325=N|340=2|453=1|448=AXON ID|447=D|452=24|802=2|523=543|803=10|523=TY8|803=22|10=110|

8=FIX.4.4|9=178|35=h|49=AXON-ORD-TY8-1|56=LATENCY|34=3|52=20250130-22:42:26.091|335=1738276945983|336=OKEX|625=543|325=N|340=2|453=1|448=AXON ID|447=D|452=24|802=2|523=543|803=10|523=TY8|803=22|10=043|

8=FIX.4.4|9=133|35=8|49=AXON-ORD-TY8-1|56=LATENCY|34=4|52=20250130-22:42:26.109|37=N/A|11=N/A|584=2|911=0|912=Y|150=I|39=3|58=No active orders found|10=201|

8=FIX.4.4|9=171|35=AN|49=LATENCY|56=AXON-ORD-TY8-1|34=4|52=20250130-22:42:26.235|710=4|724=0|263=0|453=1|448=528|452=11|1=1|581=1|715=2025-01-30T22:42:26.233Z|60=2025-01-30T22:42:26.233Z|10=055|

8=FIX.4.4|9=132|35=AO|49=AXON-ORD-TY8-1|56=LATENCY|34=5|52=20250130-22:42:26.342|721=4|710=4|727=2|325=N|728=0|729=0|453=1|448=528|452=11|1=1|581=1|10=001|

8=FIX.4.4|9=240|35=AP|49=AXON-ORD-TY8-1|56=LATENCY|34=6|52=20250130-22:42:26.342|721=1047481|710=4|727=2|325=N|728=0|715=20250130-22:32:24.059|453=2|448=528|452=11|448=BYBIT|447=D|452=22|1=1|660=99|581=1|55=USDT|167=CRYPTOSPOT|702=1|703=ETR|705=0.02423465|10=183|

8=FIX.4.4|9=230|35=AP|49=AXON-ORD-TY8-1|56=LATENCY|34=7|52=20250130-22:42:26.342|721=1047487|710=4|727=2|325=N|728=0|715=20250130-22:32:24.059|453=2|448=528|452=11|448=BYBIT|447=D|452=22|1=1|660=99|581=1|55=ADA|167=CRYPTOSPOT|702=1|703=ETR|704=6|10=128|

8=FIX.4.4|9=171|35=AN|49=LATENCY|56=AXON-ORD-TY8-1|34=5|52=20250130-22:42:26.464|710=5|724=0|263=1|453=1|448=528|452=11|1=1|581=1|715=2025-01-30T22:42:26.464Z|60=2025-01-30T22:42:26.464Z|10=074|

8=FIX.4.4|9=132|35=AO|49=AXON-ORD-TY8-1|56=LATENCY|34=8|52=20250130-22:42:26.572|721=5|710=5|727=2|325=N|728=0|729=0|453=1|448=528|452=11|1=1|581=1|10=011|

Trading sample

Download raw FIX log illustrating basic conceptions of interaction with Axon Trade OEMS

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Get balances

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Place, replace, and cancel an order

8=FIX.4.4|9=113|35=A|49=DEVIATION-1|56=AXON-MD-TY8-1|34=1|52=20250130-21:27:08.257|98=0|108=30|141=Y|553=*****|554=*********|10=048|

8=FIX.4.4|9=85|35=A|49=AXON-MD-TY8-1|56=DEVIATION-1|34=1|52=20250130-21:27:08.586|98=0|108=30|141=Y|10=153|

8=FIX.4.4|9=67|35=0|49=DEVIATION-1|56=AXON-MD-TY8-1|34=2|52=20250130-21:27:38.259|10=067|

8=FIX.4.4|9=67|35=0|49=AXON-MD-TY8-1|56=DEVIATION-1|34=2|52=20250130-21:27:38.587|10=071|

8=FIX.4.4|9=163|35=V|49=DEVIATION-1|56=AXON-MD-TY8-1|34=3|52=20250130-21:27:55.773|262=1|263=1|264=0|265=1|267=3|269=0|269=1|269=2|146=2|55=BTC/USDC|207=OKEX|55=ETH/USDC|207=OKEX|10=237|

8=FIX.4.4|9=51314|35=W|49=AXON-MD-TY8-1|56=DEVIATION-1|34=3|52=20250130-21:27:55.989|262=1|55=BTC/USDC|207=OKEX|268=800|269=0|270=105087.9|271=0.05710245|272=20250130|273=21:27:55.341|269=0|270=105084.0|271=0.01140000|272=20250130|273=21:27:55.341|269=0|270=105082.4|271=0.00997314|272=20250130|273=21:27:55.341|269=0|270=105082.1|271=0.01884000|272=20250130|273=21:27:55.341|269=0|270=105082.0|271=0.01140000|272=20250130|273=21:27:55.341|269=0|270=105080.4|271=0.02000000|272=20250130|273=21:27:55.341|269=0|270=105078.3|271=0.02000000|272=20250130|273=21:27:55.341|269=0|270=105078.0|271=0.01140000|272=20250130|273=21:27:55.341|269=0|270=105077.4|271=0.03427144|272=20250130|273=21:27:55.341|269=0|270=105077.3|271=0.05060000|272=20250130|273=21:27:55.341|269=0|270=105076.5|271=0.00001501|272=20250130|273=21:27:55.341|269=0|270=105076.2|271=0.05000000|272=20250130|273=21:27:55.341|269=0|270=105076.0|271=0.01140000|272=20250130|273=21:27:55.341|269=0|270=105074.0|271=0.01140000|272=20250130|273=21:27:55.341|269=0|270=105072.1|271=0.08214495|272=20250130|273=21:27:55.341|269=0|270=105072.0|271=0.01140000|272=20250130|273=21:27:55.341|269=0|270=105070.9|271=0.01919945|272=20250130|273=21:27:55.341|269=0|270=105070.8|271=0.23639000|272=20250130|273=21:27:55.341|269=0|270=105070.0|271=0.01140000|272=20250130|273=21:27:55.341|269=0|270=105067.2|271=0.00997314|272=20250130|273=21:27:55.341|269=0|270=105067.1|271=0.04528938|272=20250130|273=21:27:55.341|269=0|270=105066.8|271=0.00929399|272=20250130|273=21:27:55.341|269=0|270=105066.2|271=0.09517804|272=20250130|273=21:27:55.341|269=0|270=105066.0|271=0.00001500|272=20250130|273=21:27:55.341|269=0|270=105064.8|271=0.00951000|272=20250130|273=21:27:55.341|269=0|270=105063.1|271=0.05060000|272=20250130|273=21:27:55.341|269=0|270=105059.4|271=0.10000000|272=20250130|273=21:27:55.341|269=0|270=105059.1|271=0.01921869|272=20250130|273=21:27:55.341|269=0|270=105058.2|271=0.01919945|272=20250130|273=21:27:55.341|269=0|270=105056.6|271=0.10941272|272=20250130|273=21:27:55.341|269=0|270=105056.5|271=0.25587000|272=20250130|273=21:27:55.341|269=0|270=105055.5|271=0.00001501|272=20250130|273=21:27:55.341|269=0|270=105054.2|271=0.00882407|272=20250130|273=21:27:55.341|269=0|270=105051.4

Market data sample

Download raw FIX log illustrating standard market data processing workflow

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Subscribe on multiple symbols

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Receive books snapshots

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Receive incremental books updates

What infractructure we use

Our data centers

Axon Trade servers are located in Equinix data centers in New Jersey (NY4), London (LD4), and Tokyo (TY8), and we offer cross-connection in all locations. You also can co-locate in our NY4 cabinet where we provide fully managed services.

NY4

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LD4

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TY8

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Want FIX Access to OKX?

Start trading on OKX via FIX without building your own gateway Production sessions go live in 48 hours or less

Related resources

Additional info

Check FIX API documentation and code samples, and find out more about how you can benefit from trading on OKX using Axon Trade services in our articles

FAQ`s

Frequently Asked Questions

What is Axon Trade?
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Axon Trade is an institutional-grade OEMS for digital asset trading. We provide a unique combination of services such as FIX API for digital asset trading, real-time normalized market data feeds, low-latency execution services, and a secure environment.

What is the OEMS for crypto trading?
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Do you serve individual retail traders or work only with institutional clients?
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How does FIX API help with trading?
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How does integration work?
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What are the bandwidth requirements?
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How can I connect to your services?
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Do you have demo environment?
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