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Connectivity

FIX and broker API integration, tested before it touches a live order

Order entry, market data and drop copy over FIX, plus the REST and WebSocket APIs most brokers and venues now offer. Built with simulators and replay so every message type is tested before certification, and monitored once it is live.

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connect.yourbroker.com/fixLiveFIX sessions4 of 4 connectedProduction Sessions reset 22:00 UTCSESSIONCOUNTERPARTYTYPESEQ IN / OUTLATENCYSTATUSORD-LPALiquidity provider AOrder entry18,204 / 18,1971.9 msLogged onMD-LPALiquidity provider AMarket data2,941,882 / 410.8 msLogged onORD-PBPrime brokerOrder entry6,410 / 6,4022.4 msLogged onDC-PBPrime brokerDrop copy9,113 / 12gap 9108-9112ResendingMessage logfilter: 11=ORD-2041*14:02:17.401OUTNewOrderSingle35=D 11=ORD-20417 55=EURUSD 54=1 38=200000 40=2 44=1.0879014:02:17.403INExecutionReport35=8 11=ORD-20417 150=0 39=0 151=20000014:02:17.408INExecutionReport35=8 11=ORD-20417 150=F 39=1 32=120000 31=1.0879014:02:17.415INExecutionReport35=8 11=ORD-20417 150=F 39=2 32=80000 31=1.0879114:02:18.020OUTOrderCancelRequest35=F 11=ORD-20418 41=ORD-20409 55=GBPUSD14:02:18.024INExecutionReport35=8 11=ORD-20418 150=4 39=414:02:30.000OUTHeartbeat35=0 34=1820414:02:31.112INResendRequest35=2 7=9108 16=9112 (DC-PB)14:02:31.140OUTExecutionReport35=8 43=Y 34=9108 11=ORD-20417 (resend)Order ORD-20417FilledSent14:02:17.401NewOrderSingle, 200,000Acknowledged+2 msOrder acceptedPartly filled+7 ms120,000 at 1.08790Filled+14 ms200,000, avg 1.087904Reconciled+13.7 sMatched with drop copyAverage fill1.087904Slippage vs limit0.0 pips

Illustrative screen built on synthetic data

Who it is for

Built for fix and broker api integration

Brokers adding liquidity or venues

Connecting a new liquidity provider, venue or prime broker to an existing platform or bridge.

Prop firms and startups

Connecting a dashboard, risk engine or trading app to a broker's API without breaking when the API changes.

Operations and finance teams

Drop copy and trade feeds into reconciliation, risk and reporting.

What you get

Features for both sides of the screen

01

What we connect

  • FIX order entryNew orders, amendments, cancels and execution reports, with session-level recovery.
  • FIX market dataSnapshots and incremental updates, normalised into one internal format.
  • Drop copyA copy of every execution for reconciliation and risk, independent of the trading path.
  • REST and WebSocket APIsBroker and venue APIs, wrapped so a change on their side means one adapter update on yours.

02

What we deliver

  • AdaptersOne adapter per counterparty, behind a common internal interface.
  • SimulatorsA counterparty simulator so every message, reject and edge case is tested without a live session.
  • Session monitoringHeartbeats, sequence gaps, rejects and latency on one screen, with alerts.
  • RunbooksWhat to do when a session drops at the open, written before it happens.

The order lifecycle

Every message has to be accounted for

One order produces several messages across several systems. Integration is the work of making sure none is lost, duplicated or misread.
  1. 1

    New order

    Your system records the order before sending it, so a crash cannot lose it.

  2. 2

    Acknowledged, filled or rejected

    Execution reports update the order's state. Partial fills, amendments and rejects each have their own path.

  3. 3

    Confirmed and reconciled

    Drop copy and end-of-day files are matched against your records, and any break is raised the same day.

Plain-English FIX

The parts of FIX that cause most incidents

Most FIX problems are not exotic. They are the same handful of issues, met at the worst possible moment.
Sequence numbers
Both sides count messages. A gap after a reconnect has to be resent or reset correctly, or orders go missing.
Execution report states
A fill can arrive before the acknowledgement, and a cancel can cross with a fill. The state machine has to allow for both.
Session schedules
Sessions start and end at fixed times. A daily reset in the wrong time zone is a classic Monday morning outage.
Custom tags
Every counterparty adds its own fields. They belong in the adapter, not scattered through your code.

Why AlchmAI

Why trading firms choose a specialist

Simulator first

Every message tested before certification.

One interface

Counterparties change without code changes.

Monitored

Gaps and rejects alerted, not discovered.

Front-office experience

Real-time state across bank trading apps.

Documented

Runbooks written before go-live.

Yours

Adapters and simulators handed over.

Selected work, uk investment bank, markets division

Six front-office trade capture and pricing applications on one configuration-driven ticket library

A prop firm dashboard, a broker's order ticket and an RFQ blotter are the same problem: fast, validated input that stays in sync with everything else. We have built it where the stakes were highest.

Read the case

6

applications on one shared ticket library

0

code changes to onboard a new product or field

15+

engineers working to the standards set at inception

How we engage

It starts with a two-week Platform Review

Every engagement starts with a two-week Platform Review. We take read-only access to your charts, data feeds and any AI feature, test them against what your clients actually see, and hand you a findings report, a costed plan and, where it helps, a working prototype. Fixed price, agreed before we start, and credited in full against a build that begins within 60 days. The report is yours whichever way you go.

  1. 1. Weeks 1 to 2

    Platform Review

    Read-only access. Findings report, costed plan and a prototype where it helps. You sign off the baseline we will measure against.

  2. 2. Weeks 3 to 8

    Build, in fortnightly releases

    Working software every two weeks on an environment you can use. Any AI wording is agreed with your compliance lead before a client sees it.

  3. 3. Go-live

    Evidenced release

    A runbook, an evidence file your compliance lead can read in one sitting, and an off switch for every AI feature.

  4. 4. Day 90

    Results check

    What changed, measured against the baseline you signed at the review.

Questions

FIX and broker API integration: common questions

Do you supply a FIX engine?

No. We work with the engine you have, or help you choose an open-source or commercial one, and build the adapters, tests and monitoring around it.

Can you handle certification with our counterparty?

We prepare and run the test scripts and work through certification alongside your team. The counterparty's own process and timetable apply.

Do you connect to retail broker APIs too?

Yes. REST and WebSocket APIs sit behind the same internal interface as FIX, so the rest of your system does not care which one it is talking to.

What about latency?

We measure it end to end and design for what your use case needs. A prop firm dashboard and a market-making strategy have very different requirements.

Related

Often built alongside

Brokers and CFD providers

Web terminals, mobile apps and back-office screens in your brand, on the back end you already run.

Learn more

Prop trading firms

Evaluation dashboards, tick-level rule engines, breach evidence and payout workflows.

Learn more

Trading education platforms

Chart lessons, practice on historical data and AI explanations that teach without tipping.

Learn more

Tell us which counterparty is next.

We will explain what the integration involves, what usually goes wrong and how we would test it.

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