BASIC DEVELOPMENT
Your specification is final. We implement, test for correctness and deliver.
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CUSTOM EA DEVELOPMENT
YOUR STRATEGY. BUILT INTO CODE.
Research-driven MT4 / MT5 Expert Advisor development — from a one-line idea or an existing EA to a validated system.
We do not stop at coding. We test the logic.
Any developer can turn a description into an EA. TYO builds it and then puts it through the same evidence pipeline used for its own systems: backtest, out-of-sample, walk-forward, Monte Carlo, shadow forward.
You receive code and the evidence about that code — including the honest result when a logic does not hold.
01
What we build
MetaTrader 4 and 5. Strategy code, infrastructure around it, and research tooling.
- Original EA From your rules to a working system
- EA modification Filters, risk, exits, fixes
- MT4 → MT5 Migration with behaviour checks
- Indicators Custom MQL4 / MQL5 indicators
- Risk systems Position sizing, daily limits, basket control
- Portfolio tools Multi-strategy allocation and monitoring
- Dashboards On-chart and external monitoring
- Backtest automation Batch runs, report parsing, metrics
- AI × MT5 Model-assisted research and monitoring
- MCP integration Read-only AI tooling over your terminal data
02
Development types
Scope is chosen together; each type is quoted on its requirements.
RESEARCH DEVELOPMENT
Logic research included: we examine the idea, propose variants and report what holds on development data.
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ADVANCED QUANT DEVELOPMENT
Full validation: OOS, walk-forward, Monte Carlo and shadow forward under the Evidence-by-Design protocol.
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AI TRADING SYSTEM
AI / MCP / data-pipeline systems around MT5 — research assistants, monitoring, reporting.
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Prices depend on requirements and are quoted per project. No fixed price list is published.
03
Research process
Seven steps for every build; the advanced track adds the validation engines from TYO LAB.
Standard flow
- 01Consultation
- 02Strategy design
- 03Specification
- 04Development
- 05Backtest
- 06Revision
- 07Delivery
Advanced validation (optional)
- 01Research
- 02Out-of-sample
- 03Walk-forward
- 04Monte Carlo
- 05Shadow forward
The same engines and rules documented on the Research page — including a sealed holdout the developer cannot touch.
04
Tech stack
Only what is used in this lab today.
05
I already have an EA
Modification and migration requests are welcome — with or without source code.
- Add SL / TP logic
- Add martingale control or removal
- Add a trend filter
- Convert MT4 to MT5
- Add a session filter
- Add a news filter
- Add portfolio control
- Add AI monitoring
06
Case studies
Only real, published research counts as a case study here.
No client case studies are published. TYO's own research log — including experiments that failed their targets — is the reference for how work is done.
07
Development FAQ
MT4 or MT5?
Both. New systems are built for MT5 by default; MT4 and MT4→MT5 migration are supported.
Can you modify an existing EA?
Yes, with .mq4 / .mq5 source. Without source, rebuilding from a specification is usually the realistic path — we will say so up front.
Is it possible without source code?
An .ex4 / .ex5 cannot be edited. We can re-implement from your description and verify behaviour against the original in the tester.
What do I receive?
Compiled EA, set files, documentation and — depending on the agreed scope — source code and the validation reports.
Is backtesting included?
Correctness testing is always included. Research-grade validation (OOS / walk-forward / Monte Carlo / shadow forward) is the advanced track.
Confidentiality, ownership, rights?
NDA can be agreed before details are shared. Source ownership, commercial rights and redistribution rights are defined in the contract for each project.
08
Request a quote
Tell us what you want to build. Budget and deadline are optional; they help us propose the right scope.
File upload (source code, specifications) becomes available once the inquiry backend is live. Until then describe the EA in the message.