mt5api

MetaTrader 5 REST API

mt5api exposes MT5 market data, account info, trading history, and trading operations over HTTP. It uses the pdmt5 client internally and adds optional API-key auth and JSON/Parquet response formatting.

The API server must run on Windows. The MetaTrader5 Python package used by pdmt5 is supported only on Windows, so you must host mt5api on a Windows machine with a logged-in MetaTrader 5 terminal. HTTP clients can connect from any operating system.

Architecture

graph TB
    Client["HTTP Client<br/>(Any OS)"]

    subgraph "Windows Host"
        subgraph "FastAPI Application"
            Middleware["Middleware Stack<br/>Logging · Error Handler"]
            Routers["Routers<br/>health · symbols · market · account · history · calc · trading"]
            Auth["API Key Security Dependency<br/>Security(api_key_header) · verify_api_key"]
            Deps["FastAPI Dependencies<br/>MT5 Client Singleton · Format Negotiation"]
            Formatters["Response Formatters<br/>JSON · Parquet"]
            Middleware --> Routers --> Deps --> Formatters
            Auth -.-> Routers
            Formatters --> Middleware
        end

        Deps --> pdmt5["pdmt5<br/>MT5 Client Library"]
        pdmt5 --> MT5["MetaTrader 5<br/>Terminal"]
    end

    Client -- "HTTP/REST" --> Middleware
    Middleware -- "JSON / Parquet" --> Client

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Features

• REST endpoints for symbols, market data, account info, orders, history, calculations, and trading operations
• JSON and Apache Parquet responses (content negotiation)
• Optional API key authentication
• Structured JSON logging
• OpenAPI/Swagger docs built into the API

Requirements

• Python 3.11+
• Windows host with MetaTrader 5 terminal installed and logged in
• Linux and macOS are not supported for the API server runtime, but they work for HTTP clients

Installation

Install and run the API on the Windows machine where MetaTrader 5 is installed.

git clone https://github.com/dceoy/mt5api.git
cd mt5api
uv sync

Running the API on Windows

$env:MT5API_SECRET_KEY = "your-secret-api-key"  # Optional: omit to disable auth
$env:MT5API_ROUTER_PREFIX = "/api/v1"     # Optional: omit for root-level routes
uv run uvicorn mt5api.main:app --host 0.0.0.0 --port 8000

Docs:

• Swagger UI: http://localhost:8000/docs
• OpenAPI JSON: http://localhost:8000/openapi.json

Set MT5API_ROUTER_PREFIX to mount the API endpoints under a shared path such as /api/v1. The default is "", which keeps routes like /health and /symbols at the root. "/api/v1", "api/v1", and "/api/v1/" are treated the same.

Set MT5API_MAX_MARKET_BOOK_SUBSCRIPTIONS to cap active market-book subscriptions. The default limit is 100.

Example Requests with curl

Replace windows-host with the DNS name or IP address of the Windows machine running mt5api. If you run the request on that Windows host, localhost also works. In PowerShell, use curl.exe if curl resolves to Invoke-WebRequest.

curl "http://windows-host:8000/health"

# Include X-API-Key only when MT5API_SECRET_KEY is configured on the server.
curl -H "X-API-Key: your-secret-api-key" "http://windows-host:8000/symbols?group=*USD*"

curl -H "X-API-Key: your-secret-api-key" -H "Accept: application/parquet" "http://windows-host:8000/rates/from?symbol=EURUSD&timeframe=TIMEFRAME_M1&date_from=2024-01-01T00:00:00Z&count=100"

Market-data and calculation endpoints accept MetaTrader 5 constants either by official name (TIMEFRAME_M1, COPY_TICKS_ALL, ORDER_TYPE_BUY) or by their integer value.

Endpoints

If MT5API_ROUTER_PREFIX is set, prepend that value to every API route below.

Read-Only Endpoints

• Health: GET /health, GET /version, GET /last-error
• Symbols: GET /symbols, GET /symbols/total, GET /symbols/{symbol}, GET /symbols/{symbol}/tick
• Market data: GET /rates/from, GET /rates/from-pos, GET /rates/range, GET /ticks/from, GET /ticks/range, GET /market-book/{symbol}
• Calculations: GET /calc/margin, GET /calc/profit
• Account: GET /account, GET /terminal
• Trading state: GET /positions, GET /positions/total, GET /orders, GET /orders/total
• History: GET /history/orders, GET /history/orders/total, GET /history/deals, GET /history/deals/total

Operational Endpoints

• POST /symbols/{symbol}/select — Show or hide symbol in MarketWatch
• POST /market-book/{symbol}/subscribe — Subscribe to DOM events
• POST /market-book/{symbol}/unsubscribe — Unsubscribe from DOM events
• POST /order/check — Validate a trade request without execution

License

MIT License - see LICENSE.