Binance Local Exchange

🏦 What is "BLE" or "Binance Local Exchange"

You can interact with BLE as if you would be trading with the real Binance API without taking the risk of making an actual trade. All orders calls will be saved in memory (as long as the server is running) and will be internally matched once the price on Binance hits the expected target. In case of a MARKET order the order will be settled at the current market price on Binance.

Once the order is settled an ExecutionReport is emitted according to the interface of the Binance API. Note that BLE is not 100% local, some endpoints are (always) proxied to Binance. For example kline events will always be proxied to Binance so that BLE can correctly match the orders internally.

Quick start

• npx binance-local-exchange
• Make api calls or point your trading bot to: http://localhost:8000

Help, it's not working?

• I can't create an order: make sure to call GET /api/v3/exchangeInfo. (why?)
• I am not receiving any executionReports:
  • make sure to call POST /api/v3/userDataStream. (why?)
  • make sure to listen for Kline/Candlestick Streams. (why?)

Still not working? Please open a bug report

⚙️ Configuration

The following configuration options can be configured either by argument or by environment variable.

Option	Env var	Description
-V, --version		output the version number
-p, --port	PORT	port number (default: 8000)
-lt, --local-time	LOCAL_TIME	local time (default: true)
-lei, --local-exchange-info	LOCAL_EXCHANGE_INFO	local exchange info (default: true)
-fm, --fee-maker	FEES_MAKER	maker fee (default: 0.001)
-ft, --fee-taker	FEES_TAKER	taker fee (default: 0.001)
--I-KNOW-WHAT-I-AM-DOING	I_KNOW_WHAT_I_AM_DOING	removes all security warnings
-h, --help		display help for command

For example: export PORT=8001 && npx binance-local-exchange or npx binance-local-exchange -p 8001

🪝 API endpoints

Method	Path	Implemented
GET	/api/v3/exchangeInfo	✅
POST	/api/v3/order	✅
GET	/api/v3/time	✅
POST	/api/v3/userDataStream	✅

Websocket streams

Stream	Implemented
kline	✅
userDataStream	✅

Internal server endpoints

Can be used to debug or get more information about the internal state of the server

Method	Path	Implemented	Body / Query	Info
GET	/server/debug	✅		Returns the state of the internal stores
GET	/server/config	✅		Returns the configuration that is used by the server
POST	/server/match	✅	{ symbol: string, price: number }	Tries to match open orders.

🗺️ Roadmap

• Add support for additional API endpoints
• Spot account trades
• Margin account trades
• ...

💁 How to contribute?

• Clone repo git clone https://github.com/SockTrader/Binance-local-exchange
• Install dependencies cd Binance-local-exchange && npm install
• Start server npm run start or in watch mode npm run watch
• Make code changes, test with Postman, create unit tests
• Open pull request

✨ Contributors

⚠️ DISCLAIMER

Use at your own risk. Neither SockTrader nor any project contributor can be held responsible for any potential losses.