CCXT is a cryptocurrency exchange trading library that provides a unified API for over 100 exchanges across 7 programming languages (TypeScript/JavaScript, Python, PHP, C#, Go, Java). The core is written in TypeScript from which all other language bindings are transpiled. It implements both REST and WebSocket APIs for market data, trading, and account management. The library normalizes exchange-specific data formats into a common schema, enabling cross-exchange arbitrage and analytics. Key architectural patterns include a base Exchange class with exchange-specific subclasses, a pro/ subdirectory for WebSocket-enabled exchanges, static_dependencies/ for vendored third-party code (ethers, starknet, bip39, etc.), and an extensive test suite with both static and live tests. The repository includes a playground (Next.js web IDE), CLI tool, documentation site (Fumadocs), CI/CD for all languages, and Docker development environment.
This repository is a comprehensive .NET SDK for the Alpaca Markets API, providing both REST and WebSocket clients for algorithmic trading, market data retrieval (stocks, crypto, options), and account management. The architecture is a layered client library with core (`Alpaca.Markets`) and extensions (`Alpaca.Markets.Extensions`) NuGet packages, targeting multiple .NET frameworks (netstandard2.0/2.1, net462, net8.0, net10.0). Entry points include configuration classes that instantiate typed clients (e.g., `IAlpacaTradingClient`, `IAlpacaDataClient`, `IAlpacaCryptoDataClient`, `IAlpacaOptionsDataClient`) via environment-specific base URLs (live, paper). The library supports advanced order types (bracket, OCO, trailing stop), real-time streaming with automatic reconnection, and efficient pagination using `IAsyncEnumerable`. The codebase exhibits high craftsmanship with clean separation of interfaces, messages, and parameters; fluent builder patterns for orders; and robust testing infrastructure using mocks. The extensions package adds DI integration (`AddAlpaca*Client`), Polly-based retry, and reusable subscription management. While the SDK is actively maintained and well-tested, it relies on Newtonsoft.Json (rather than System.Text.Json) and maintains compatibility with older frameworks, adding complexity. A minor risk is dependency on internal Alpaca API endpoints that could change, but the library's design isolates these concerns.
This repository is the official documentation for the Binance Spot Exchange APIs. It provides comprehensive specifications for REST, WebSocket, FIX, and SBE (Simple Binary Encoding) protocols, covering trading, market data, account management, and user data streams. The documentation includes detailed endpoint references, authentication methods (HMAC, RSA, Ed25519), order types, filters, error codes, and FAQs. It also contains versioned SBE XML schemas for code generation and lifecycle management JSON files. While not an application itself, it serves as the authoritative reference for developers building trading bots, market-making systems, and integration tools for Binance Spot. The repository is well-structured with bilingual (English/Chinese) support and separate documentation for production, testnet, and demo environments.