The Alpaca API is a modern, cloud-based trading API that allows developers to build and deploy algorithmic trading bots for stocks and ETFs.
Feature Description Commission-Free Trading Trade stocks and ETFs with $0 commission on U.S. exchanges. Paper Trading Simulate trades in a virtual environment using fake money. Great for testing. Real-Time Market Data Access to real-time stock quotes, bar data, and last trade info. REST API For placing orders, managing positions, retrieving account data. WebSocket Streaming For receiving live updates on quotes, trades, and account changes. OAuth Support Enables secure access to accounts via third-party applications. Broker API Allows you to offer your own brokerage service (white-label).
API Components 1. Market Data API • Endpoints for real-time and historical data (bars, trades, quotes) • Supports multiple data resolutions (minute, daily, etc.) 2. Trading API • Submit, modify, or cancel orders • Monitor positions and portfolios • Manage account and get performance metrics 3. Streaming API • Subscribe to real-time market and account events (via WebSockets) 4. Broker API (For businesses) • Onboard clients, manage accounts, and process orders at scale
The Alpaca API is a modern, cloud-based trading API that allows developers to build and deploy algorithmic trading bots for stocks and ETFs. It’s designed to be easy to integrate, offering both REST and WebSocket endpoints.
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