Alpaca
Developer-first API for Stock, Options, Crypto Trading

Alpaca provides a developer-first brokerage API platform enabling algorithmic traders, fintech startups, and institutions to trade stocks, options, and crypto programmatically. It offers a Trading API for individual algo traders and a Broker API for businesses looking to embed investing into their own products. The platform is self-clearing, commission-free for retail users, and supports features like market data, paper trading, margin, and multi-leg options.
Alpaca provides REST and FIX APIs backed by its own clearing infrastructure, allowing developers to execute trades, access market data, and embed brokerage services programmatically with SDKs in multiple languages.
Developers, algorithmic traders, quant funds, and fintech companies building investment products
Background.
- Status
- launched
- Business model
- freemium
- Company
- AlpacaDB, Inc.
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