Alpaca Crypto API

Blockchain · Trading

Alpaca is a US-regulated broker-dealer that provides commission-free trading APIs for both US stocks and cryptocurrencies through a unified REST and WebSocket interface. Alpaca's business model is built around empowering fintech developers and algorithmic traders with brokerage infrastructure — meaning the API is first-class and well-maintained, not a secondary feature of a retail trading platform. Alpaca is a popular choice for US-based developers building trading applications, robo-advisors, and algorithmic trading bots that require a regulated brokerage API.

free

API Key + Secret

200 req/min for data; standard limits for trading endpoints

✓ Available

Best For

US-based developers building commission-free crypto trading apps and algorithmic trading bots using a broker-dealer API that also covers US stocks and ETFs.

Pricing

Alpaca is a US-regulated broker-dealer. Crypto and stock trading available. Nigerian users cannot open Alpaca accounts — service restricted to eligible countries (primarily US). ng_support=false.

Key Highlights

  • Commission-free crypto trading
  • US-regulated broker-dealer
  • Stocks + crypto in one API
  • Paper trading (simulation) free
  • REST + WebSocket APIs
  • 25+ crypto pairs
  • Market, limit & stop orders
  • SIPC-insured (for equities)

Required Access Documents

  • Alpaca AccountRequired
    US residents and select countries only. Nigerian users cannot register. Paper trading accounts available for testing the API.
  • API Key + SecretRequired
    Generated in Alpaca dashboard. Used as header credentials: APCA-API-KEY-ID and APCA-API-SECRET-KEY.

Use Cases

  • Commission-free Crypto Bot for US Market:Developers building automated crypto trading strategies for US users can use Alpaca's zero-commission API to execute BTC, ETH, and altcoin trades without per-trade fees eating into returns — particularly valuable for high-frequency or small-size systematic strategies.
  • Multi-asset Portfolio (Stocks + Crypto) for US Investors:US-focused fintech apps can use Alpaca's unified API to manage portfolios combining US equities and crypto assets in a single interface — enabling a true multi-asset brokerage experience through one API integration.
  • Paper Trading Bot for Strategy Backtesting:Developers anywhere (including Nigeria, for testing purposes) can use Alpaca's free paper trading environment to simulate trading strategies against real market data without financial risk — a valuable tool for validating algorithmic trading logic before committing real capital.

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