Alpaca

Commission-free API-first broker built for algorithmic trading

Alpaca is a commission-free, API-first brokerage designed specifically for algorithmic and automated trading. With real-time market data, paper trading, and fractional shares, it is the most popular broker for trading bots and AI-powered systems like Tradewink.

Commissions

Free (stocks & ETFs)

Min Deposit

$0

API Type

REST + WebSocket

Paper Trading

Yes

Supported Assets

US StocksETFsCrypto (via Alpaca Crypto)

Key Features

  • Commission-free stock and ETF trading
  • Real-time WebSocket market data streams
  • Paper trading environment for testing
  • Fractional shares (as small as $1)
  • Extended hours trading support
  • OAuth2 authentication for secure third-party connections

How Tradewink Connects to Alpaca

  • OAuth2 connection — no API keys to copy/paste
  • Real-time position and order monitoring via WebSocket
  • Fractional share support for micro accounts under $1,000
  • Paper mode toggle for risk-free strategy testing
  • Automatic PDT rule tracking and enforcement

Pros

  • Best API documentation in the industry
  • True commission-free trading
  • Paper trading mode for testing
  • Fractional shares down to $1
  • Real-time WebSocket streaming

Cons

  • No options trading (stocks and crypto only)
  • US markets only
  • Crypto selection limited to major coins

Frequently Asked Questions

Is Alpaca free for algorithmic trading?

Yes. Alpaca offers commission-free trading for stocks, ETFs, and crypto. There are no monthly fees for API access. Market data is included for free with a funded account.

Can I use Alpaca with Tradewink?

Yes. Tradewink connects to Alpaca via OAuth2. Click "Connect Broker" in your dashboard, select Alpaca, and authorize the connection. No API keys needed.

Does Alpaca support paper trading?

Yes. Alpaca has a full paper trading environment that mirrors the live API. Tradewink can toggle between paper and live mode per-user.

Start trading with Alpaca + Tradewink

Connect your Alpaca account and let AI handle the analysis, sizing, and execution.

Get Started FreeOpen Alpaca Account

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