Brokers
Horizon × Alpaca
Alpaca is a commission-free trading platform that lets you trade US stocks and ETFs through a powerful API. It is built for developers, algo traders, and automated strategy execution — a natural fit for deploying Horizon strategies live.
- US Stocks
- ETFs
- Options
- Crypto
- Authentication
- API Key
- Website
- alpaca.markets
Alpaca
Commission-free, API-first US brokerage for stocks, ETFs, options, and crypto.
How it works
- Connect your Alpaca account using API credentials
- Authorize access securely
- Start executing strategies directly from Horizon
- Monitor trades and performance in real time
Connect steps
- 1Go to your Alpaca dashboard
- 2Generate your API Key & Secret
- 3Paste credentials into Horizon
- 4Click "Connect Broker"
- 5Verify connection status
Capabilities
- API Key
- API Secret
- Environment
- Paper Trading
- Live Trading
Frequently asked questions
- Does Alpaca have a developer API?
- Yes. Alpaca provides a robust, publicly available developer API that lets you programmatically access brokerage services, including trading stocks and ETFs. Horizon uses this API to power the Alpaca integration.
- Does the Alpaca API support trading?
- Yes. This integration offers full trading capabilities, letting you execute trades, automate portfolio management, and run algorithmic strategies on Alpaca's commission-free infrastructure.
- How can I remove my account from an app?
- You can disconnect your account at any time directly within Horizon or from your Alpaca account settings.
