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Alpaca

stocksoptionscrypto API key

API-first broker covering stocks, options and spot crypto.

Alpaca was built API-first, which makes it one of the smoothest connections to automate. Commission-free equities, fractional share support, and a genuine real-time paper environment for testing.

Good to know

Complex orders (bracket, OTO, OCO) are not available on Alpaca's crypto or options products — those fall back to simple orders. Fractional orders must be day market orders and cannot be shorted.