Alpaca
Commission-free stock and crypto trading API with free paper trading.
Free plan, paid from $99/moExecuting orders from a bot
Paper trading and Basic market data (IEX) are free; Algo Trader Plus data $99/mo. Checked 2026-10-14.
Quick start
Sign up, open the paper account and set APCA_API_BASE_URL=https://paper-api.alpaca.markets.
Good and not so good
- Free paper account with $100k simulated balance
- Same API for paper and live
- Free data is IEX-only
Use cases with Alpaca
No use cases yet. Add an agent use case.
Suggested in setups
MoneyX · @EverydayAi10
Test an AI agent on a small investing account
Let an AI agent trade a small Robinhood account isolated from his other accounts.
$12.95/mo to start2-4 hoursBeginner