For anyone automating trades, the broker isn't just where the account lives — its API is the execution layer your system runs on. Two of the most popular API-first brokers are Alpaca and Tradier, and while both are developer-friendly, they fit different roles in an options workflow.

Alpaca: great paper, developer-first

Alpaca built its reputation on a clean, modern API and an excellent paper-trading environment — ideal for building and validating a system without risking capital. Its options support has grown, but many developers use Alpaca primarily as the sandbox: a frictionless place to run the same code against a simulated account before going live.

Tradier: options-focused live execution

Tradier is built around options trading, with an API designed for live options order flow and competitive pricing for active traders. For a system that trades short-dated SPY options for real, Tradier's options-first execution is a natural fit for the live side.

Alpaca is where you prove the system. Tradier is where you run it live. Different jobs, both essential.

Using both

The strongest setup often uses both: Alpaca for a realistic paper environment, Tradier for live options execution — the same strategy code running against each. That's close to how NoVo is wired: it takes its real-time data feed from Tradier or tastytrade (at least one), trades live options through Tradier, and runs paper mode on Alpaca, so the logic you test is the logic that goes live. And because it's non-custodial, you connect your own broker keys — NoVo never holds your money.